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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 809 · 40 questions
TalentJR

How it works (Round and adjust): Round up: 49 is 50 − 1, 98 is 100 − 2. Multiply by the round number. Take away the number times the bit you added.

NameDateTime takenScore ___ / 40
  1. 1.36 × 98 =
  2. 2.4 × 99 =
  3. 3.8 × 9 =
  4. 4.12 × 9 =
  5. 5.6 × 9 =
  6. 6.11 × 49 =
  7. 7.7 × 9 =
  8. 8.14 × 9 =
  9. 9.12 × 49 =
  10. 10.12 × 49 =
  11. 11.6 × 19 =
  12. 12.38 × 99 =
  13. 13.3 × 19 =
  14. 14.15 × 49 =
  15. 15.7 × 9 =
  16. 16.39 × 99 =
  17. 17.4 × 19 =
  18. 18.25 × 99 =
  19. 19.25 × 99 =
  20. 20.5 × 9 =
  21. 21.26 × 98 =
  22. 22.5 × 49 =
  23. 23.5 × 9 =
  24. 24.6 × 9 =
  25. 25.9 × 9 =
  26. 26.13 × 49 =
  27. 27.36 × 99 =
  28. 28.11 × 19 =
  29. 29.3 × 29 =
  30. 30.4 × 9 =
  31. 31.4 × 9 =
  32. 32.10 × 29 =
  33. 33.27 × 98 =
  34. 34.5 × 49 =
  35. 35.14 × 29 =
  36. 36.36 × 98 =
  37. 37.7 × 19 =
  38. 38.11 × 29 =
  39. 39.22 × 99 =
  40. 40.38 × 98 =

Answer key

  1. 3528
  2. 396
  3. 72
  4. 108
  5. 54
  6. 539
  7. 63
  8. 126
  9. 588
  10. 588
  11. 114
  12. 3762
  13. 57
  14. 735
  15. 63
  16. 3861
  17. 76
  18. 2475
  19. 2475
  20. 45
  21. 2548
  22. 245
  23. 45
  24. 54
  25. 81
  26. 637
  27. 3564
  28. 209
  29. 87
  30. 36
  31. 36
  32. 290
  33. 2646
  34. 245
  35. 406
  36. 3528
  37. 133
  38. 319
  39. 2178
  40. 3724

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