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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 795 · 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. 1.1.09 × 1000 =
  2. 2.366.6 × 100 =
  3. 3.195.1 ÷ 100 =
  4. 4.37.01 ÷ 100 =
  5. 5.162.4 × 10 =
  6. 6.155.8 ÷ 100 =
  7. 7.27.93 × 10 =
  8. 8.40.02 ÷ 10 =
  9. 9.81.6 × 10 =
  10. 10.49.11 × 10 =
  11. 11.6.35 ÷ 10 =
  12. 12.1.71 ÷ 1000 =
  13. 13.36.9 ÷ 1000 =
  14. 14.80.9 ÷ 10 =
  15. 15.11.37 ÷ 100 =
  16. 16.33.56 ÷ 100 =
  17. 17.28.7 ÷ 10 =
  18. 18.72.7 ÷ 1000 =
  19. 19.498.1 ÷ 100 =
  20. 20.129.4 ÷ 100 =
  21. 21.415.3 × 10 =
  22. 22.44.81 × 10 =
  23. 23.470.3 ÷ 1000 =
  24. 24.483.5 ÷ 100 =
  25. 25.38.36 ÷ 1000 =
  26. 26.37.64 × 1000 =
  27. 27.287.4 × 10 =
  28. 28.8.57 × 100 =
  29. 29.250.5 ÷ 1000 =
  30. 30.255.1 × 1000 =
  31. 31.452.3 × 100 =
  32. 32.47.31 ÷ 10 =
  33. 33.230.3 ÷ 100 =
  34. 34.222.7 ÷ 10 =
  35. 35.16.26 × 1000 =
  36. 36.461.1 ÷ 1000 =
  37. 37.23.5 ÷ 1000 =
  38. 38.9.81 × 100 =
  39. 39.338.4 × 100 =
  40. 40.14.1 × 10 =

Answer key

  1. 1090
  2. 36660
  3. 1.951
  4. 0.3701
  5. 1624
  6. 1.558
  7. 279.3
  8. 4.002
  9. 816
  10. 491.1
  11. 0.635
  12. 0.00171
  13. 0.0369
  14. 8.09
  15. 0.1137
  16. 0.3356
  17. 2.87
  18. 0.0727
  19. 4.981
  20. 1.294
  21. 4153
  22. 448.1
  23. 0.4703
  24. 4.835
  25. 0.03836
  26. 37640
  27. 2874
  28. 857
  29. 0.2505
  30. 255100
  31. 45230
  32. 4.731
  33. 2.303
  34. 22.27
  35. 16260
  36. 0.4611
  37. 0.0235
  38. 981
  39. 33840
  40. 141

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