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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 863 · 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. 1.11 × 49 =
  2. 2.4 × 19 =
  3. 3.21 × 99 =
  4. 4.8 × 29 =
  5. 5.28 × 99 =
  6. 6.9 × 98 =
  7. 7.10 × 29 =
  8. 8.3 × 49 =
  9. 9.5 × 49 =
  10. 10.11 × 19 =
  11. 11.40 × 98 =
  12. 12.6 × 19 =
  13. 13.37 × 99 =
  14. 14.5 × 19 =
  15. 15.8 × 19 =
  16. 16.4 × 19 =
  17. 17.8 × 19 =
  18. 18.14 × 19 =
  19. 19.12 × 49 =
  20. 20.5 × 19 =
  21. 21.10 × 29 =
  22. 22.5 × 9 =
  23. 23.4 × 19 =
  24. 24.36 × 98 =
  25. 25.28 × 98 =
  26. 26.7 × 49 =
  27. 27.5 × 29 =
  28. 28.7 × 9 =
  29. 29.15 × 49 =
  30. 30.6 × 49 =
  31. 31.6 × 98 =
  32. 32.11 × 98 =
  33. 33.5 × 49 =
  34. 34.6 × 19 =
  35. 35.12 × 9 =
  36. 36.37 × 98 =
  37. 37.7 × 29 =
  38. 38.15 × 9 =
  39. 39.12 × 29 =
  40. 40.13 × 19 =

Answer key

  1. 539
  2. 76
  3. 2079
  4. 232
  5. 2772
  6. 882
  7. 290
  8. 147
  9. 245
  10. 209
  11. 3920
  12. 114
  13. 3663
  14. 95
  15. 152
  16. 76
  17. 152
  18. 266
  19. 588
  20. 95
  21. 290
  22. 45
  23. 76
  24. 3528
  25. 2744
  26. 343
  27. 145
  28. 63
  29. 735
  30. 294
  31. 588
  32. 1078
  33. 245
  34. 114
  35. 108
  36. 3626
  37. 203
  38. 135
  39. 348
  40. 247

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