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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 476 · 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. 1.7 × 19 =
  2. 2.3 × 29 =
  3. 3.11 × 9 =
  4. 4.7 × 29 =
  5. 5.9 × 49 =
  6. 6.10 × 9 =
  7. 7.27 × 99 =
  8. 8.11 × 99 =
  9. 9.13 × 29 =
  10. 10.23 × 99 =
  11. 11.11 × 98 =
  12. 12.10 × 9 =
  13. 13.5 × 49 =
  14. 14.5 × 19 =
  15. 15.20 × 99 =
  16. 16.28 × 99 =
  17. 17.8 × 29 =
  18. 18.12 × 9 =
  19. 19.10 × 49 =
  20. 20.19 × 98 =
  21. 21.12 × 9 =
  22. 22.3 × 49 =
  23. 23.12 × 49 =
  24. 24.9 × 29 =
  25. 25.3 × 49 =
  26. 26.25 × 99 =
  27. 27.31 × 98 =
  28. 28.6 × 49 =
  29. 29.5 × 29 =
  30. 30.23 × 98 =
  31. 31.6 × 49 =
  32. 32.4 × 29 =
  33. 33.4 × 29 =
  34. 34.5 × 29 =
  35. 35.23 × 98 =
  36. 36.14 × 29 =
  37. 37.14 × 19 =
  38. 38.24 × 98 =
  39. 39.8 × 98 =
  40. 40.33 × 99 =

Answer key

  1. 133
  2. 87
  3. 99
  4. 203
  5. 441
  6. 90
  7. 2673
  8. 1089
  9. 377
  10. 2277
  11. 1078
  12. 90
  13. 245
  14. 95
  15. 1980
  16. 2772
  17. 232
  18. 108
  19. 490
  20. 1862
  21. 108
  22. 147
  23. 588
  24. 261
  25. 147
  26. 2475
  27. 3038
  28. 294
  29. 145
  30. 2254
  31. 294
  32. 116
  33. 116
  34. 145
  35. 2254
  36. 406
  37. 266
  38. 2352
  39. 784
  40. 3267

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