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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 186 · 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. 1.31 × 99 =
  2. 2.11 × 98 =
  3. 3.12 × 99 =
  4. 4.12 × 29 =
  5. 5.14 × 29 =
  6. 6.31 × 99 =
  7. 7.11 × 49 =
  8. 8.8 × 9 =
  9. 9.4 × 9 =
  10. 10.9 × 9 =
  11. 11.5 × 19 =
  12. 12.6 × 99 =
  13. 13.6 × 29 =
  14. 14.15 × 99 =
  15. 15.14 × 29 =
  16. 16.12 × 29 =
  17. 17.6 × 19 =
  18. 18.4 × 19 =
  19. 19.15 × 19 =
  20. 20.13 × 99 =
  21. 21.10 × 98 =
  22. 22.8 × 29 =
  23. 23.14 × 9 =
  24. 24.12 × 9 =
  25. 25.5 × 29 =
  26. 26.12 × 99 =
  27. 27.14 × 49 =
  28. 28.10 × 49 =
  29. 29.7 × 29 =
  30. 30.8 × 49 =
  31. 31.8 × 99 =
  32. 32.39 × 99 =
  33. 33.3 × 9 =
  34. 34.4 × 29 =
  35. 35.34 × 99 =
  36. 36.14 × 19 =
  37. 37.6 × 19 =
  38. 38.9 × 9 =
  39. 39.8 × 29 =
  40. 40.36 × 98 =

Answer key

  1. 3069
  2. 1078
  3. 1188
  4. 348
  5. 406
  6. 3069
  7. 539
  8. 72
  9. 36
  10. 81
  11. 95
  12. 594
  13. 174
  14. 1485
  15. 406
  16. 348
  17. 114
  18. 76
  19. 285
  20. 1287
  21. 980
  22. 232
  23. 126
  24. 108
  25. 145
  26. 1188
  27. 686
  28. 490
  29. 203
  30. 392
  31. 792
  32. 3861
  33. 27
  34. 116
  35. 3366
  36. 266
  37. 114
  38. 81
  39. 232
  40. 3528

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