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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 294 · 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. 1.15 × 29 =
  2. 2.15 × 19 =
  3. 3.6 × 98 =
  4. 4.18 × 99 =
  5. 5.6 × 29 =
  6. 6.7 × 49 =
  7. 7.7 × 98 =
  8. 8.28 × 98 =
  9. 9.14 × 9 =
  10. 10.35 × 99 =
  11. 11.4 × 49 =
  12. 12.35 × 99 =
  13. 13.16 × 99 =
  14. 14.24 × 98 =
  15. 15.4 × 29 =
  16. 16.6 × 49 =
  17. 17.9 × 9 =
  18. 18.7 × 29 =
  19. 19.10 × 29 =
  20. 20.5 × 9 =
  21. 21.16 × 98 =
  22. 22.5 × 19 =
  23. 23.13 × 49 =
  24. 24.5 × 19 =
  25. 25.3 × 19 =
  26. 26.6 × 49 =
  27. 27.4 × 19 =
  28. 28.5 × 49 =
  29. 29.4 × 29 =
  30. 30.11 × 29 =
  31. 31.31 × 98 =
  32. 32.11 × 49 =
  33. 33.6 × 9 =
  34. 34.5 × 29 =
  35. 35.3 × 49 =
  36. 36.9 × 49 =
  37. 37.38 × 99 =
  38. 38.3 × 19 =
  39. 39.3 × 49 =
  40. 40.5 × 29 =

Answer key

  1. 435
  2. 285
  3. 588
  4. 1782
  5. 174
  6. 343
  7. 686
  8. 2744
  9. 126
  10. 3465
  11. 196
  12. 3465
  13. 1584
  14. 2352
  15. 116
  16. 294
  17. 81
  18. 203
  19. 290
  20. 45
  21. 1568
  22. 95
  23. 637
  24. 95
  25. 57
  26. 294
  27. 76
  28. 245
  29. 116
  30. 319
  31. 3038
  32. 539
  33. 54
  34. 145
  35. 147
  36. 441
  37. 3762
  38. 57
  39. 147
  40. 145

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