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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 974 · 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. 1.36 × 98 =
  2. 2.7 × 29 =
  3. 3.8 × 29 =
  4. 4.14 × 29 =
  5. 5.32 × 99 =
  6. 6.29 × 99 =
  7. 7.10 × 19 =
  8. 8.5 × 29 =
  9. 9.18 × 99 =
  10. 10.11 × 49 =
  11. 11.11 × 9 =
  12. 12.9 × 29 =
  13. 13.9 × 19 =
  14. 14.6 × 9 =
  15. 15.17 × 98 =
  16. 16.8 × 19 =
  17. 17.6 × 9 =
  18. 18.11 × 29 =
  19. 19.4 × 49 =
  20. 20.12 × 49 =
  21. 21.6 × 49 =
  22. 22.7 × 49 =
  23. 23.3 × 29 =
  24. 24.26 × 98 =
  25. 25.5 × 99 =
  26. 26.34 × 99 =
  27. 27.12 × 9 =
  28. 28.17 × 98 =
  29. 29.15 × 9 =
  30. 30.12 × 49 =
  31. 31.10 × 29 =
  32. 32.10 × 19 =
  33. 33.6 × 19 =
  34. 34.10 × 29 =
  35. 35.35 × 98 =
  36. 36.3 × 9 =
  37. 37.3 × 98 =
  38. 38.8 × 9 =
  39. 39.11 × 9 =
  40. 40.4 × 19 =

Answer key

  1. 3528
  2. 203
  3. 232
  4. 406
  5. 3168
  6. 2871
  7. 190
  8. 145
  9. 1782
  10. 539
  11. 99
  12. 261
  13. 171
  14. 54
  15. 1666
  16. 152
  17. 54
  18. 319
  19. 196
  20. 588
  21. 294
  22. 343
  23. 87
  24. 2548
  25. 495
  26. 3366
  27. 108
  28. 1666
  29. 135
  30. 588
  31. 290
  32. 190
  33. 114
  34. 290
  35. 3430
  36. 27
  37. 294
  38. 72
  39. 99
  40. 76

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