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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 928 · 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. 1.15 × 49 =
  2. 2.11 × 98 =
  3. 3.7 × 49 =
  4. 4.6 × 29 =
  5. 5.6 × 29 =
  6. 6.13 × 29 =
  7. 7.12 × 9 =
  8. 8.7 × 49 =
  9. 9.25 × 98 =
  10. 10.11 × 49 =
  11. 11.7 × 49 =
  12. 12.11 × 49 =
  13. 13.29 × 98 =
  14. 14.33 × 99 =
  15. 15.14 × 29 =
  16. 16.14 × 29 =
  17. 17.4 × 49 =
  18. 18.24 × 99 =
  19. 19.5 × 49 =
  20. 20.6 × 49 =
  21. 21.8 × 9 =
  22. 22.13 × 19 =
  23. 23.18 × 98 =
  24. 24.6 × 29 =
  25. 25.11 × 49 =
  26. 26.40 × 99 =
  27. 27.7 × 9 =
  28. 28.13 × 29 =
  29. 29.3 × 19 =
  30. 30.8 × 19 =
  31. 31.10 × 9 =
  32. 32.34 × 99 =
  33. 33.3 × 19 =
  34. 34.4 × 19 =
  35. 35.9 × 9 =
  36. 36.8 × 9 =
  37. 37.8 × 98 =
  38. 38.12 × 49 =
  39. 39.5 × 29 =
  40. 40.11 × 29 =

Answer key

  1. 735
  2. 1078
  3. 343
  4. 174
  5. 174
  6. 377
  7. 108
  8. 343
  9. 2450
  10. 539
  11. 343
  12. 539
  13. 2842
  14. 3267
  15. 406
  16. 406
  17. 196
  18. 2376
  19. 245
  20. 294
  21. 72
  22. 247
  23. 1764
  24. 174
  25. 539
  26. 3960
  27. 63
  28. 377
  29. 57
  30. 152
  31. 90
  32. 3366
  33. 57
  34. 76
  35. 81
  36. 72
  37. 784
  38. 588
  39. 145
  40. 319

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