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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 949 · 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. 1.3 × 19 =
  2. 2.8 × 9 =
  3. 3.8 × 98 =
  4. 4.7 × 19 =
  5. 5.9 × 49 =
  6. 6.37 × 98 =
  7. 7.5 × 29 =
  8. 8.3 × 9 =
  9. 9.6 × 9 =
  10. 10.5 × 19 =
  11. 11.4 × 19 =
  12. 12.4 × 29 =
  13. 13.26 × 98 =
  14. 14.11 × 19 =
  15. 15.4 × 9 =
  16. 16.30 × 98 =
  17. 17.15 × 49 =
  18. 18.4 × 98 =
  19. 19.6 × 29 =
  20. 20.23 × 98 =
  21. 21.10 × 9 =
  22. 22.5 × 9 =
  23. 23.10 × 19 =
  24. 24.6 × 99 =
  25. 25.14 × 49 =
  26. 26.5 × 29 =
  27. 27.4 × 29 =
  28. 28.5 × 99 =
  29. 29.3 × 19 =
  30. 30.5 × 9 =
  31. 31.33 × 98 =
  32. 32.5 × 29 =
  33. 33.11 × 49 =
  34. 34.4 × 9 =
  35. 35.9 × 9 =
  36. 36.7 × 29 =
  37. 37.14 × 49 =
  38. 38.13 × 99 =
  39. 39.27 × 99 =
  40. 40.36 × 99 =

Answer key

  1. 57
  2. 72
  3. 784
  4. 133
  5. 441
  6. 3626
  7. 145
  8. 27
  9. 54
  10. 95
  11. 76
  12. 116
  13. 2548
  14. 209
  15. 36
  16. 2940
  17. 735
  18. 392
  19. 174
  20. 2254
  21. 90
  22. 45
  23. 190
  24. 594
  25. 686
  26. 145
  27. 116
  28. 495
  29. 57
  30. 45
  31. 3234
  32. 145
  33. 539
  34. 36
  35. 81
  36. 203
  37. 686
  38. 1287
  39. 2673
  40. 3564

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