Digital Clock Games: Minutes Earlier

Digital Clock Games: Minutes Earlier

Ages 5–7 · 5 minutes · Math

Play games that involve moving the time backward using minutes

This lesson is a game, where each round gives and time and asks what time it was some number of minutes earlier. If a student can read all the times on a digital clock and do basic subtraction, they are ready for this lesson.

Part of

Standards alignment

Common Core State Standards

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Alabama

  • MA19.3.18 — Tell and write time to the nearest minute; measure time intervals in minutes (within 90 minutes.)
  • MA19.1.14 — Given a two-digit number, mentally find 10 more or 10 less than the number without having to count, and explain the reasoning used.
  • MA19.2.23 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
  • MA19.2.23a — Express an understanding of common terms such as, but not limited to, _quarter past, half past_, and _quarter to._
  • MA19.3.18a — Solve real-world problems involving addition and subtraction of time intervals in minutes by representing the problem on a number line diagram.

Alaska

  • 3.MD.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes or hours (e.g., by representing the problem on a number line diagram or clock).
  • 1.CC.3 — Order numbers from 1-100. Demonstrate ability in counting forward and backward.
  • 1.NBT.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

Arizona

  • 3.MD.A.1a — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
  • 1.NBT.C.6 — Subtract multiples of 10 in the range of 10 to 90 (positive or zero differences), using objects or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. Relate the strategy to a written form.

Arkansas

  • 3.GM.11 — Solve word problems involving addition and subtraction of time intervals in minutes.
  • 1.NPV.1 — Count forward and back within 120 by ones and tens from any given whole number.
  • 1.NPV.6 — Use mental strategies to find 10 more or 10 less than a given two-digit number.
  • 2.GM.11 — Solve real-world problems involving addition and subtraction of time intervals in half hours or hours.

California

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m. Know relationships of time (e.g., minutes in an hour, days in a month, weeks in a year).
  • MP7 — Look for and make use of structure.

Colorado

  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Connecticut

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
  • MP7 — Look for and make use of structure.

Delaware

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

Florida

  • MA.3.M.2.1 — Using analog and digital clocks tell and write time to the nearest minute using a.m. and p.m. appropriately.
  • MA.3.M.2.2 — Solve one- and two-step real-world problems involving elapsed time.
  • MA.2.M.2.1 — Using analog and digital clocks, tell and write time to the nearest five minutes using a.m. and p.m. appropriately. Express portions of an hour using the fractional terms half an hour, half past, quarter of an hour, quarter after and quarter til.

Georgia

  • 1.NR.1.1 — Count within 120, forward and backward, starting at any number. In this range, read and write numerals and represent a number of objects with a written numeral.
  • 1.NR.5.2 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 2.MDR.6.1 — Tell and write time from analog and digital clocks to the nearest five minutes, and estimate and measure elapsed time using a timeline, to the hour or half hour on the hour or half hour.
  • 2.MDR.6 — Solve real-life problems involving time and money.

Hawaii

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Idaho

  • 3.MD.A.1 — Tell and write time to the nearest minute within the same hour and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes.
  • 1.NBT.C.5 — Given a two-digit number, mentally find ten more or ten less than the number, without having to count; explain the reasoning used.
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
  • 1.NBT.A.1 — Starting at a given number, count forward and backwards within 120 by ones. Skip count by twos to 20, by fives to 100, and by tens to 120. In this range, read and write numerals and represent a number of objects with a written numeral.

Illinois

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

Indiana

  • 3.M.3 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes (e.g., by representing the problem on a number line diagram). (E)
  • 1.M.2 — Tell and write time to the nearest half-hour and relate time to events (before/after, shorter/longer) using analog clocks. Explain how to read hours and minutes using digital clocks. (E)
  • 2.M.5 — Describe relationships of time, including seconds in a minute; minutes in an hour; hours in a day; days in a week; and days, weeks, and months in a year.
  • 2.CA.1 — Solve real-world problems involving addition and subtraction within 100 in situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all parts of the addition or subtraction problem (e.g., by using drawings and equations with a symbol for the unknown number to represent the problem). Use estimation to decide whether answers are reasonable in addition problems. (E)

Iowa

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes. For example, by representing the problem on a number line.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

Kansas

  • 3.MD.1 — Tell and write time to the nearest minute using a.m. and p.m. and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, (e.g. by representing the problem on a number line diagram.)
  • 1.NBT.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.5 — Relate counting to addition and subtraction (e.g. by counting on 2 to add 2, counting back 1 to subtract 1).

