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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 616 · 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. 1.5 × 19 =
  2. 2.28 × 99 =
  3. 3.27 × 99 =
  4. 4.14 × 49 =
  5. 5.6 × 19 =
  6. 6.6 × 9 =
  7. 7.3 × 98 =
  8. 8.22 × 99 =
  9. 9.13 × 29 =
  10. 10.19 × 98 =
  11. 11.8 × 98 =
  12. 12.6 × 19 =
  13. 13.18 × 98 =
  14. 14.14 × 19 =
  15. 15.33 × 98 =
  16. 16.3 × 19 =
  17. 17.3 × 29 =
  18. 18.6 × 49 =
  19. 19.5 × 9 =
  20. 20.7 × 99 =
  21. 21.9 × 19 =
  22. 22.3 × 19 =
  23. 23.10 × 49 =
  24. 24.4 × 19 =
  25. 25.4 × 29 =
  26. 26.8 × 9 =
  27. 27.12 × 9 =
  28. 28.6 × 98 =
  29. 29.10 × 29 =
  30. 30.9 × 19 =
  31. 31.3 × 19 =
  32. 32.4 × 49 =
  33. 33.9 × 99 =
  34. 34.6 × 99 =
  35. 35.11 × 49 =
  36. 36.3 × 29 =
  37. 37.15 × 9 =
  38. 38.6 × 19 =
  39. 39.6 × 49 =
  40. 40.12 × 99 =

Answer key

  1. 95
  2. 2772
  3. 2673
  4. 686
  5. 114
  6. 54
  7. 294
  8. 2178
  9. 377
  10. 1862
  11. 784
  12. 114
  13. 1764
  14. 266
  15. 3234
  16. 57
  17. 87
  18. 294
  19. 45
  20. 693
  21. 171
  22. 57
  23. 490
  24. 76
  25. 116
  26. 72
  27. 108
  28. 588
  29. 290
  30. 171
  31. 57
  32. 196
  33. 891
  34. 594
  35. 539
  36. 87
  37. 135
  38. 114
  39. 294
  40. 1188

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