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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 745 · 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. 1.13 × 29 =
  2. 2.11 × 29 =
  3. 3.18 × 99 =
  4. 4.15 × 19 =
  5. 5.10 × 29 =
  6. 6.6 × 49 =
  7. 7.5 × 9 =
  8. 8.11 × 9 =
  9. 9.8 × 9 =
  10. 10.6 × 49 =
  11. 11.3 × 29 =
  12. 12.5 × 9 =
  13. 13.11 × 19 =
  14. 14.10 × 19 =
  15. 15.21 × 99 =
  16. 16.15 × 29 =
  17. 17.20 × 99 =
  18. 18.36 × 99 =
  19. 19.4 × 9 =
  20. 20.3 × 9 =
  21. 21.11 × 19 =
  22. 22.15 × 19 =
  23. 23.4 × 98 =
  24. 24.5 × 9 =
  25. 25.9 × 98 =
  26. 26.11 × 49 =
  27. 27.5 × 49 =
  28. 28.14 × 29 =
  29. 29.11 × 29 =
  30. 30.15 × 19 =
  31. 31.3 × 29 =
  32. 32.36 × 98 =
  33. 33.11 × 99 =
  34. 34.12 × 49 =
  35. 35.21 × 98 =
  36. 36.5 × 29 =
  37. 37.3 × 19 =
  38. 38.8 × 19 =
  39. 39.5 × 9 =
  40. 40.5 × 19 =

Answer key

  1. 377
  2. 319
  3. 1782
  4. 285
  5. 290
  6. 294
  7. 45
  8. 99
  9. 72
  10. 294
  11. 87
  12. 45
  13. 209
  14. 190
  15. 2079
  16. 435
  17. 1980
  18. 3564
  19. 36
  20. 27
  21. 209
  22. 285
  23. 392
  24. 45
  25. 882
  26. 539
  27. 245
  28. 406
  29. 319
  30. 285
  31. 87
  32. 3528
  33. 1089
  34. 588
  35. 2058
  36. 145
  37. 57
  38. 152
  39. 45
  40. 95

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