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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 917 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.31.05 ÷ 10 =
  2. 2.1.93 ÷ 100 =
  3. 3.21.05 × 100 =
  4. 4.1.79 ÷ 10 =
  5. 5.40.05 ÷ 100 =
  6. 6.33.45 × 1000 =
  7. 7.153.3 × 100 =
  8. 8.488.1 × 100 =
  9. 9.60.1 × 10 =
  10. 10.26.3 ÷ 10 =
  11. 11.11.8 × 100 =
  12. 12.28.9 × 1000 =
  13. 13.258.1 × 1000 =
  14. 14.362.3 ÷ 100 =
  15. 15.5.77 ÷ 10 =
  16. 16.313.6 ÷ 10 =
  17. 17.24.91 × 1000 =
  18. 18.30.33 ÷ 10 =
  19. 19.31.97 ÷ 10 =
  20. 20.264.3 × 10 =
  21. 21.487.7 ÷ 100 =
  22. 22.20.51 × 10 =
  23. 23.6.71 ÷ 100 =
  24. 24.249.2 × 100 =
  25. 25.3.81 × 10 =
  26. 26.13.96 × 1000 =
  27. 27.9.07 ÷ 10 =
  28. 28.12.44 × 1000 =
  29. 29.26.91 ÷ 10 =
  30. 30.251.8 × 100 =
  31. 31.17.41 ÷ 10 =
  32. 32.25.88 × 10 =
  33. 33.436.4 ÷ 1000 =
  34. 34.5.73 × 100 =
  35. 35.25.71 ÷ 100 =
  36. 36.52.8 × 100 =
  37. 37.25.84 × 10 =
  38. 38.40.53 × 1000 =
  39. 39.204.7 ÷ 100 =
  40. 40.31.79 × 10 =

Answer key

  1. 3.105
  2. 0.0193
  3. 2105
  4. 0.179
  5. 0.4005
  6. 33450
  7. 15330
  8. 48810
  9. 601
  10. 2.63
  11. 1180
  12. 28900
  13. 258100
  14. 3.623
  15. 0.577
  16. 31.36
  17. 24910
  18. 3.033
  19. 3.197
  20. 2643
  21. 4.877
  22. 205.1
  23. 0.0671
  24. 24920
  25. 38.1
  26. 13960
  27. 0.907
  28. 12440
  29. 2.691
  30. 25180
  31. 1.741
  32. 258.8
  33. 0.4364
  34. 573
  35. 0.2571
  36. 5280
  37. 258.4
  38. 40530
  39. 2.047
  40. 317.9

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