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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 942 · 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. 1.34 × 99 =
  2. 2.28 × 99 =
  3. 3.12 × 9 =
  4. 4.22 × 99 =
  5. 5.4 × 9 =
  6. 6.4 × 9 =
  7. 7.3 × 49 =
  8. 8.3 × 29 =
  9. 9.4 × 19 =
  10. 10.6 × 49 =
  11. 11.6 × 9 =
  12. 12.7 × 9 =
  13. 13.6 × 49 =
  14. 14.11 × 19 =
  15. 15.8 × 29 =
  16. 16.3 × 49 =
  17. 17.36 × 99 =
  18. 18.12 × 29 =
  19. 19.9 × 29 =
  20. 20.40 × 98 =
  21. 21.12 × 29 =
  22. 22.14 × 98 =
  23. 23.3 × 19 =
  24. 24.13 × 49 =
  25. 25.9 × 98 =
  26. 26.4 × 19 =
  27. 27.3 × 9 =
  28. 28.14 × 19 =
  29. 29.4 × 29 =
  30. 30.9 × 9 =
  31. 31.9 × 99 =
  32. 32.11 × 9 =
  33. 33.5 × 9 =
  34. 34.9 × 19 =
  35. 35.6 × 99 =
  36. 36.11 × 9 =
  37. 37.6 × 49 =
  38. 38.14 × 9 =
  39. 39.27 × 99 =
  40. 40.14 × 49 =

Answer key

  1. 3366
  2. 2772
  3. 108
  4. 2178
  5. 36
  6. 36
  7. 147
  8. 87
  9. 76
  10. 294
  11. 54
  12. 63
  13. 294
  14. 209
  15. 232
  16. 147
  17. 3564
  18. 348
  19. 261
  20. 3920
  21. 348
  22. 1372
  23. 57
  24. 637
  25. 882
  26. 76
  27. 27
  28. 266
  29. 116
  30. 81
  31. 891
  32. 99
  33. 45
  34. 171
  35. 594
  36. 99
  37. 294
  38. 126
  39. 2673
  40. 686

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