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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 495 · 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. 1.12 × 9 =
  2. 2.39 × 98 =
  3. 3.14 × 29 =
  4. 4.4 × 19 =
  5. 5.14 × 29 =
  6. 6.21 × 98 =
  7. 7.29 × 99 =
  8. 8.5 × 49 =
  9. 9.3 × 9 =
  10. 10.7 × 9 =
  11. 11.32 × 98 =
  12. 12.4 × 29 =
  13. 13.7 × 19 =
  14. 14.39 × 99 =
  15. 15.10 × 29 =
  16. 16.3 × 9 =
  17. 17.4 × 49 =
  18. 18.5 × 49 =
  19. 19.15 × 19 =
  20. 20.26 × 99 =
  21. 21.19 × 99 =
  22. 22.10 × 9 =
  23. 23.11 × 29 =
  24. 24.8 × 19 =
  25. 25.8 × 98 =
  26. 26.5 × 19 =
  27. 27.4 × 98 =
  28. 28.16 × 98 =
  29. 29.19 × 99 =
  30. 30.11 × 19 =
  31. 31.12 × 99 =
  32. 32.3 × 99 =
  33. 33.10 × 29 =
  34. 34.25 × 99 =
  35. 35.5 × 29 =
  36. 36.16 × 98 =
  37. 37.10 × 29 =
  38. 38.15 × 29 =
  39. 39.4 × 98 =
  40. 40.14 × 9 =

Answer key

  1. 108
  2. 3822
  3. 406
  4. 76
  5. 406
  6. 2058
  7. 2871
  8. 245
  9. 27
  10. 63
  11. 3136
  12. 116
  13. 133
  14. 3861
  15. 290
  16. 27
  17. 196
  18. 245
  19. 285
  20. 2574
  21. 1881
  22. 90
  23. 319
  24. 152
  25. 784
  26. 95
  27. 392
  28. 1568
  29. 1881
  30. 209
  31. 1188
  32. 297
  33. 290
  34. 2475
  35. 145
  36. 1568
  37. 290
  38. 435
  39. 392
  40. 126

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