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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 997 · 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. 1.15 × 19 =
  2. 2.31 × 98 =
  3. 3.12 × 9 =
  4. 4.5 × 9 =
  5. 5.20 × 98 =
  6. 6.10 × 19 =
  7. 7.10 × 98 =
  8. 8.4 × 29 =
  9. 9.13 × 98 =
  10. 10.31 × 98 =
  11. 11.4 × 19 =
  12. 12.30 × 99 =
  13. 13.7 × 19 =
  14. 14.9 × 9 =
  15. 15.14 × 29 =
  16. 16.11 × 19 =
  17. 17.5 × 29 =
  18. 18.5 × 29 =
  19. 19.6 × 9 =
  20. 20.39 × 98 =
  21. 21.24 × 98 =
  22. 22.4 × 98 =
  23. 23.14 × 29 =
  24. 24.10 × 9 =
  25. 25.13 × 29 =
  26. 26.8 × 9 =
  27. 27.11 × 98 =
  28. 28.13 × 29 =
  29. 29.13 × 19 =
  30. 30.15 × 49 =
  31. 31.12 × 9 =
  32. 32.8 × 49 =
  33. 33.14 × 9 =
  34. 34.10 × 19 =
  35. 35.6 × 98 =
  36. 36.5 × 29 =
  37. 37.12 × 98 =
  38. 38.3 × 9 =
  39. 39.11 × 99 =
  40. 40.15 × 29 =

Answer key

  1. 285
  2. 3038
  3. 108
  4. 45
  5. 1960
  6. 190
  7. 980
  8. 116
  9. 1274
  10. 3038
  11. 76
  12. 2970
  13. 133
  14. 81
  15. 406
  16. 209
  17. 145
  18. 145
  19. 54
  20. 3822
  21. 2352
  22. 392
  23. 406
  24. 90
  25. 377
  26. 72
  27. 1078
  28. 377
  29. 247
  30. 735
  31. 108
  32. 392
  33. 126
  34. 190
  35. 588
  36. 145
  37. 1176
  38. 27
  39. 1089
  40. 435

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