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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 643 · 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. 1.6 × 98 =
  2. 2.5 × 19 =
  3. 3.11 × 9 =
  4. 4.9 × 9 =
  5. 5.6 × 19 =
  6. 6.7 × 49 =
  7. 7.5 × 29 =
  8. 8.4 × 9 =
  9. 9.3 × 9 =
  10. 10.3 × 19 =
  11. 11.6 × 29 =
  12. 12.27 × 98 =
  13. 13.3 × 98 =
  14. 14.5 × 49 =
  15. 15.8 × 49 =
  16. 16.15 × 98 =
  17. 17.32 × 99 =
  18. 18.28 × 99 =
  19. 19.39 × 98 =
  20. 20.8 × 29 =
  21. 21.13 × 29 =
  22. 22.7 × 9 =
  23. 23.8 × 9 =
  24. 24.25 × 98 =
  25. 25.14 × 29 =
  26. 26.11 × 29 =
  27. 27.9 × 9 =
  28. 28.6 × 19 =
  29. 29.40 × 99 =
  30. 30.9 × 9 =
  31. 31.11 × 19 =
  32. 32.6 × 49 =
  33. 33.5 × 99 =
  34. 34.33 × 98 =
  35. 35.9 × 19 =
  36. 36.13 × 19 =
  37. 37.13 × 9 =
  38. 38.12 × 19 =
  39. 39.5 × 9 =
  40. 40.40 × 99 =

Answer key

  1. 588
  2. 95
  3. 99
  4. 81
  5. 114
  6. 343
  7. 145
  8. 36
  9. 27
  10. 57
  11. 174
  12. 2646
  13. 294
  14. 245
  15. 392
  16. 1470
  17. 3168
  18. 2772
  19. 3822
  20. 232
  21. 377
  22. 63
  23. 72
  24. 2450
  25. 406
  26. 319
  27. 81
  28. 114
  29. 3960
  30. 81
  31. 209
  32. 294
  33. 495
  34. 3234
  35. 171
  36. 247
  37. 117
  38. 228
  39. 45
  40. 3960

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