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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 76 · 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. 2.4 × 19 =
  3. 3.20 × 99 =
  4. 4.14 × 98 =
  5. 5.3 × 19 =
  6. 6.8 × 49 =
  7. 7.15 × 49 =
  8. 8.18 × 98 =
  9. 9.12 × 99 =
  10. 10.5 × 99 =
  11. 11.3 × 29 =
  12. 12.21 × 99 =
  13. 13.13 × 19 =
  14. 14.13 × 19 =
  15. 15.4 × 19 =
  16. 16.19 × 98 =
  17. 17.9 × 29 =
  18. 18.5 × 19 =
  19. 19.21 × 99 =
  20. 20.15 × 19 =
  21. 21.13 × 29 =
  22. 22.11 × 19 =
  23. 23.11 × 19 =
  24. 24.10 × 49 =
  25. 25.4 × 19 =
  26. 26.17 × 99 =
  27. 27.11 × 49 =
  28. 28.21 × 98 =
  29. 29.15 × 19 =
  30. 30.10 × 49 =
  31. 31.4 × 19 =
  32. 32.3 × 9 =
  33. 33.5 × 9 =
  34. 34.11 × 99 =
  35. 35.14 × 19 =
  36. 36.7 × 29 =
  37. 37.12 × 19 =
  38. 38.40 × 98 =
  39. 39.3 × 98 =
  40. 40.8 × 9 =

Answer key

  1. 637
  2. 76
  3. 1980
  4. 1372
  5. 57
  6. 392
  7. 735
  8. 1764
  9. 1188
  10. 495
  11. 87
  12. 2079
  13. 247
  14. 247
  15. 76
  16. 1862
  17. 261
  18. 95
  19. 2079
  20. 285
  21. 377
  22. 209
  23. 209
  24. 490
  25. 76
  26. 1683
  27. 539
  28. 2058
  29. 285
  30. 490
  31. 76
  32. 27
  33. 45
  34. 1089
  35. 266
  36. 203
  37. 228
  38. 3920
  39. 294
  40. 72

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