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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 58 · 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. 1.12 × 9 =
  2. 2.14 × 19 =
  3. 3.3 × 29 =
  4. 4.9 × 49 =
  5. 5.35 × 99 =
  6. 6.3 × 9 =
  7. 7.3 × 29 =
  8. 8.5 × 19 =
  9. 9.8 × 9 =
  10. 10.24 × 99 =
  11. 11.3 × 29 =
  12. 12.4 × 19 =
  13. 13.23 × 99 =
  14. 14.7 × 9 =
  15. 15.6 × 9 =
  16. 16.38 × 99 =
  17. 17.4 × 19 =
  18. 18.14 × 9 =
  19. 19.3 × 19 =
  20. 20.20 × 99 =
  21. 21.15 × 19 =
  22. 22.30 × 98 =
  23. 23.5 × 49 =
  24. 24.10 × 29 =
  25. 25.4 × 9 =
  26. 26.8 × 29 =
  27. 27.14 × 99 =
  28. 28.12 × 9 =
  29. 29.4 × 99 =
  30. 30.28 × 99 =
  31. 31.12 × 29 =
  32. 32.13 × 9 =
  33. 33.11 × 29 =
  34. 34.14 × 19 =
  35. 35.6 × 19 =
  36. 36.3 × 9 =
  37. 37.6 × 9 =
  38. 38.25 × 98 =
  39. 39.24 × 99 =
  40. 40.3 × 9 =

Answer key

  1. 108
  2. 266
  3. 87
  4. 441
  5. 3465
  6. 27
  7. 87
  8. 95
  9. 72
  10. 2376
  11. 87
  12. 76
  13. 2277
  14. 63
  15. 54
  16. 3762
  17. 76
  18. 126
  19. 57
  20. 1980
  21. 285
  22. 2940
  23. 245
  24. 290
  25. 36
  26. 232
  27. 1386
  28. 108
  29. 396
  30. 2772
  31. 348
  32. 117
  33. 319
  34. 266
  35. 114
  36. 27
  37. 54
  38. 2450
  39. 2376
  40. 27

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