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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 963 · 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 × 29 =
  2. 2.7 × 49 =
  3. 3.12 × 29 =
  4. 4.9 × 29 =
  5. 5.9 × 19 =
  6. 6.10 × 9 =
  7. 7.38 × 98 =
  8. 8.8 × 9 =
  9. 9.19 × 98 =
  10. 10.26 × 98 =
  11. 11.26 × 99 =
  12. 12.25 × 99 =
  13. 13.16 × 99 =
  14. 14.4 × 99 =
  15. 15.13 × 99 =
  16. 16.5 × 9 =
  17. 17.28 × 99 =
  18. 18.20 × 99 =
  19. 19.7 × 9 =
  20. 20.5 × 19 =
  21. 21.22 × 99 =
  22. 22.10 × 9 =
  23. 23.24 × 98 =
  24. 24.9 × 9 =
  25. 25.35 × 98 =
  26. 26.10 × 19 =
  27. 27.13 × 9 =
  28. 28.3 × 9 =
  29. 29.10 × 29 =
  30. 30.22 × 98 =
  31. 31.26 × 99 =
  32. 32.15 × 19 =
  33. 33.11 × 29 =
  34. 34.8 × 19 =
  35. 35.11 × 98 =
  36. 36.8 × 19 =
  37. 37.32 × 98 =
  38. 38.10 × 19 =
  39. 39.10 × 49 =
  40. 40.3 × 9 =

Answer key

  1. 377
  2. 343
  3. 348
  4. 261
  5. 171
  6. 90
  7. 3724
  8. 72
  9. 1862
  10. 2548
  11. 2574
  12. 2475
  13. 1584
  14. 396
  15. 1287
  16. 45
  17. 2772
  18. 1980
  19. 63
  20. 95
  21. 2178
  22. 90
  23. 2352
  24. 81
  25. 3430
  26. 190
  27. 117
  28. 27
  29. 290
  30. 2156
  31. 2574
  32. 285
  33. 319
  34. 152
  35. 1078
  36. 152
  37. 3136
  38. 190
  39. 490
  40. 27

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