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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 991 · 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. 1.3 × 98 =
  2. 2.6 × 49 =
  3. 3.13 × 49 =
  4. 4.19 × 98 =
  5. 5.5 × 49 =
  6. 6.13 × 9 =
  7. 7.7 × 9 =
  8. 8.11 × 49 =
  9. 9.6 × 49 =
  10. 10.12 × 29 =
  11. 11.19 × 99 =
  12. 12.5 × 9 =
  13. 13.3 × 19 =
  14. 14.12 × 99 =
  15. 15.12 × 9 =
  16. 16.13 × 49 =
  17. 17.36 × 98 =
  18. 18.15 × 19 =
  19. 19.10 × 98 =
  20. 20.7 × 9 =
  21. 21.3 × 29 =
  22. 22.7 × 49 =
  23. 23.31 × 99 =
  24. 24.9 × 98 =
  25. 25.8 × 98 =
  26. 26.3 × 29 =
  27. 27.12 × 29 =
  28. 28.7 × 19 =
  29. 29.3 × 9 =
  30. 30.8 × 19 =
  31. 31.12 × 9 =
  32. 32.13 × 49 =
  33. 33.8 × 49 =
  34. 34.12 × 9 =
  35. 35.7 × 29 =
  36. 36.9 × 19 =
  37. 37.13 × 9 =
  38. 38.3 × 9 =
  39. 39.4 × 99 =
  40. 40.15 × 9 =

Answer key

  1. 294
  2. 294
  3. 637
  4. 1862
  5. 245
  6. 117
  7. 63
  8. 539
  9. 294
  10. 348
  11. 1881
  12. 45
  13. 57
  14. 1188
  15. 108
  16. 637
  17. 3528
  18. 285
  19. 980
  20. 63
  21. 87
  22. 343
  23. 3069
  24. 882
  25. 784
  26. 87
  27. 348
  28. 133
  29. 27
  30. 152
  31. 108
  32. 637
  33. 392
  34. 108
  35. 203
  36. 171
  37. 117
  38. 27
  39. 396
  40. 135

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