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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 696 · 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. 2.13 × 19 =
  3. 3.6 × 19 =
  4. 4.11 × 9 =
  5. 5.4 × 49 =
  6. 6.9 × 9 =
  7. 7.12 × 49 =
  8. 8.9 × 49 =
  9. 9.12 × 9 =
  10. 10.12 × 49 =
  11. 11.13 × 99 =
  12. 12.33 × 98 =
  13. 13.12 × 49 =
  14. 14.7 × 19 =
  15. 15.12 × 29 =
  16. 16.39 × 99 =
  17. 17.10 × 99 =
  18. 18.39 × 98 =
  19. 19.5 × 49 =
  20. 20.9 × 99 =
  21. 21.10 × 9 =
  22. 22.27 × 99 =
  23. 23.14 × 19 =
  24. 24.4 × 29 =
  25. 25.3 × 9 =
  26. 26.13 × 49 =
  27. 27.3 × 49 =
  28. 28.8 × 98 =
  29. 29.39 × 99 =
  30. 30.15 × 49 =
  31. 31.15 × 9 =
  32. 32.33 × 98 =
  33. 33.9 × 99 =
  34. 34.4 × 9 =
  35. 35.32 × 98 =
  36. 36.34 × 99 =
  37. 37.9 × 98 =
  38. 38.3 × 29 =
  39. 39.4 × 9 =
  40. 40.33 × 99 =

Answer key

  1. 114
  2. 247
  3. 114
  4. 99
  5. 196
  6. 81
  7. 588
  8. 441
  9. 108
  10. 588
  11. 1287
  12. 3234
  13. 588
  14. 133
  15. 348
  16. 3861
  17. 990
  18. 3822
  19. 245
  20. 891
  21. 90
  22. 2673
  23. 266
  24. 116
  25. 27
  26. 637
  27. 147
  28. 784
  29. 3861
  30. 735
  31. 135
  32. 3234
  33. 891
  34. 36
  35. 3136
  36. 3366
  37. 882
  38. 87
  39. 36
  40. 3267

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