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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 334 · 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. 1.10 × 9 =
  2. 2.26 × 99 =
  3. 3.5 × 19 =
  4. 4.3 × 19 =
  5. 5.13 × 98 =
  6. 6.14 × 9 =
  7. 7.6 × 9 =
  8. 8.15 × 49 =
  9. 9.12 × 49 =
  10. 10.3 × 9 =
  11. 11.6 × 49 =
  12. 12.6 × 9 =
  13. 13.21 × 99 =
  14. 14.7 × 29 =
  15. 15.6 × 49 =
  16. 16.9 × 9 =
  17. 17.6 × 9 =
  18. 18.12 × 9 =
  19. 19.12 × 98 =
  20. 20.8 × 99 =
  21. 21.6 × 9 =
  22. 22.39 × 98 =
  23. 23.14 × 98 =
  24. 24.12 × 49 =
  25. 25.6 × 98 =
  26. 26.5 × 99 =
  27. 27.19 × 99 =
  28. 28.8 × 29 =
  29. 29.26 × 99 =
  30. 30.8 × 9 =
  31. 31.10 × 29 =
  32. 32.24 × 99 =
  33. 33.6 × 9 =
  34. 34.12 × 98 =
  35. 35.7 × 99 =
  36. 36.33 × 99 =
  37. 37.11 × 29 =
  38. 38.9 × 19 =
  39. 39.7 × 19 =
  40. 40.7 × 9 =

Answer key

  1. 90
  2. 2574
  3. 95
  4. 57
  5. 1274
  6. 126
  7. 54
  8. 735
  9. 588
  10. 27
  11. 294
  12. 54
  13. 2079
  14. 203
  15. 294
  16. 81
  17. 54
  18. 108
  19. 1176
  20. 792
  21. 54
  22. 3822
  23. 1372
  24. 588
  25. 588
  26. 495
  27. 1881
  28. 232
  29. 2574
  30. 72
  31. 290
  32. 2376
  33. 54
  34. 1176
  35. 693
  36. 3267
  37. 319
  38. 171
  39. 133
  40. 63

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