CCSS 3.NBT.A.1 Worksheets
Grade 3 · Number & Operations in Base Ten
Round whole numbers to the nearest ten or hundred using place value understanding.
Below are free printable worksheets that support 3.NBT.A.1. Print them as PDFs, or generate a fresh one. Every math answer key is computed in code, so it is never wrong.
Teach this standard
Deliver a whole lesson on 3.NBT.A.1 from a textbook-grade teaching unit, with a hook, worked examples, diagrams, misconceptions, and an exit ticket.
Teaching guide
Round whole numbers to the nearest ten or hundred using place value understanding.
Use a number line to see which ten/hundred a number is closest to. Underline the rounding digit and check the digit to its right.
Generated and checked in code, so it is correct.
Rounding to the wrong place, and the exact-halfway case (5 rounds up) being applied inconsistently.