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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 95 · 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. 1.7 × 49 =
  2. 2.14 × 29 =
  3. 3.13 × 19 =
  4. 4.14 × 29 =
  5. 5.13 × 99 =
  6. 6.4 × 29 =
  7. 7.5 × 99 =
  8. 8.14 × 9 =
  9. 9.9 × 9 =
  10. 10.18 × 98 =
  11. 11.4 × 98 =
  12. 12.6 × 29 =
  13. 13.12 × 29 =
  14. 14.9 × 9 =
  15. 15.5 × 49 =
  16. 16.5 × 9 =
  17. 17.10 × 19 =
  18. 18.31 × 98 =
  19. 19.3 × 19 =
  20. 20.9 × 19 =
  21. 21.29 × 99 =
  22. 22.4 × 49 =
  23. 23.6 × 29 =
  24. 24.26 × 98 =
  25. 25.9 × 98 =
  26. 26.24 × 98 =
  27. 27.13 × 98 =
  28. 28.38 × 99 =
  29. 29.12 × 19 =
  30. 30.35 × 98 =
  31. 31.6 × 29 =
  32. 32.7 × 49 =
  33. 33.9 × 49 =
  34. 34.11 × 49 =
  35. 35.15 × 29 =
  36. 36.4 × 49 =
  37. 37.6 × 9 =
  38. 38.8 × 49 =
  39. 39.7 × 19 =
  40. 40.6 × 19 =

Answer key

  1. 343
  2. 406
  3. 247
  4. 406
  5. 1287
  6. 116
  7. 495
  8. 126
  9. 81
  10. 1764
  11. 392
  12. 174
  13. 348
  14. 81
  15. 245
  16. 45
  17. 190
  18. 3038
  19. 57
  20. 171
  21. 2871
  22. 196
  23. 174
  24. 2548
  25. 882
  26. 2352
  27. 1274
  28. 3762
  29. 228
  30. 3430
  31. 174
  32. 343
  33. 441
  34. 539
  35. 435
  36. 196
  37. 54
  38. 392
  39. 133
  40. 114

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