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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 836 · 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. 1.7 × 9 =
  2. 2.27 × 98 =
  3. 3.15 × 98 =
  4. 4.36 × 99 =
  5. 5.9 × 19 =
  6. 6.28 × 98 =
  7. 7.13 × 19 =
  8. 8.24 × 98 =
  9. 9.9 × 99 =
  10. 10.12 × 49 =
  11. 11.13 × 49 =
  12. 12.40 × 98 =
  13. 13.3 × 19 =
  14. 14.10 × 49 =
  15. 15.22 × 99 =
  16. 16.12 × 99 =
  17. 17.9 × 19 =
  18. 18.6 × 19 =
  19. 19.4 × 29 =
  20. 20.3 × 9 =
  21. 21.4 × 19 =
  22. 22.5 × 9 =
  23. 23.4 × 19 =
  24. 24.22 × 98 =
  25. 25.6 × 19 =
  26. 26.13 × 29 =
  27. 27.14 × 29 =
  28. 28.40 × 98 =
  29. 29.10 × 99 =
  30. 30.31 × 99 =
  31. 31.12 × 19 =
  32. 32.11 × 29 =
  33. 33.13 × 29 =
  34. 34.9 × 19 =
  35. 35.10 × 19 =
  36. 36.11 × 49 =
  37. 37.8 × 29 =
  38. 38.12 × 98 =
  39. 39.14 × 19 =
  40. 40.5 × 9 =

Answer key

  1. 63
  2. 2646
  3. 1470
  4. 3564
  5. 171
  6. 2744
  7. 247
  8. 2352
  9. 891
  10. 588
  11. 637
  12. 3920
  13. 57
  14. 490
  15. 2178
  16. 1188
  17. 171
  18. 114
  19. 116
  20. 27
  21. 76
  22. 45
  23. 76
  24. 2156
  25. 114
  26. 377
  27. 406
  28. 3920
  29. 990
  30. 3069
  31. 228
  32. 319
  33. 377
  34. 171
  35. 190
  36. 539
  37. 232
  38. 1176
  39. 266
  40. 45

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