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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 962 · 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 × 9 =
  2. 2.10 × 29 =
  3. 3.7 × 19 =
  4. 4.3 × 49 =
  5. 5.6 × 49 =
  6. 6.14 × 49 =
  7. 7.12 × 9 =
  8. 8.3 × 9 =
  9. 9.3 × 9 =
  10. 10.15 × 9 =
  11. 11.13 × 49 =
  12. 12.8 × 98 =
  13. 13.3 × 19 =
  14. 14.8 × 9 =
  15. 15.9 × 99 =
  16. 16.3 × 98 =
  17. 17.3 × 98 =
  18. 18.9 × 29 =
  19. 19.6 × 19 =
  20. 20.4 × 29 =
  21. 21.12 × 19 =
  22. 22.6 × 49 =
  23. 23.5 × 49 =
  24. 24.7 × 98 =
  25. 25.13 × 98 =
  26. 26.15 × 9 =
  27. 27.40 × 99 =
  28. 28.10 × 98 =
  29. 29.9 × 9 =
  30. 30.7 × 19 =
  31. 31.32 × 98 =
  32. 32.13 × 98 =
  33. 33.10 × 29 =
  34. 34.10 × 9 =
  35. 35.10 × 49 =
  36. 36.3 × 49 =
  37. 37.15 × 98 =
  38. 38.15 × 49 =
  39. 39.25 × 98 =
  40. 40.26 × 99 =

Answer key

  1. 135
  2. 290
  3. 133
  4. 147
  5. 294
  6. 686
  7. 108
  8. 27
  9. 27
  10. 135
  11. 637
  12. 784
  13. 57
  14. 72
  15. 891
  16. 294
  17. 294
  18. 261
  19. 114
  20. 116
  21. 228
  22. 294
  23. 245
  24. 686
  25. 1274
  26. 135
  27. 3960
  28. 980
  29. 81
  30. 133
  31. 3136
  32. 1274
  33. 290
  34. 90
  35. 490
  36. 147
  37. 1470
  38. 735
  39. 2450
  40. 2574

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