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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 936 · 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. 1.7 × 49 =
  2. 2.38 × 99 =
  3. 3.14 × 9 =
  4. 4.5 × 19 =
  5. 5.8 × 9 =
  6. 6.10 × 9 =
  7. 7.33 × 98 =
  8. 8.10 × 49 =
  9. 9.3 × 29 =
  10. 10.27 × 98 =
  11. 11.3 × 49 =
  12. 12.8 × 9 =
  13. 13.9 × 29 =
  14. 14.4 × 19 =
  15. 15.8 × 29 =
  16. 16.34 × 99 =
  17. 17.6 × 29 =
  18. 18.31 × 99 =
  19. 19.12 × 9 =
  20. 20.4 × 29 =
  21. 21.12 × 49 =
  22. 22.8 × 98 =
  23. 23.3 × 98 =
  24. 24.15 × 29 =
  25. 25.3 × 98 =
  26. 26.3 × 29 =
  27. 27.7 × 9 =
  28. 28.3 × 29 =
  29. 29.35 × 99 =
  30. 30.9 × 99 =
  31. 31.9 × 9 =
  32. 32.4 × 29 =
  33. 33.7 × 19 =
  34. 34.35 × 99 =
  35. 35.17 × 99 =
  36. 36.9 × 98 =
  37. 37.14 × 9 =
  38. 38.9 × 9 =
  39. 39.20 × 98 =
  40. 40.3 × 49 =

Answer key

  1. 343
  2. 3762
  3. 126
  4. 95
  5. 72
  6. 90
  7. 3234
  8. 490
  9. 87
  10. 2646
  11. 147
  12. 72
  13. 261
  14. 76
  15. 232
  16. 3366
  17. 174
  18. 3069
  19. 108
  20. 116
  21. 588
  22. 784
  23. 294
  24. 435
  25. 294
  26. 87
  27. 63
  28. 87
  29. 3465
  30. 891
  31. 81
  32. 116
  33. 133
  34. 3465
  35. 1683
  36. 882
  37. 126
  38. 81
  39. 1960
  40. 147

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