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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 579 · 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. 1.12 × 29 =
  2. 2.5 × 9 =
  3. 3.19 × 98 =
  4. 4.11 × 9 =
  5. 5.9 × 29 =
  6. 6.9 × 9 =
  7. 7.11 × 49 =
  8. 8.13 × 29 =
  9. 9.13 × 29 =
  10. 10.12 × 49 =
  11. 11.7 × 19 =
  12. 12.19 × 98 =
  13. 13.4 × 19 =
  14. 14.14 × 29 =
  15. 15.25 × 98 =
  16. 16.13 × 29 =
  17. 17.15 × 19 =
  18. 18.12 × 9 =
  19. 19.4 × 19 =
  20. 20.14 × 29 =
  21. 21.8 × 29 =
  22. 22.11 × 19 =
  23. 23.4 × 19 =
  24. 24.3 × 9 =
  25. 25.15 × 49 =
  26. 26.11 × 19 =
  27. 27.7 × 19 =
  28. 28.8 × 19 =
  29. 29.7 × 9 =
  30. 30.11 × 9 =
  31. 31.31 × 99 =
  32. 32.3 × 9 =
  33. 33.8 × 98 =
  34. 34.15 × 19 =
  35. 35.13 × 49 =
  36. 36.7 × 9 =
  37. 37.10 × 98 =
  38. 38.9 × 99 =
  39. 39.3 × 19 =
  40. 40.8 × 19 =

Answer key

  1. 348
  2. 45
  3. 1862
  4. 99
  5. 261
  6. 81
  7. 539
  8. 377
  9. 377
  10. 588
  11. 133
  12. 1862
  13. 76
  14. 406
  15. 2450
  16. 377
  17. 285
  18. 108
  19. 76
  20. 406
  21. 232
  22. 209
  23. 76
  24. 27
  25. 735
  26. 209
  27. 133
  28. 152
  29. 63
  30. 99
  31. 3069
  32. 27
  33. 784
  34. 285
  35. 637
  36. 63
  37. 980
  38. 891
  39. 57
  40. 152

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