Rounding to the Nearest 10

Part of

• Estimation and Rounding

Standards alignment

Common Core State Standards

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.
• MP8 — Look for and express regularity in repeated reasoning.

Alabama

• MA19.3.10 — Identify the nearest 10 or 100 when rounding whole numbers, using place value understanding.

Alaska

• 3.NBT.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Arizona

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.
• MP8 — Look for and express regularity in repeated reasoning.

Arkansas

• 3.NPV.1 — Round four-digit whole numbers to the nearest 10 or 100, using place value understanding.

California

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.
• 2.NBT.7.1 — Use estimation strategies to make reasonable estimates in problem solving.

Colorado

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Connecticut

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Delaware

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.
• MP8 — Look for and express regularity in repeated reasoning.

Florida

• MA.2.NSO.1.4 — Round whole numbers from 0 to 100 to the nearest 10.
• MA.K12.MTR.3.1 — Complete tasks with mathematical fluency. Mathematicians who complete tasks with mathematical fluency: • Select efficient and appropriate methods for solving problems within the given context. • Maintain flexibility and accuracy while performing procedures and mental calculations. • Complete tasks accurately and with confidence. • Adapt procedures to apply them to a new context. • Use feedback to improve efficiency when performing calculations.

Georgia

• 3.NR.1.3 — Use place value understanding to round whole numbers within up to 1000 to the nearest 10 or 100.
• 3.NR.1 — Use place value reasoning to represent, read, write, and compare numerical values up to 10,000 and round whole numbers up to 1,000.

Hawaii

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.
• MP8 — Look for and express regularity in repeated reasoning.

Idaho

• 3.NBT.A.1 — Round a whole number to the tens or hundreds place, using place value understanding or a visual representation.

Illinois

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Indiana

• 3.NS.6 — Use place value understanding to round two- and three-digit whole numbers to the nearest 10 or 100.
• PS.8 — Look for and express regularity in repeated reasoning.

Iowa

• 3.NBT.A.1 — Round whole numbers to the nearest 10 or 100 within the range of 0–1,000. For example, rounding 643 to the nearest 10 would be 640; to the nearest 100 would be 600.

Kansas

• 3.NBT.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Kentucky

• KY.3.NBT.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Louisiana

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Maine

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Maryland

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Massachusetts

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Michigan

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Minnesota

• 2.1.1.4 — Round numbers up to the nearest 10 and 100 and round numbers down to the nearest 10 and 100. For example: If there are 17 students in the class and granola bars come 10 to a box, you need to buy 20 bars (2 boxes) in order to have enough bars for everyone.
• 3.1.1.4 — Round numbers to the nearest 10,000, 1000, 100 and 10. Round up and round down to estimate sums and differences. For example: 8726 rounded to the nearest 1000 is 9000, rounded to the nearest 100 is 8700, and rounded to the nearest 10 is 8730. Another example: 473 – 291 is between 400 – 300 and 500 – 200, or between 100 and 300.

Mississippi

• 3.NBT.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Missouri

• 3.NBT.A.1 — Round whole numbers to the nearest 10 or 100.

Montana

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Nevada

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

New Hampshire

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.
• MP8 — Look for and express regularity in repeated reasoning.

New Jersey

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

New Mexico

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

New York

• NY-3.NBT.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.
• MP.8 — Look for and express regularity in repeated reasoning.

North Dakota

• 3.NO.NBT.2 — Apply place value understanding to round whole numbers to the nearest 10 or 100.

Ohio

• 3.NBT.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Oklahoma

• 2.N.1.6 — Use place value understanding to round numbers to the nearest ten and nearest hundred (up to 1,000). Recognize when to round in real-world situations.

Oregon

• 3.NBT.A.1 — Use place value understanding to round whole numbers within 1000 to the nearest 10 or 100.
• MP8 — Look for and express regularity in repeated reasoning

Pennsylvania

• CC.2.1.3.B.1 — Apply place-value understanding and properties of operations to perform multi-digit arithmetic.

Rhode Island

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

South Carolina

• 3.NSBT.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

South Dakota

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Tennessee

• 3.NBT.A.1 — Round whole numbers to the nearest 10 or 100 using understanding of place value and use a number line to explain how the number was rounded.

Texas

• 3.4B — round to the nearest 10 or 100 or use compatible numbers to estimate solutions to addition and subtraction problems;
• 3.2C — represent a number on a number line as being between two consecutive multiples of 10; 100; 1,000; or 10,000 and use words to describe relative size of numbers in order to round whole numbers; and

Utah

• 3.NBT.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Vermont

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Virginia

• 2.CE.1a — Apply strategies (e.g., rounding to the nearest 10, compatible numbers, other number relationships) to estimate a solution for single-step addition or subtraction problems, including those in context, where addends and minuends do not exceed 100.

Washington

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Washington, D.C.

• 3.NBT.A.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.

West Virginia

• M.3.12 — Use place value understanding to round whole numbers to the nearest 10 or 100.

Wisconsin

• M.3.NBT.A.1 — Use place value understanding to generate estimates for problems in real-world situations, with whole numbers within 1,000, using strategies such as mental math, benchmark numbers, compatible numbers, and rounding. Assess the reasonableness of their estimates (e.g., Is my estimate too low or too high? What degree of precision do I need for this situation?).

Wyoming

• 3.NBT.E.1 — Use place value understanding to round whole numbers to the nearest 10 or 100.
• 2.MD.G.6.B — Locate the multiple of 10 before and after a given number within 100.