Kentucky

  • KY.3.MD.1 — Tell and write time to the nearest minute and measure elapsed time intervals in minutes. Solve word problems involving addition and subtraction of time intervals within and across the hour in minutes.
  • KY.1.NBT.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • KY.2.NBT.2 — Count forwards and backwards within 1000; skip-count by 5s, 10s and 100s.

Louisiana

  • 3.MD.A.1.a — Tell and write time to the nearest minute and measure time intervals in minutes, within 60 minutes, on an analog and digital clock.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 3.MD.A.1 — Understand time to the nearest minute.
  • 3.MD.A.1.c — Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.

Maine

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes using analog and digital clocks. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Maryland

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Massachusetts

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. Identify arithmetic patterns of 10 more and 10 less than using strategies based on place value.
  • 2.MD.C.7.a — Know the relationships of time, including seconds in a minute, minutes in an hour, hours in a day, days in a week; days in a month and a year and approximate number of weeks in a month and weeks in a year.

Michigan

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Minnesota

  • 3.3.3.1 — Tell time to the minute, using digital and analog clocks. Determine elapsed time to the minute. For example: Your trip began at 9:50 a.m. and ended at 3:10 p.m. How long were you traveling?
  • 1.1.1.3 — Count, with and without objects, forward and backward from any given number up to 120.
  • 1.1.1.4 — Find a number that is 10 more or 10 less than a given number. For example: Using a hundred grid, find the number that is 10 more than 27.
  • 3.3.3.2 — Know relationships among units of time. For example: Know the number of minutes in an hour, days in a week and months in a year.
  • 2.3.3.1 — Tell time to the quarter-hour and distinguish between a.m. and p.m.

Mississippi

  • 3.MD.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 2.MD.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

Missouri

  • 3.GM.B.6 — Solve problems involving addition and subtraction of minutes.
  • 1.NBT.B.6 — Calculate 10 more or 10 less than a given number mentally without having to count.
  • 2.GM.D.11 — Describe a time shown on a digital clock as representing hours and minutes, and relate a time shown on a digital clock to the same time on an analog clock.
  • 3.GM.B.4 — Tell and write time to the nearest minute.

Montana

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

Nebraska

  • 3.G.4 — Time: Students will tell time to the nearest minute and find elapsed time.
  • 3.G.4.a — Tell and write time to the minute using both analog and digital clocks.
  • 3.G.4.b — Solve authentic problems involving addition and subtraction of time intervals and find elapsed time.
  • 1.N.4.d — Mentally find 10 more or 10 less than a two-digit number without having to count and explain the reasoning used.

Nevada

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

New Hampshire

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
  • MP7 — Look for and make use of structure.

New Jersey

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

New Mexico

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
  • MP7 — Look for and make use of structure.

New York

  • NY-3.MD.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve one-step word problems involving addition and subtraction of time intervals in minutes.
  • NY-1.NBT.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • NY-2.MD.7 — Tell and write time from analog and digital clocks in five minute increments, using a.m. and p.m. Develop an understanding of common terms, such as, but not limited to, quarter past, half past, and quarter to.

North Carolina

  • NC.3.MD.1 — Tell and write time to the nearest minute. Solve word problems involving addition and subtraction of time intervals within the same hour.
  • NC.1.NBT.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • MP.8 — Look for and express regularity in repeated reasoning.

North Dakota

  • 3.GM.M.3 — Tell and write time to the nearest minute and measure time intervals in minutes.
  • 1.NO.CC.2 — Count backward by ones and tens from a given number within 120.
  • 1.NO.NBT.5 — Mentally add or subtract 10 to or from a given two-digit number and explain the reasoning used.
  • 2.GM.M.3 — Tell and write time to the nearest five minutes (including quarter after and quarter to) with a.m. and p.m. using analog and digital clocks.
  • 3.GM.M.4 — Solve elapsed time authentic word problems on the hour and the half-hour, using a variety of strategies.

Ohio

  • 3.MD.1.a — Tell and write time to the nearest minute. Measure time intervals in minutes (within 90 minutes). Solve real-world problems involving addition and subtraction of time intervals (elapsed time) in minutes, e.g., by representing the problem on a number line diagram or clock.
  • 2.NBT.2 — Count forward and backward within 1,000 by ones, tens, and hundreds starting at any number; skip-count by 5s starting at any multiple of 5.

