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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 316 · 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. 1.28 × 98 =
  2. 2.30 × 99 =
  3. 3.3 × 19 =
  4. 4.10 × 29 =
  5. 5.6 × 19 =
  6. 6.3 × 9 =
  7. 7.8 × 9 =
  8. 8.25 × 98 =
  9. 9.5 × 99 =
  10. 10.15 × 99 =
  11. 11.5 × 9 =
  12. 12.9 × 9 =
  13. 13.19 × 99 =
  14. 14.5 × 19 =
  15. 15.15 × 19 =
  16. 16.11 × 98 =
  17. 17.10 × 9 =
  18. 18.11 × 99 =
  19. 19.10 × 99 =
  20. 20.13 × 29 =
  21. 21.9 × 29 =
  22. 22.3 × 9 =
  23. 23.6 × 49 =
  24. 24.5 × 19 =
  25. 25.5 × 19 =
  26. 26.11 × 19 =
  27. 27.14 × 49 =
  28. 28.8 × 29 =
  29. 29.9 × 49 =
  30. 30.3 × 99 =
  31. 31.6 × 98 =
  32. 32.22 × 98 =
  33. 33.15 × 29 =
  34. 34.15 × 49 =
  35. 35.5 × 49 =
  36. 36.6 × 49 =
  37. 37.5 × 49 =
  38. 38.5 × 9 =
  39. 39.23 × 98 =
  40. 40.9 × 19 =

Answer key

  1. 2744
  2. 2970
  3. 57
  4. 290
  5. 114
  6. 27
  7. 72
  8. 2450
  9. 495
  10. 1485
  11. 45
  12. 81
  13. 1881
  14. 95
  15. 285
  16. 1078
  17. 90
  18. 1089
  19. 990
  20. 377
  21. 261
  22. 27
  23. 294
  24. 95
  25. 95
  26. 209
  27. 686
  28. 232
  29. 441
  30. 297
  31. 588
  32. 2156
  33. 435
  34. 735
  35. 245
  36. 294
  37. 245
  38. 45
  39. 2254
  40. 171

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