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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 423 · 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. 2.24 × 98 =
  3. 3.11 × 19 =
  4. 4.6 × 9 =
  5. 5.9 × 19 =
  6. 6.9 × 99 =
  7. 7.12 × 49 =
  8. 8.4 × 99 =
  9. 9.12 × 9 =
  10. 10.6 × 9 =
  11. 11.4 × 19 =
  12. 12.39 × 99 =
  13. 13.5 × 9 =
  14. 14.30 × 99 =
  15. 15.13 × 19 =
  16. 16.22 × 98 =
  17. 17.4 × 49 =
  18. 18.6 × 19 =
  19. 19.14 × 19 =
  20. 20.14 × 99 =
  21. 21.5 × 49 =
  22. 22.13 × 49 =
  23. 23.16 × 99 =
  24. 24.6 × 49 =
  25. 25.13 × 9 =
  26. 26.4 × 19 =
  27. 27.14 × 98 =
  28. 28.37 × 99 =
  29. 29.4 × 49 =
  30. 30.5 × 49 =
  31. 31.10 × 9 =
  32. 32.4 × 99 =
  33. 33.4 × 19 =
  34. 34.13 × 9 =
  35. 35.35 × 99 =
  36. 36.6 × 19 =
  37. 37.8 × 29 =
  38. 38.13 × 19 =
  39. 39.5 × 29 =
  40. 40.9 × 29 =

Answer key

  1. 348
  2. 2352
  3. 209
  4. 54
  5. 171
  6. 891
  7. 588
  8. 396
  9. 108
  10. 54
  11. 76
  12. 3861
  13. 45
  14. 2970
  15. 247
  16. 2156
  17. 196
  18. 114
  19. 266
  20. 1386
  21. 245
  22. 637
  23. 1584
  24. 294
  25. 117
  26. 76
  27. 1372
  28. 3663
  29. 196
  30. 245
  31. 90
  32. 396
  33. 76
  34. 117
  35. 3465
  36. 114
  37. 232
  38. 247
  39. 145
  40. 261

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