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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 512 · 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. 1.14 × 9 =
  2. 2.6 × 29 =
  3. 3.13 × 98 =
  4. 4.9 × 19 =
  5. 5.6 × 49 =
  6. 6.34 × 99 =
  7. 7.3 × 9 =
  8. 8.15 × 9 =
  9. 9.7 × 19 =
  10. 10.4 × 99 =
  11. 11.13 × 19 =
  12. 12.4 × 49 =
  13. 13.12 × 49 =
  14. 14.11 × 49 =
  15. 15.11 × 9 =
  16. 16.32 × 98 =
  17. 17.10 × 29 =
  18. 18.10 × 9 =
  19. 19.7 × 49 =
  20. 20.28 × 99 =
  21. 21.32 × 99 =
  22. 22.13 × 19 =
  23. 23.29 × 98 =
  24. 24.25 × 98 =
  25. 25.3 × 49 =
  26. 26.12 × 9 =
  27. 27.5 × 19 =
  28. 28.10 × 19 =
  29. 29.34 × 99 =
  30. 30.5 × 99 =
  31. 31.32 × 98 =
  32. 32.14 × 29 =
  33. 33.12 × 9 =
  34. 34.10 × 98 =
  35. 35.4 × 19 =
  36. 36.15 × 9 =
  37. 37.6 × 9 =
  38. 38.8 × 19 =
  39. 39.10 × 19 =
  40. 40.7 × 9 =

Answer key

  1. 126
  2. 174
  3. 1274
  4. 171
  5. 294
  6. 3366
  7. 27
  8. 135
  9. 133
  10. 396
  11. 247
  12. 196
  13. 588
  14. 539
  15. 99
  16. 3136
  17. 290
  18. 90
  19. 343
  20. 2772
  21. 3168
  22. 247
  23. 2842
  24. 2450
  25. 147
  26. 108
  27. 95
  28. 190
  29. 3366
  30. 495
  31. 3136
  32. 406
  33. 108
  34. 980
  35. 76
  36. 135
  37. 54
  38. 152
  39. 190
  40. 63

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