4:09Rounding to estimate answers

Addition and Subtraction — Level 4

Round numbers to nearest 10, add estimates. Find area by estimating and then adding actuals. Complete algorithms manually or using a calculator and check answers by rounding.

Topics covered

Number › Adding 3-digit numbers
Number › 3-digit subtraction
Number › Adding 4-digit numbers
Number › 4-digit subtraction

Resources related to this worksheet

Grid game/Dot-to-dot by tens
Fair or unfair?/Parallelograms
Important things you should know
Number lines
Addition and subtraction algorithms