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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 255 · 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. 1.36 × 99 =
  2. 2.5 × 29 =
  3. 3.33 × 98 =
  4. 4.11 × 29 =
  5. 5.8 × 98 =
  6. 6.5 × 9 =
  7. 7.10 × 29 =
  8. 8.4 × 19 =
  9. 9.11 × 29 =
  10. 10.25 × 98 =
  11. 11.5 × 9 =
  12. 12.15 × 9 =
  13. 13.6 × 9 =
  14. 14.13 × 19 =
  15. 15.7 × 29 =
  16. 16.10 × 19 =
  17. 17.10 × 99 =
  18. 18.35 × 99 =
  19. 19.3 × 9 =
  20. 20.27 × 99 =
  21. 21.6 × 19 =
  22. 22.27 × 99 =
  23. 23.15 × 49 =
  24. 24.39 × 98 =
  25. 25.6 × 49 =
  26. 26.6 × 98 =
  27. 27.12 × 29 =
  28. 28.7 × 9 =
  29. 29.38 × 99 =
  30. 30.31 × 99 =
  31. 31.5 × 29 =
  32. 32.14 × 9 =
  33. 33.10 × 9 =
  34. 34.28 × 99 =
  35. 35.8 × 29 =
  36. 36.13 × 19 =
  37. 37.5 × 9 =
  38. 38.36 × 99 =
  39. 39.13 × 98 =
  40. 40.3 × 99 =

Answer key

  1. 3564
  2. 145
  3. 3234
  4. 319
  5. 784
  6. 45
  7. 290
  8. 76
  9. 319
  10. 2450
  11. 45
  12. 135
  13. 54
  14. 247
  15. 203
  16. 190
  17. 990
  18. 3465
  19. 27
  20. 2673
  21. 114
  22. 2673
  23. 735
  24. 3822
  25. 294
  26. 588
  27. 348
  28. 63
  29. 3762
  30. 3069
  31. 145
  32. 126
  33. 90
  34. 2772
  35. 232
  36. 247
  37. 45
  38. 3564
  39. 1274
  40. 297

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