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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 241 · 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. 1.8 × 49 =
  2. 2.5 × 49 =
  3. 3.26 × 98 =
  4. 4.7 × 9 =
  5. 5.10 × 98 =
  6. 6.19 × 99 =
  7. 7.13 × 98 =
  8. 8.13 × 29 =
  9. 9.29 × 98 =
  10. 10.15 × 49 =
  11. 11.9 × 49 =
  12. 12.7 × 9 =
  13. 13.14 × 19 =
  14. 14.4 × 19 =
  15. 15.9 × 9 =
  16. 16.5 × 9 =
  17. 17.23 × 99 =
  18. 18.5 × 49 =
  19. 19.12 × 9 =
  20. 20.19 × 98 =
  21. 21.13 × 9 =
  22. 22.7 × 49 =
  23. 23.15 × 19 =
  24. 24.5 × 49 =
  25. 25.3 × 9 =
  26. 26.29 × 99 =
  27. 27.6 × 19 =
  28. 28.6 × 9 =
  29. 29.7 × 9 =
  30. 30.31 × 99 =
  31. 31.16 × 99 =
  32. 32.14 × 98 =
  33. 33.19 × 99 =
  34. 34.12 × 29 =
  35. 35.12 × 29 =
  36. 36.7 × 19 =
  37. 37.4 × 19 =
  38. 38.7 × 9 =
  39. 39.11 × 49 =
  40. 40.26 × 98 =

Answer key

  1. 392
  2. 245
  3. 2548
  4. 63
  5. 980
  6. 1881
  7. 1274
  8. 377
  9. 2842
  10. 735
  11. 441
  12. 63
  13. 266
  14. 76
  15. 81
  16. 45
  17. 2277
  18. 245
  19. 108
  20. 1862
  21. 117
  22. 343
  23. 285
  24. 245
  25. 27
  26. 2871
  27. 114
  28. 54
  29. 63
  30. 3069
  31. 1584
  32. 1372
  33. 1881
  34. 348
  35. 348
  36. 133
  37. 76
  38. 63
  39. 539
  40. 2548

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