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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 585 · 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. 1.6 × 19 =
  2. 2.8 × 29 =
  3. 3.9 × 29 =
  4. 4.5 × 9 =
  5. 5.33 × 99 =
  6. 6.29 × 99 =
  7. 7.15 × 29 =
  8. 8.30 × 98 =
  9. 9.9 × 99 =
  10. 10.18 × 98 =
  11. 11.17 × 99 =
  12. 12.6 × 19 =
  13. 13.24 × 98 =
  14. 14.9 × 29 =
  15. 15.10 × 9 =
  16. 16.3 × 49 =
  17. 17.11 × 49 =
  18. 18.4 × 49 =
  19. 19.6 × 49 =
  20. 20.13 × 9 =
  21. 21.7 × 9 =
  22. 22.12 × 29 =
  23. 23.4 × 19 =
  24. 24.7 × 9 =
  25. 25.15 × 9 =
  26. 26.4 × 19 =
  27. 27.12 × 9 =
  28. 28.4 × 29 =
  29. 29.4 × 19 =
  30. 30.5 × 9 =
  31. 31.15 × 29 =
  32. 32.14 × 49 =
  33. 33.39 × 98 =
  34. 34.4 × 49 =
  35. 35.10 × 9 =
  36. 36.8 × 99 =
  37. 37.6 × 19 =
  38. 38.33 × 99 =
  39. 39.6 × 9 =
  40. 40.26 × 98 =

Answer key

  1. 114
  2. 232
  3. 261
  4. 45
  5. 3267
  6. 2871
  7. 435
  8. 2940
  9. 891
  10. 1764
  11. 1683
  12. 114
  13. 2352
  14. 261
  15. 90
  16. 147
  17. 539
  18. 196
  19. 294
  20. 117
  21. 63
  22. 348
  23. 76
  24. 63
  25. 135
  26. 76
  27. 108
  28. 116
  29. 76
  30. 45
  31. 435
  32. 686
  33. 3822
  34. 196
  35. 90
  36. 792
  37. 114
  38. 3267
  39. 54
  40. 2548

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