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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 449 · 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 × 99 =
  2. 2.4 × 19 =
  3. 3.10 × 9 =
  4. 4.6 × 9 =
  5. 5.24 × 99 =
  6. 6.19 × 99 =
  7. 7.12 × 9 =
  8. 8.5 × 9 =
  9. 9.13 × 9 =
  10. 10.6 × 19 =
  11. 11.4 × 9 =
  12. 12.7 × 19 =
  13. 13.9 × 9 =
  14. 14.15 × 49 =
  15. 15.3 × 19 =
  16. 16.7 × 9 =
  17. 17.27 × 98 =
  18. 18.13 × 9 =
  19. 19.12 × 19 =
  20. 20.39 × 98 =
  21. 21.8 × 19 =
  22. 22.14 × 9 =
  23. 23.15 × 19 =
  24. 24.9 × 9 =
  25. 25.15 × 19 =
  26. 26.11 × 49 =
  27. 27.12 × 49 =
  28. 28.19 × 99 =
  29. 29.11 × 49 =
  30. 30.18 × 99 =
  31. 31.3 × 19 =
  32. 32.7 × 29 =
  33. 33.8 × 9 =
  34. 34.28 × 98 =
  35. 35.12 × 19 =
  36. 36.14 × 9 =
  37. 37.5 × 9 =
  38. 38.21 × 99 =
  39. 39.40 × 98 =
  40. 40.13 × 49 =

Answer key

  1. 990
  2. 76
  3. 90
  4. 54
  5. 2376
  6. 1881
  7. 108
  8. 45
  9. 117
  10. 114
  11. 36
  12. 133
  13. 81
  14. 735
  15. 57
  16. 63
  17. 2646
  18. 117
  19. 228
  20. 3822
  21. 152
  22. 126
  23. 285
  24. 81
  25. 285
  26. 539
  27. 588
  28. 1881
  29. 539
  30. 1782
  31. 57
  32. 203
  33. 72
  34. 2744
  35. 228
  36. 126
  37. 45
  38. 2079
  39. 3920
  40. 637

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