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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 313 · 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. 1.32 × 99 =
  2. 2.9 × 49 =
  3. 3.11 × 49 =
  4. 4.25 × 99 =
  5. 5.21 × 98 =
  6. 6.12 × 49 =
  7. 7.29 × 98 =
  8. 8.4 × 19 =
  9. 9.12 × 9 =
  10. 10.11 × 99 =
  11. 11.15 × 9 =
  12. 12.13 × 49 =
  13. 13.4 × 9 =
  14. 14.11 × 9 =
  15. 15.12 × 29 =
  16. 16.7 × 9 =
  17. 17.25 × 99 =
  18. 18.15 × 29 =
  19. 19.3 × 9 =
  20. 20.14 × 98 =
  21. 21.18 × 99 =
  22. 22.7 × 49 =
  23. 23.15 × 99 =
  24. 24.15 × 19 =
  25. 25.7 × 49 =
  26. 26.3 × 49 =
  27. 27.11 × 49 =
  28. 28.5 × 19 =
  29. 29.14 × 49 =
  30. 30.14 × 49 =
  31. 31.8 × 29 =
  32. 32.6 × 9 =
  33. 33.4 × 19 =
  34. 34.9 × 9 =
  35. 35.27 × 98 =
  36. 36.7 × 9 =
  37. 37.12 × 9 =
  38. 38.6 × 49 =
  39. 39.3 × 9 =
  40. 40.11 × 49 =

Answer key

  1. 3168
  2. 441
  3. 539
  4. 2475
  5. 2058
  6. 588
  7. 2842
  8. 76
  9. 108
  10. 1089
  11. 135
  12. 637
  13. 36
  14. 99
  15. 348
  16. 63
  17. 2475
  18. 435
  19. 27
  20. 1372
  21. 1782
  22. 343
  23. 1485
  24. 285
  25. 343
  26. 147
  27. 539
  28. 95
  29. 686
  30. 686
  31. 232
  32. 54
  33. 76
  34. 81
  35. 2646
  36. 63
  37. 108
  38. 294
  39. 27
  40. 539

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