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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 547 · 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. 1.5 × 9 =
  2. 2.6 × 29 =
  3. 3.16 × 99 =
  4. 4.9 × 49 =
  5. 5.12 × 9 =
  6. 6.11 × 9 =
  7. 7.5 × 49 =
  8. 8.4 × 29 =
  9. 9.5 × 29 =
  10. 10.28 × 99 =
  11. 11.14 × 98 =
  12. 12.39 × 99 =
  13. 13.11 × 99 =
  14. 14.5 × 49 =
  15. 15.9 × 19 =
  16. 16.35 × 98 =
  17. 17.6 × 99 =
  18. 18.29 × 99 =
  19. 19.40 × 99 =
  20. 20.3 × 19 =
  21. 21.4 × 49 =
  22. 22.12 × 99 =
  23. 23.14 × 19 =
  24. 24.11 × 99 =
  25. 25.4 × 49 =
  26. 26.3 × 9 =
  27. 27.17 × 98 =
  28. 28.6 × 99 =
  29. 29.7 × 29 =
  30. 30.18 × 99 =
  31. 31.4 × 49 =
  32. 32.7 × 49 =
  33. 33.23 × 99 =
  34. 34.6 × 49 =
  35. 35.6 × 99 =
  36. 36.14 × 49 =
  37. 37.3 × 29 =
  38. 38.10 × 99 =
  39. 39.3 × 49 =
  40. 40.32 × 99 =

Answer key

  1. 45
  2. 174
  3. 1584
  4. 441
  5. 108
  6. 99
  7. 245
  8. 116
  9. 145
  10. 2772
  11. 1372
  12. 3861
  13. 1089
  14. 245
  15. 171
  16. 3430
  17. 594
  18. 2871
  19. 3960
  20. 57
  21. 196
  22. 1188
  23. 266
  24. 1089
  25. 196
  26. 27
  27. 1666
  28. 594
  29. 203
  30. 1782
  31. 196
  32. 343
  33. 2277
  34. 294
  35. 594
  36. 686
  37. 87
  38. 990
  39. 147
  40. 3168

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