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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 993 · 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. 1.4 × 19 =
  2. 2.20 × 99 =
  3. 3.3 × 49 =
  4. 4.4 × 49 =
  5. 5.10 × 99 =
  6. 6.6 × 9 =
  7. 7.9 × 19 =
  8. 8.18 × 99 =
  9. 9.12 × 9 =
  10. 10.25 × 98 =
  11. 11.7 × 19 =
  12. 12.11 × 9 =
  13. 13.8 × 19 =
  14. 14.28 × 99 =
  15. 15.19 × 99 =
  16. 16.9 × 19 =
  17. 17.17 × 99 =
  18. 18.6 × 49 =
  19. 19.21 × 99 =
  20. 20.5 × 9 =
  21. 21.12 × 19 =
  22. 22.7 × 99 =
  23. 23.3 × 9 =
  24. 24.11 × 19 =
  25. 25.5 × 49 =
  26. 26.8 × 19 =
  27. 27.3 × 29 =
  28. 28.13 × 29 =
  29. 29.10 × 49 =
  30. 30.32 × 99 =
  31. 31.7 × 99 =
  32. 32.10 × 29 =
  33. 33.8 × 98 =
  34. 34.5 × 9 =
  35. 35.4 × 49 =
  36. 36.12 × 9 =
  37. 37.3 × 9 =
  38. 38.30 × 99 =
  39. 39.10 × 19 =
  40. 40.11 × 49 =

Answer key

  1. 76
  2. 1980
  3. 147
  4. 196
  5. 990
  6. 54
  7. 171
  8. 1782
  9. 108
  10. 2450
  11. 133
  12. 99
  13. 152
  14. 2772
  15. 1881
  16. 171
  17. 1683
  18. 294
  19. 2079
  20. 45
  21. 228
  22. 693
  23. 27
  24. 209
  25. 245
  26. 152
  27. 87
  28. 377
  29. 490
  30. 3168
  31. 693
  32. 290
  33. 784
  34. 45
  35. 196
  36. 108
  37. 27
  38. 2970
  39. 190
  40. 539

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