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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 430 · 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. 1.10 × 29 =
  2. 2.3 × 29 =
  3. 3.7 × 9 =
  4. 4.14 × 49 =
  5. 5.3 × 19 =
  6. 6.39 × 98 =
  7. 7.5 × 49 =
  8. 8.13 × 19 =
  9. 9.5 × 29 =
  10. 10.3 × 49 =
  11. 11.3 × 99 =
  12. 12.9 × 29 =
  13. 13.15 × 9 =
  14. 14.9 × 49 =
  15. 15.36 × 98 =
  16. 16.5 × 19 =
  17. 17.19 × 99 =
  18. 18.14 × 29 =
  19. 19.5 × 19 =
  20. 20.40 × 98 =
  21. 21.20 × 99 =
  22. 22.12 × 29 =
  23. 23.14 × 29 =
  24. 24.6 × 29 =
  25. 25.7 × 98 =
  26. 26.9 × 29 =
  27. 27.13 × 49 =
  28. 28.5 × 19 =
  29. 29.13 × 9 =
  30. 30.5 × 9 =
  31. 31.6 × 49 =
  32. 32.4 × 99 =
  33. 33.25 × 99 =
  34. 34.4 × 19 =
  35. 35.3 × 49 =
  36. 36.31 × 98 =
  37. 37.4 × 49 =
  38. 38.38 × 98 =
  39. 39.12 × 49 =
  40. 40.12 × 9 =

Answer key

  1. 290
  2. 87
  3. 63
  4. 686
  5. 57
  6. 3822
  7. 245
  8. 247
  9. 145
  10. 147
  11. 297
  12. 261
  13. 135
  14. 441
  15. 3528
  16. 95
  17. 1881
  18. 406
  19. 95
  20. 3920
  21. 1980
  22. 348
  23. 406
  24. 174
  25. 686
  26. 261
  27. 637
  28. 95
  29. 117
  30. 45
  31. 294
  32. 396
  33. 2475
  34. 76
  35. 147
  36. 3038
  37. 196
  38. 3724
  39. 588
  40. 108

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