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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 852 · 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 × 9 =
  2. 2.19 × 98 =
  3. 3.5 × 49 =
  4. 4.18 × 99 =
  5. 5.9 × 19 =
  6. 6.13 × 49 =
  7. 7.17 × 99 =
  8. 8.11 × 29 =
  9. 9.33 × 99 =
  10. 10.8 × 9 =
  11. 11.10 × 19 =
  12. 12.12 × 49 =
  13. 13.3 × 9 =
  14. 14.3 × 9 =
  15. 15.6 × 98 =
  16. 16.14 × 29 =
  17. 17.7 × 9 =
  18. 18.5 × 9 =
  19. 19.11 × 19 =
  20. 20.6 × 9 =
  21. 21.8 × 29 =
  22. 22.4 × 49 =
  23. 23.12 × 19 =
  24. 24.8 × 29 =
  25. 25.11 × 29 =
  26. 26.13 × 9 =
  27. 27.7 × 99 =
  28. 28.12 × 49 =
  29. 29.15 × 29 =
  30. 30.7 × 9 =
  31. 31.4 × 29 =
  32. 32.13 × 49 =
  33. 33.8 × 9 =
  34. 34.20 × 99 =
  35. 35.11 × 49 =
  36. 36.4 × 49 =
  37. 37.13 × 99 =
  38. 38.10 × 19 =
  39. 39.15 × 19 =
  40. 40.11 × 49 =

Answer key

  1. 63
  2. 1862
  3. 245
  4. 1782
  5. 171
  6. 637
  7. 1683
  8. 319
  9. 3267
  10. 72
  11. 190
  12. 588
  13. 27
  14. 27
  15. 588
  16. 406
  17. 63
  18. 45
  19. 209
  20. 54
  21. 232
  22. 196
  23. 228
  24. 232
  25. 319
  26. 117
  27. 693
  28. 588
  29. 435
  30. 63
  31. 116
  32. 637
  33. 72
  34. 1980
  35. 539
  36. 196
  37. 1287
  38. 190
  39. 285
  40. 539

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