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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 35 · 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. 1.9 × 19 =
  2. 2.5 × 19 =
  3. 3.15 × 9 =
  4. 4.5 × 19 =
  5. 5.13 × 9 =
  6. 6.12 × 49 =
  7. 7.14 × 19 =
  8. 8.6 × 19 =
  9. 9.10 × 19 =
  10. 10.9 × 19 =
  11. 11.10 × 9 =
  12. 12.8 × 29 =
  13. 13.9 × 19 =
  14. 14.4 × 9 =
  15. 15.6 × 19 =
  16. 16.5 × 19 =
  17. 17.15 × 98 =
  18. 18.7 × 49 =
  19. 19.6 × 9 =
  20. 20.6 × 99 =
  21. 21.13 × 19 =
  22. 22.13 × 49 =
  23. 23.30 × 99 =
  24. 24.11 × 29 =
  25. 25.17 × 99 =
  26. 26.11 × 9 =
  27. 27.7 × 49 =
  28. 28.15 × 99 =
  29. 29.38 × 98 =
  30. 30.36 × 99 =
  31. 31.12 × 29 =
  32. 32.5 × 9 =
  33. 33.5 × 19 =
  34. 34.13 × 9 =
  35. 35.5 × 29 =
  36. 36.35 × 98 =
  37. 37.7 × 19 =
  38. 38.15 × 29 =
  39. 39.10 × 29 =
  40. 40.10 × 9 =

Answer key

  1. 171
  2. 95
  3. 135
  4. 95
  5. 117
  6. 588
  7. 266
  8. 114
  9. 190
  10. 171
  11. 90
  12. 232
  13. 171
  14. 36
  15. 114
  16. 95
  17. 1470
  18. 343
  19. 54
  20. 594
  21. 247
  22. 637
  23. 2970
  24. 319
  25. 1683
  26. 99
  27. 343
  28. 1485
  29. 3724
  30. 3564
  31. 348
  32. 45
  33. 95
  34. 117
  35. 145
  36. 3430
  37. 133
  38. 435
  39. 290
  40. 90

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