Students can use this worksheet to practice rounding numbers and estimating the answers to addition and subtraction problems before finding the exact solution.

Printable math worksheet for estimating sums and differences with addition and subtraction practice problems for students.

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1. Estimate: 50 + 40 = 90; Actual: 45 + 37 = 82
2. Estimate: 370 + 440 = 810; Actual: 372 + 439 = 811
3. Estimate: 410 + 380 = 790; Actual: 409 + 379 = 788
4. Estimate: 830 + 200 = 1030; Actual: 825 + 199 = 1024
5. Estimate: 940 + 460 = 1400; Actual: 941 + 458 = 1399
6. Estimate: 70 - 20 = 50; Actual: 68 - 24 = 44
7. Estimate: 300 - 150 = 150; Actual: 296 - 152 = 144
8. Estimate: 580 - 330 = 250; Actual: 582 - 326 = 256
9. Estimate: 820 - 540 = 280; Actual: 819 - 539 = 280
10. Estimate: 950 - 530 = 420; Actual: 947 - 533 = 414

Parent Tip: Review the logic above to help your child master the concept of estimating differences worksheet 3rd grade.

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