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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 402 · 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. 1.70.4 ÷ 100 =
  2. 2.299.8 × 1000 =
  3. 3.27.57 × 100 =
  4. 4.42.33 × 100 =
  5. 5.430.8 ÷ 10 =
  6. 6.169.9 ÷ 100 =
  7. 7.47.1 × 1000 =
  8. 8.5.22 × 10 =
  9. 9.371.4 × 1000 =
  10. 10.127.2 ÷ 1000 =
  11. 11.228.1 × 100 =
  12. 12.397.7 × 100 =
  13. 13.24.78 × 1000 =
  14. 14.341.3 ÷ 100 =
  15. 15.256.1 ÷ 10 =
  16. 16.11.55 × 10 =
  17. 17.376.1 × 100 =
  18. 18.31.02 ÷ 100 =
  19. 19.393.5 × 100 =
  20. 20.26.53 ÷ 10 =
  21. 21.317.4 ÷ 100 =
  22. 22.311.7 ÷ 100 =
  23. 23.182.7 ÷ 10 =
  24. 24.87.5 ÷ 100 =
  25. 25.27.98 × 1000 =
  26. 26.419.8 × 10 =
  27. 27.447.6 × 1000 =
  28. 28.18.21 × 100 =
  29. 29.402.5 × 10 =
  30. 30.287.3 ÷ 10 =
  31. 31.146.8 × 10 =
  32. 32.272.2 ÷ 1000 =
  33. 33.45.5 × 1000 =
  34. 34.2.51 × 10 =
  35. 35.46.74 ÷ 1000 =
  36. 36.17.11 ÷ 100 =
  37. 37.25.29 × 1000 =
  38. 38.204.1 ÷ 10 =
  39. 39.14.15 ÷ 10 =
  40. 40.14.53 × 1000 =

Answer key

  1. 0.704
  2. 299800
  3. 2757
  4. 4233
  5. 43.08
  6. 1.699
  7. 47100
  8. 52.2
  9. 371400
  10. 0.1272
  11. 22810
  12. 39770
  13. 24780
  14. 3.413
  15. 25.61
  16. 115.5
  17. 37610
  18. 0.3102
  19. 39350
  20. 2.653
  21. 3.174
  22. 3.117
  23. 18.27
  24. 0.875
  25. 27980
  26. 4198
  27. 447600
  28. 1821
  29. 4025
  30. 28.73
  31. 1468
  32. 0.2722
  33. 45500
  34. 25.1
  35. 0.04674
  36. 0.1711
  37. 25290
  38. 20.41
  39. 1.415
  40. 14530

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