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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 764 · 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. 1.9 × 49 =
  2. 2.20 × 99 =
  3. 3.11 × 9 =
  4. 4.6 × 9 =
  5. 5.6 × 9 =
  6. 6.3 × 29 =
  7. 7.29 × 98 =
  8. 8.19 × 99 =
  9. 9.9 × 49 =
  10. 10.7 × 98 =
  11. 11.13 × 49 =
  12. 12.10 × 29 =
  13. 13.16 × 99 =
  14. 14.8 × 49 =
  15. 15.10 × 99 =
  16. 16.4 × 49 =
  17. 17.7 × 19 =
  18. 18.4 × 29 =
  19. 19.4 × 9 =
  20. 20.4 × 29 =
  21. 21.12 × 9 =
  22. 22.35 × 98 =
  23. 23.14 × 29 =
  24. 24.3 × 9 =
  25. 25.3 × 19 =
  26. 26.5 × 99 =
  27. 27.3 × 99 =
  28. 28.7 × 99 =
  29. 29.17 × 98 =
  30. 30.10 × 19 =
  31. 31.5 × 9 =
  32. 32.24 × 98 =
  33. 33.3 × 49 =
  34. 34.28 × 98 =
  35. 35.10 × 9 =
  36. 36.26 × 98 =
  37. 37.8 × 98 =
  38. 38.7 × 19 =
  39. 39.3 × 9 =
  40. 40.7 × 19 =

Answer key

  1. 441
  2. 1980
  3. 99
  4. 54
  5. 54
  6. 87
  7. 2842
  8. 1881
  9. 441
  10. 686
  11. 637
  12. 290
  13. 1584
  14. 392
  15. 990
  16. 196
  17. 133
  18. 116
  19. 36
  20. 116
  21. 108
  22. 3430
  23. 406
  24. 27
  25. 57
  26. 495
  27. 297
  28. 693
  29. 1666
  30. 190
  31. 45
  32. 2352
  33. 147
  34. 2744
  35. 90
  36. 2548
  37. 784
  38. 133
  39. 27
  40. 133

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