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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 731 · 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. 1.11 × 29 =
  2. 2.9 × 19 =
  3. 3.5 × 19 =
  4. 4.37 × 99 =
  5. 5.13 × 49 =
  6. 6.12 × 29 =
  7. 7.9 × 9 =
  8. 8.6 × 19 =
  9. 9.9 × 9 =
  10. 10.12 × 49 =
  11. 11.6 × 9 =
  12. 12.5 × 19 =
  13. 13.29 × 98 =
  14. 14.6 × 49 =
  15. 15.15 × 29 =
  16. 16.4 × 19 =
  17. 17.7 × 29 =
  18. 18.8 × 9 =
  19. 19.6 × 19 =
  20. 20.13 × 9 =
  21. 21.12 × 19 =
  22. 22.5 × 49 =
  23. 23.16 × 99 =
  24. 24.8 × 29 =
  25. 25.5 × 9 =
  26. 26.3 × 29 =
  27. 27.3 × 19 =
  28. 28.6 × 29 =
  29. 29.6 × 49 =
  30. 30.15 × 19 =
  31. 31.3 × 29 =
  32. 32.12 × 19 =
  33. 33.39 × 98 =
  34. 34.10 × 9 =
  35. 35.33 × 99 =
  36. 36.16 × 99 =
  37. 37.16 × 99 =
  38. 38.8 × 9 =
  39. 39.8 × 49 =
  40. 40.15 × 29 =

Answer key

  1. 319
  2. 171
  3. 95
  4. 3663
  5. 637
  6. 348
  7. 81
  8. 114
  9. 81
  10. 588
  11. 54
  12. 95
  13. 2842
  14. 294
  15. 435
  16. 76
  17. 203
  18. 72
  19. 114
  20. 117
  21. 228
  22. 245
  23. 1584
  24. 232
  25. 45
  26. 87
  27. 57
  28. 174
  29. 294
  30. 285
  31. 87
  32. 228
  33. 3822
  34. 90
  35. 3267
  36. 1584
  37. 1584
  38. 72
  39. 392
  40. 435

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