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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 403 · 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. 1.7 × 49 =
  2. 2.25 × 99 =
  3. 3.29 × 99 =
  4. 4.9 × 49 =
  5. 5.12 × 99 =
  6. 6.12 × 19 =
  7. 7.28 × 98 =
  8. 8.11 × 49 =
  9. 9.5 × 19 =
  10. 10.11 × 9 =
  11. 11.14 × 19 =
  12. 12.4 × 49 =
  13. 13.39 × 98 =
  14. 14.12 × 9 =
  15. 15.6 × 98 =
  16. 16.9 × 49 =
  17. 17.11 × 19 =
  18. 18.19 × 98 =
  19. 19.3 × 49 =
  20. 20.11 × 49 =
  21. 21.14 × 29 =
  22. 22.3 × 49 =
  23. 23.9 × 99 =
  24. 24.15 × 29 =
  25. 25.8 × 29 =
  26. 26.13 × 9 =
  27. 27.10 × 9 =
  28. 28.11 × 9 =
  29. 29.12 × 19 =
  30. 30.14 × 29 =
  31. 31.4 × 9 =
  32. 32.6 × 49 =
  33. 33.4 × 99 =
  34. 34.10 × 9 =
  35. 35.4 × 19 =
  36. 36.4 × 49 =
  37. 37.11 × 19 =
  38. 38.7 × 98 =
  39. 39.19 × 98 =
  40. 40.15 × 9 =

Answer key

  1. 343
  2. 2475
  3. 2871
  4. 441
  5. 1188
  6. 228
  7. 2744
  8. 539
  9. 95
  10. 99
  11. 266
  12. 196
  13. 3822
  14. 108
  15. 588
  16. 441
  17. 209
  18. 1862
  19. 147
  20. 539
  21. 406
  22. 147
  23. 891
  24. 435
  25. 232
  26. 117
  27. 90
  28. 99
  29. 228
  30. 406
  31. 36
  32. 294
  33. 396
  34. 90
  35. 76
  36. 196
  37. 209
  38. 686
  39. 1862
  40. 135

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