Oklahoma

  • 3.GM.3.2 — Determine the solutions to problems involving addition and subtraction of time in intervals of five minutes, up to one hour, using pictorial models, number line diagrams, or other tools.
  • 2.GM.3.2 — Read and write time to the quarter hour on an analog and digital clock.
  • 3.GM.3 — Solve problems by telling time to the nearest five-minute interval.
  • 1.N.1.6 — Find a number that is 10 more or 10 less than a given number up to 100.

Oregon

  • 3.GM.B.3 — Tell, write, and measure time to the nearest minute. Solve problems in authentic contexts that involve addition and subtraction of time intervals in minutes.
  • 1.NBT.C.5 — Without having to count, mentally find 10 more or 10 less than a given two-digit number and explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction.

Pennsylvania

  • CC.2.4.3.A.2 — Tell and write time to the nearest minute and solve problems by calculating time intervals.
  • CC.2.1.1.B.3 — Use place-value concepts and properties of operations to add and subtract within 100.

Rhode Island

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. Identify arithmetic patterns of 10 more and 10 less than using strategies based on place value.
  • 2.MD.C.7.a — Know the relationships of time, including seconds in a minute, minutes in an hour, hours in a day, days in a week; days in a month and a year and approximate number of weeks in a month and weeks in a year.

South Carolina

  • 3.MDA.1 — Use analog and digital clocks to determine and record time to the nearest minute, using a.m. and p.m.; measure time intervals in minutes; and solve problems involving addition and subtraction of time intervals within 60 minutes.
  • 1.NSBT.5 — Determine the number that is 10 more or 10 less than a given number through 99 and explain the reasoning verbally and with multiple representations, including concrete models.

South Dakota

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes, using an analog and digital clock. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Understand counting on as addition and counting back as subtraction e.g. 5, (6,7,8) means 5 + 3 and 5, (4,3,2) means 5-3.

Tennessee

  • 3.MD.A.1.a — Tell and write time to the nearest minute and measure time intervals in minutes. Solve contextual problems involving addition and subtraction of time intervals in minutes.
  • 1.NBT.C.6 — Mentally find 10 more or 10 less than a given two-digit number without having to count by ones and explain the reasoning used.
  • 2.MD.C.7 — Tell and write time in quarter hours and to the nearest five minutes (in a.m. and p.m.) using analog and digital clocks.

Texas

  • 3.7C — determine the solutions to problems involving addition and subtraction of time intervals in minutes using pictorial models or tools such as a 15-minute event plus a 30-minute event equals 45 minutes;
  • 1.5A — recite numbers forward and backward from any given number between 1 and 120;
  • 1.5C — use relationships to determine the number that is 10 more and 10 less than a given number up to 120;
  • 2.9G — read and write time to the nearest one-minute increment using analog and digital clocks and distinguish between a.m. and p.m.

Utah

  • 3.MD.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, for example, by representing the problem on a number line diagram.
  • 1.NBT.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.5 — Relate counting to addition and subtraction. For example, by counting on 2 to add 2.

Vermont

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Virginia

  • 3.MG.3a — Tell and write time to the nearest minute, using analog and digital clocks.
  • 2.CE.1b — Apply strategies (e.g., the use of concrete and pictorial models, place value, properties of addition, the relationship between addition and subtraction) to determine the sum or difference of two whole numbers where addends or minuends do not exceed 100.
  • 3.MG.3b — Match a written time (e.g., 4:38, 7:09, 12:51) to the time shown on analog and digital clocks to the nearest minute.

Washington

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 1.OA.C.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.

Washington, D.C.

  • 3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
  • 1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • 2.MD.C.7 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
  • 2.OA.A.1 — Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

West Virginia

  • M.1.13 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count and explain the reasoning used.
  • M.1.5 — Relate counting to addition and subtraction (e.g., by counting on 2 to add 2, by counting backwards 3 to subtract 3).
  • M.2.21 — Tell and write time from analog and digital clocks to the nearest five minutes, using a.m. and p.m.
  • M.3.18 — Tell and write time to the nearest minute, measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes (e.g., by representing the problem on a number line diagram).

Wisconsin

  • M.3.MD.A.1 — Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line.
  • M.1.NBT.C.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
  • M.2.NBT.B.5 — Flexibly and efficiently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. In Grade 2, subtraction with decomposition is an exception and may include drawings or representations.

Wyoming

  • 1.NBT.G.5 — Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used .
  • 1.NBT.E.1.A — Count forward and backward, starting at any number less than 120.
  • 1.OA.C.5 — Relate counting to addition and subtraction using strategies, such as, by counting on and back.
  • 3.MD.G.1 — Use analog clocks to tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes.