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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 484 · 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. 1.13 × 19 =
  2. 2.14 × 9 =
  3. 3.13 × 49 =
  4. 4.4 × 19 =
  5. 5.10 × 9 =
  6. 6.12 × 29 =
  7. 7.11 × 49 =
  8. 8.4 × 49 =
  9. 9.14 × 98 =
  10. 10.12 × 9 =
  11. 11.9 × 49 =
  12. 12.14 × 19 =
  13. 13.14 × 9 =
  14. 14.29 × 99 =
  15. 15.4 × 9 =
  16. 16.36 × 98 =
  17. 17.12 × 49 =
  18. 18.9 × 9 =
  19. 19.5 × 29 =
  20. 20.12 × 9 =
  21. 21.11 × 99 =
  22. 22.26 × 98 =
  23. 23.9 × 19 =
  24. 24.6 × 49 =
  25. 25.11 × 9 =
  26. 26.13 × 99 =
  27. 27.10 × 99 =
  28. 28.3 × 19 =
  29. 29.8 × 9 =
  30. 30.3 × 9 =
  31. 31.5 × 49 =
  32. 32.22 × 99 =
  33. 33.7 × 19 =
  34. 34.18 × 98 =
  35. 35.7 × 49 =
  36. 36.12 × 19 =
  37. 37.9 × 19 =
  38. 38.34 × 98 =
  39. 39.4 × 19 =
  40. 40.34 × 99 =

Answer key

  1. 247
  2. 126
  3. 637
  4. 76
  5. 90
  6. 348
  7. 539
  8. 196
  9. 1372
  10. 108
  11. 441
  12. 266
  13. 126
  14. 2871
  15. 36
  16. 3528
  17. 588
  18. 81
  19. 145
  20. 108
  21. 1089
  22. 2548
  23. 171
  24. 294
  25. 99
  26. 1287
  27. 990
  28. 57
  29. 72
  30. 27
  31. 245
  32. 2178
  33. 133
  34. 1764
  35. 343
  36. 228
  37. 171
  38. 3332
  39. 76
  40. 3366

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