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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 704 · 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 × 9 =
  2. 2.11 × 49 =
  3. 3.9 × 49 =
  4. 4.14 × 29 =
  5. 5.22 × 99 =
  6. 6.10 × 29 =
  7. 7.15 × 9 =
  8. 8.15 × 29 =
  9. 9.12 × 19 =
  10. 10.7 × 9 =
  11. 11.7 × 98 =
  12. 12.8 × 99 =
  13. 13.40 × 98 =
  14. 14.5 × 9 =
  15. 15.7 × 29 =
  16. 16.28 × 99 =
  17. 17.6 × 9 =
  18. 18.4 × 9 =
  19. 19.30 × 99 =
  20. 20.9 × 49 =
  21. 21.33 × 99 =
  22. 22.19 × 98 =
  23. 23.12 × 19 =
  24. 24.26 × 99 =
  25. 25.8 × 29 =
  26. 26.23 × 99 =
  27. 27.14 × 29 =
  28. 28.15 × 9 =
  29. 29.40 × 99 =
  30. 30.12 × 9 =
  31. 31.6 × 19 =
  32. 32.10 × 98 =
  33. 33.15 × 49 =
  34. 34.25 × 98 =
  35. 35.14 × 19 =
  36. 36.19 × 99 =
  37. 37.32 × 99 =
  38. 38.28 × 99 =
  39. 39.33 × 99 =
  40. 40.14 × 99 =

Answer key

  1. 117
  2. 539
  3. 441
  4. 406
  5. 2178
  6. 290
  7. 135
  8. 435
  9. 228
  10. 63
  11. 686
  12. 792
  13. 3920
  14. 45
  15. 203
  16. 2772
  17. 54
  18. 36
  19. 2970
  20. 441
  21. 3267
  22. 1862
  23. 228
  24. 2574
  25. 232
  26. 2277
  27. 406
  28. 135
  29. 3960
  30. 108
  31. 114
  32. 980
  33. 735
  34. 2450
  35. 266
  36. 1881
  37. 3168
  38. 2772
  39. 3267
  40. 1386

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