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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 867 · 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. 1.6 × 49 =
  2. 2.9 × 9 =
  3. 3.14 × 9 =
  4. 4.6 × 29 =
  5. 5.40 × 99 =
  6. 6.8 × 29 =
  7. 7.11 × 29 =
  8. 8.9 × 49 =
  9. 9.11 × 19 =
  10. 10.29 × 98 =
  11. 11.23 × 99 =
  12. 12.3 × 49 =
  13. 13.14 × 9 =
  14. 14.8 × 9 =
  15. 15.12 × 29 =
  16. 16.9 × 99 =
  17. 17.3 × 19 =
  18. 18.6 × 49 =
  19. 19.4 × 9 =
  20. 20.12 × 98 =
  21. 21.3 × 29 =
  22. 22.8 × 49 =
  23. 23.14 × 19 =
  24. 24.8 × 29 =
  25. 25.18 × 98 =
  26. 26.13 × 19 =
  27. 27.26 × 98 =
  28. 28.7 × 19 =
  29. 29.6 × 49 =
  30. 30.13 × 19 =
  31. 31.11 × 98 =
  32. 32.13 × 99 =
  33. 33.3 × 9 =
  34. 34.9 × 49 =
  35. 35.7 × 98 =
  36. 36.5 × 9 =
  37. 37.5 × 49 =
  38. 38.9 × 9 =
  39. 39.23 × 98 =
  40. 40.8 × 49 =

Answer key

  1. 294
  2. 81
  3. 126
  4. 174
  5. 3960
  6. 232
  7. 319
  8. 441
  9. 209
  10. 2842
  11. 2277
  12. 147
  13. 126
  14. 72
  15. 348
  16. 891
  17. 57
  18. 294
  19. 36
  20. 1176
  21. 87
  22. 392
  23. 266
  24. 232
  25. 1764
  26. 247
  27. 2548
  28. 133
  29. 294
  30. 247
  31. 1078
  32. 1287
  33. 27
  34. 441
  35. 686
  36. 45
  37. 245
  38. 81
  39. 2254
  40. 392

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