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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 97 · 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. 1.13 × 49 =
  2. 2.24 × 99 =
  3. 3.13 × 29 =
  4. 4.5 × 98 =
  5. 5.5 × 49 =
  6. 6.18 × 99 =
  7. 7.16 × 98 =
  8. 8.9 × 29 =
  9. 9.15 × 29 =
  10. 10.5 × 9 =
  11. 11.3 × 49 =
  12. 12.5 × 9 =
  13. 13.15 × 49 =
  14. 14.4 × 9 =
  15. 15.27 × 98 =
  16. 16.11 × 19 =
  17. 17.4 × 19 =
  18. 18.13 × 98 =
  19. 19.3 × 9 =
  20. 20.4 × 19 =
  21. 21.21 × 99 =
  22. 22.13 × 98 =
  23. 23.4 × 98 =
  24. 24.13 × 19 =
  25. 25.15 × 29 =
  26. 26.14 × 29 =
  27. 27.6 × 9 =
  28. 28.10 × 9 =
  29. 29.14 × 98 =
  30. 30.15 × 49 =
  31. 31.12 × 29 =
  32. 32.6 × 9 =
  33. 33.9 × 49 =
  34. 34.13 × 29 =
  35. 35.5 × 49 =
  36. 36.8 × 98 =
  37. 37.4 × 49 =
  38. 38.31 × 98 =
  39. 39.40 × 98 =
  40. 40.9 × 9 =

Answer key

  1. 637
  2. 2376
  3. 377
  4. 490
  5. 245
  6. 1782
  7. 1568
  8. 261
  9. 435
  10. 45
  11. 147
  12. 45
  13. 735
  14. 36
  15. 2646
  16. 209
  17. 76
  18. 1274
  19. 27
  20. 76
  21. 2079
  22. 1274
  23. 392
  24. 247
  25. 435
  26. 406
  27. 54
  28. 90
  29. 1372
  30. 735
  31. 348
  32. 54
  33. 441
  34. 377
  35. 245
  36. 784
  37. 196
  38. 3038
  39. 3920
  40. 81

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