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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 387 · 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. 1.3 × 19 =
  2. 2.33 × 98 =
  3. 3.4 × 19 =
  4. 4.3 × 19 =
  5. 5.33 × 99 =
  6. 6.8 × 98 =
  7. 7.39 × 98 =
  8. 8.12 × 19 =
  9. 9.7 × 9 =
  10. 10.12 × 9 =
  11. 11.26 × 99 =
  12. 12.6 × 9 =
  13. 13.3 × 9 =
  14. 14.40 × 99 =
  15. 15.18 × 99 =
  16. 16.9 × 19 =
  17. 17.14 × 19 =
  18. 18.5 × 9 =
  19. 19.18 × 99 =
  20. 20.10 × 9 =
  21. 21.6 × 29 =
  22. 22.7 × 29 =
  23. 23.6 × 19 =
  24. 24.7 × 9 =
  25. 25.8 × 29 =
  26. 26.14 × 29 =
  27. 27.5 × 99 =
  28. 28.5 × 9 =
  29. 29.23 × 98 =
  30. 30.5 × 9 =
  31. 31.3 × 19 =
  32. 32.8 × 29 =
  33. 33.4 × 9 =
  34. 34.21 × 98 =
  35. 35.6 × 29 =
  36. 36.17 × 98 =
  37. 37.7 × 29 =
  38. 38.4 × 9 =
  39. 39.5 × 9 =
  40. 40.15 × 19 =

Answer key

  1. 57
  2. 3234
  3. 76
  4. 57
  5. 3267
  6. 784
  7. 3822
  8. 228
  9. 63
  10. 108
  11. 2574
  12. 54
  13. 27
  14. 3960
  15. 1782
  16. 171
  17. 266
  18. 45
  19. 1782
  20. 90
  21. 174
  22. 203
  23. 114
  24. 63
  25. 232
  26. 406
  27. 495
  28. 45
  29. 2254
  30. 45
  31. 57
  32. 232
  33. 36
  34. 2058
  35. 174
  36. 1666
  37. 203
  38. 36
  39. 45
  40. 285

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