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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 969 · 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. 1.8 × 19 =
  2. 2.12 × 9 =
  3. 3.3 × 98 =
  4. 4.4 × 98 =
  5. 5.21 × 99 =
  6. 6.5 × 9 =
  7. 7.9 × 9 =
  8. 8.3 × 9 =
  9. 9.13 × 19 =
  10. 10.9 × 49 =
  11. 11.9 × 9 =
  12. 12.11 × 99 =
  13. 13.11 × 98 =
  14. 14.9 × 99 =
  15. 15.9 × 49 =
  16. 16.3 × 49 =
  17. 17.4 × 98 =
  18. 18.10 × 98 =
  19. 19.4 × 29 =
  20. 20.8 × 9 =
  21. 21.9 × 29 =
  22. 22.13 × 49 =
  23. 23.11 × 98 =
  24. 24.40 × 98 =
  25. 25.15 × 99 =
  26. 26.14 × 9 =
  27. 27.11 × 98 =
  28. 28.11 × 99 =
  29. 29.6 × 49 =
  30. 30.8 × 9 =
  31. 31.8 × 19 =
  32. 32.5 × 29 =
  33. 33.15 × 19 =
  34. 34.13 × 29 =
  35. 35.38 × 98 =
  36. 36.4 × 9 =
  37. 37.6 × 19 =
  38. 38.13 × 99 =
  39. 39.15 × 49 =
  40. 40.14 × 9 =

Answer key

  1. 152
  2. 108
  3. 294
  4. 392
  5. 2079
  6. 45
  7. 81
  8. 27
  9. 247
  10. 441
  11. 81
  12. 1089
  13. 1078
  14. 891
  15. 441
  16. 147
  17. 392
  18. 980
  19. 116
  20. 72
  21. 261
  22. 637
  23. 1078
  24. 3920
  25. 1485
  26. 126
  27. 1078
  28. 1089
  29. 294
  30. 72
  31. 152
  32. 145
  33. 285
  34. 377
  35. 3724
  36. 36
  37. 114
  38. 1287
  39. 735
  40. 126

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