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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 756 · 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 × 99 =
  2. 2.15 × 19 =
  3. 3.37 × 98 =
  4. 4.10 × 98 =
  5. 5.25 × 98 =
  6. 6.3 × 19 =
  7. 7.15 × 19 =
  8. 8.3 × 29 =
  9. 9.18 × 99 =
  10. 10.15 × 29 =
  11. 11.14 × 98 =
  12. 12.9 × 98 =
  13. 13.4 × 9 =
  14. 14.11 × 98 =
  15. 15.10 × 19 =
  16. 16.7 × 19 =
  17. 17.8 × 29 =
  18. 18.4 × 19 =
  19. 19.11 × 29 =
  20. 20.8 × 19 =
  21. 21.31 × 99 =
  22. 22.6 × 49 =
  23. 23.7 × 99 =
  24. 24.14 × 9 =
  25. 25.33 × 98 =
  26. 26.15 × 29 =
  27. 27.7 × 99 =
  28. 28.5 × 49 =
  29. 29.8 × 9 =
  30. 30.7 × 49 =
  31. 31.5 × 19 =
  32. 32.3 × 9 =
  33. 33.4 × 29 =
  34. 34.15 × 29 =
  35. 35.13 × 49 =
  36. 36.3 × 19 =
  37. 37.33 × 98 =
  38. 38.10 × 9 =
  39. 39.11 × 49 =
  40. 40.17 × 98 =

Answer key

  1. 594
  2. 285
  3. 3626
  4. 980
  5. 2450
  6. 57
  7. 285
  8. 87
  9. 1782
  10. 435
  11. 1372
  12. 882
  13. 36
  14. 1078
  15. 190
  16. 133
  17. 232
  18. 76
  19. 319
  20. 152
  21. 3069
  22. 294
  23. 693
  24. 126
  25. 3234
  26. 435
  27. 693
  28. 245
  29. 72
  30. 343
  31. 95
  32. 27
  33. 116
  34. 435
  35. 637
  36. 57
  37. 3234
  38. 90
  39. 539
  40. 1666

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