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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 359 · 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. 1.4 × 9 =
  2. 2.12 × 9 =
  3. 3.6 × 98 =
  4. 4.12 × 49 =
  5. 5.6 × 19 =
  6. 6.13 × 9 =
  7. 7.9 × 98 =
  8. 8.11 × 49 =
  9. 9.6 × 9 =
  10. 10.6 × 19 =
  11. 11.5 × 19 =
  12. 12.3 × 9 =
  13. 13.3 × 49 =
  14. 14.4 × 19 =
  15. 15.5 × 98 =
  16. 16.4 × 98 =
  17. 17.3 × 9 =
  18. 18.14 × 98 =
  19. 19.4 × 29 =
  20. 20.13 × 9 =
  21. 21.5 × 29 =
  22. 22.29 × 98 =
  23. 23.6 × 19 =
  24. 24.14 × 98 =
  25. 25.5 × 99 =
  26. 26.7 × 49 =
  27. 27.8 × 29 =
  28. 28.7 × 29 =
  29. 29.14 × 29 =
  30. 30.27 × 99 =
  31. 31.14 × 19 =
  32. 32.8 × 9 =
  33. 33.3 × 19 =
  34. 34.38 × 99 =
  35. 35.8 × 49 =
  36. 36.3 × 98 =
  37. 37.31 × 99 =
  38. 38.14 × 9 =
  39. 39.26 × 99 =
  40. 40.5 × 29 =

Answer key

  1. 36
  2. 108
  3. 588
  4. 588
  5. 114
  6. 117
  7. 882
  8. 539
  9. 54
  10. 114
  11. 95
  12. 27
  13. 147
  14. 76
  15. 490
  16. 392
  17. 27
  18. 1372
  19. 116
  20. 117
  21. 145
  22. 2842
  23. 114
  24. 1372
  25. 495
  26. 343
  27. 232
  28. 203
  29. 406
  30. 2673
  31. 266
  32. 72
  33. 57
  34. 3762
  35. 392
  36. 294
  37. 3069
  38. 126
  39. 2574
  40. 145

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