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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 849 · 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. 1.30 × 98 =
  2. 2.4 × 98 =
  3. 3.12 × 29 =
  4. 4.6 × 49 =
  5. 5.7 × 99 =
  6. 6.5 × 9 =
  7. 7.38 × 98 =
  8. 8.6 × 19 =
  9. 9.15 × 49 =
  10. 10.13 × 49 =
  11. 11.39 × 99 =
  12. 12.12 × 99 =
  13. 13.3 × 29 =
  14. 14.6 × 29 =
  15. 15.3 × 19 =
  16. 16.6 × 98 =
  17. 17.8 × 9 =
  18. 18.29 × 99 =
  19. 19.3 × 49 =
  20. 20.38 × 99 =
  21. 21.15 × 29 =
  22. 22.6 × 29 =
  23. 23.14 × 19 =
  24. 24.5 × 29 =
  25. 25.12 × 9 =
  26. 26.5 × 9 =
  27. 27.6 × 9 =
  28. 28.10 × 29 =
  29. 29.8 × 49 =
  30. 30.11 × 19 =
  31. 31.7 × 49 =
  32. 32.4 × 99 =
  33. 33.5 × 49 =
  34. 34.7 × 49 =
  35. 35.6 × 49 =
  36. 36.13 × 19 =
  37. 37.12 × 49 =
  38. 38.8 × 49 =
  39. 39.22 × 99 =
  40. 40.11 × 19 =

Answer key

  1. 2940
  2. 392
  3. 348
  4. 294
  5. 693
  6. 45
  7. 3724
  8. 114
  9. 735
  10. 637
  11. 3861
  12. 1188
  13. 87
  14. 174
  15. 57
  16. 588
  17. 72
  18. 2871
  19. 147
  20. 3762
  21. 435
  22. 174
  23. 266
  24. 145
  25. 108
  26. 45
  27. 54
  28. 290
  29. 392
  30. 209
  31. 343
  32. 396
  33. 245
  34. 343
  35. 294
  36. 247
  37. 588
  38. 392
  39. 2178
  40. 209

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