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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 673 · 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. 1.5 × 9 =
  2. 2.33 × 98 =
  3. 3.18 × 98 =
  4. 4.14 × 29 =
  5. 5.34 × 99 =
  6. 6.5 × 19 =
  7. 7.4 × 9 =
  8. 8.14 × 9 =
  9. 9.7 × 29 =
  10. 10.3 × 29 =
  11. 11.4 × 19 =
  12. 12.7 × 9 =
  13. 13.5 × 19 =
  14. 14.3 × 19 =
  15. 15.12 × 9 =
  16. 16.10 × 9 =
  17. 17.3 × 29 =
  18. 18.3 × 9 =
  19. 19.6 × 49 =
  20. 20.5 × 98 =
  21. 21.28 × 99 =
  22. 22.11 × 29 =
  23. 23.10 × 19 =
  24. 24.4 × 19 =
  25. 25.3 × 49 =
  26. 26.12 × 9 =
  27. 27.14 × 9 =
  28. 28.5 × 9 =
  29. 29.25 × 99 =
  30. 30.14 × 19 =
  31. 31.4 × 98 =
  32. 32.10 × 19 =
  33. 33.6 × 19 =
  34. 34.26 × 98 =
  35. 35.6 × 99 =
  36. 36.5 × 98 =
  37. 37.15 × 29 =
  38. 38.10 × 49 =
  39. 39.23 × 99 =
  40. 40.21 × 98 =

Answer key

  1. 45
  2. 3234
  3. 1764
  4. 406
  5. 3366
  6. 95
  7. 36
  8. 126
  9. 203
  10. 87
  11. 76
  12. 63
  13. 95
  14. 57
  15. 108
  16. 90
  17. 87
  18. 27
  19. 294
  20. 490
  21. 2772
  22. 319
  23. 190
  24. 76
  25. 147
  26. 108
  27. 126
  28. 45
  29. 2475
  30. 266
  31. 392
  32. 190
  33. 114
  34. 2548
  35. 594
  36. 490
  37. 435
  38. 490
  39. 2277
  40. 2058

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