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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 194 · 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. 1.3 × 9 =
  2. 2.10 × 29 =
  3. 3.12 × 98 =
  4. 4.13 × 9 =
  5. 5.3 × 29 =
  6. 6.24 × 99 =
  7. 7.7 × 9 =
  8. 8.23 × 98 =
  9. 9.8 × 98 =
  10. 10.16 × 99 =
  11. 11.29 × 98 =
  12. 12.36 × 99 =
  13. 13.10 × 9 =
  14. 14.18 × 98 =
  15. 15.12 × 29 =
  16. 16.10 × 98 =
  17. 17.23 × 98 =
  18. 18.6 × 29 =
  19. 19.11 × 19 =
  20. 20.30 × 98 =
  21. 21.39 × 99 =
  22. 22.7 × 9 =
  23. 23.5 × 29 =
  24. 24.3 × 19 =
  25. 25.14 × 29 =
  26. 26.14 × 9 =
  27. 27.10 × 29 =
  28. 28.30 × 98 =
  29. 29.13 × 29 =
  30. 30.39 × 98 =
  31. 31.11 × 49 =
  32. 32.30 × 99 =
  33. 33.25 × 99 =
  34. 34.12 × 98 =
  35. 35.14 × 9 =
  36. 36.10 × 19 =
  37. 37.11 × 49 =
  38. 38.4 × 29 =
  39. 39.15 × 9 =
  40. 40.10 × 9 =

Answer key

  1. 27
  2. 290
  3. 1176
  4. 117
  5. 87
  6. 2376
  7. 63
  8. 2254
  9. 784
  10. 1584
  11. 2842
  12. 3564
  13. 90
  14. 1764
  15. 348
  16. 980
  17. 2254
  18. 174
  19. 209
  20. 2940
  21. 3861
  22. 63
  23. 145
  24. 57
  25. 406
  26. 126
  27. 290
  28. 2940
  29. 377
  30. 3822
  31. 539
  32. 2970
  33. 2475
  34. 1176
  35. 126
  36. 190
  37. 539
  38. 116
  39. 135
  40. 90

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