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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 903 · 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. 1.5 × 49 =
  2. 2.7 × 9 =
  3. 3.32 × 99 =
  4. 4.4 × 49 =
  5. 5.4 × 99 =
  6. 6.29 × 98 =
  7. 7.6 × 29 =
  8. 8.14 × 29 =
  9. 9.14 × 29 =
  10. 10.5 × 19 =
  11. 11.15 × 29 =
  12. 12.8 × 9 =
  13. 13.6 × 19 =
  14. 14.14 × 99 =
  15. 15.3 × 19 =
  16. 16.5 × 19 =
  17. 17.5 × 9 =
  18. 18.9 × 98 =
  19. 19.7 × 19 =
  20. 20.4 × 98 =
  21. 21.9 × 98 =
  22. 22.3 × 29 =
  23. 23.10 × 49 =
  24. 24.28 × 98 =
  25. 25.8 × 19 =
  26. 26.11 × 49 =
  27. 27.3 × 29 =
  28. 28.22 × 99 =
  29. 29.31 × 99 =
  30. 30.6 × 29 =
  31. 31.6 × 49 =
  32. 32.12 × 9 =
  33. 33.13 × 29 =
  34. 34.20 × 99 =
  35. 35.11 × 49 =
  36. 36.8 × 49 =
  37. 37.6 × 19 =
  38. 38.8 × 19 =
  39. 39.3 × 19 =
  40. 40.14 × 19 =

Answer key

  1. 245
  2. 63
  3. 3168
  4. 196
  5. 396
  6. 2842
  7. 174
  8. 406
  9. 406
  10. 95
  11. 435
  12. 72
  13. 114
  14. 1386
  15. 57
  16. 95
  17. 45
  18. 882
  19. 133
  20. 392
  21. 882
  22. 87
  23. 490
  24. 2744
  25. 152
  26. 539
  27. 87
  28. 2178
  29. 3069
  30. 174
  31. 294
  32. 108
  33. 377
  34. 1980
  35. 539
  36. 392
  37. 114
  38. 152
  39. 57
  40. 266

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