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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 452 · 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 × 19 =
  2. 2.26 × 98 =
  3. 3.15 × 19 =
  4. 4.11 × 49 =
  5. 5.7 × 98 =
  6. 6.4 × 9 =
  7. 7.7 × 19 =
  8. 8.3 × 19 =
  9. 9.5 × 29 =
  10. 10.11 × 29 =
  11. 11.15 × 99 =
  12. 12.9 × 9 =
  13. 13.39 × 99 =
  14. 14.3 × 19 =
  15. 15.40 × 99 =
  16. 16.10 × 9 =
  17. 17.27 × 99 =
  18. 18.19 × 98 =
  19. 19.3 × 29 =
  20. 20.18 × 99 =
  21. 21.6 × 9 =
  22. 22.33 × 99 =
  23. 23.12 × 19 =
  24. 24.33 × 98 =
  25. 25.6 × 19 =
  26. 26.7 × 19 =
  27. 27.4 × 9 =
  28. 28.8 × 29 =
  29. 29.12 × 29 =
  30. 30.6 × 9 =
  31. 31.10 × 98 =
  32. 32.14 × 49 =
  33. 33.14 × 19 =
  34. 34.6 × 98 =
  35. 35.5 × 19 =
  36. 36.6 × 19 =
  37. 37.10 × 19 =
  38. 38.13 × 9 =
  39. 39.11 × 9 =
  40. 40.13 × 19 =

Answer key

  1. 247
  2. 2548
  3. 285
  4. 539
  5. 686
  6. 36
  7. 133
  8. 57
  9. 145
  10. 319
  11. 1485
  12. 81
  13. 3861
  14. 57
  15. 3960
  16. 90
  17. 2673
  18. 1862
  19. 87
  20. 1782
  21. 54
  22. 3267
  23. 228
  24. 3234
  25. 114
  26. 133
  27. 36
  28. 232
  29. 348
  30. 54
  31. 980
  32. 686
  33. 266
  34. 588
  35. 95
  36. 114
  37. 190
  38. 117
  39. 99
  40. 247

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