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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 89 · 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. 1.243.9 ÷ 100 =
  2. 2.25.51 × 1000 =
  3. 3.158.7 ÷ 100 =
  4. 4.206.1 × 10 =
  5. 5.216.8 ÷ 10 =
  6. 6.217.1 ÷ 10 =
  7. 7.36.66 ÷ 1000 =
  8. 8.2.09 ÷ 1000 =
  9. 9.6.4 × 100 =
  10. 10.407.3 × 1000 =
  11. 11.140.1 ÷ 1000 =
  12. 12.348.6 × 100 =
  13. 13.308.5 × 10 =
  14. 14.29.81 ÷ 10 =
  15. 15.66.6 ÷ 1000 =
  16. 16.8.48 ÷ 10 =
  17. 17.24.59 ÷ 10 =
  18. 18.466.1 × 100 =
  19. 19.335.5 × 10 =
  20. 20.102.5 ÷ 10 =
  21. 21.3.1 ÷ 10 =
  22. 22.103.9 ÷ 1000 =
  23. 23.23.9 ÷ 1000 =
  24. 24.147.5 × 10 =
  25. 25.26.85 × 10 =
  26. 26.18.98 × 1000 =
  27. 27.66.1 × 10 =
  28. 28.34.24 ÷ 10 =
  29. 29.1.3 ÷ 1000 =
  30. 30.32.11 ÷ 10 =
  31. 31.79.6 ÷ 1000 =
  32. 32.45.27 ÷ 10 =
  33. 33.29.71 × 1000 =
  34. 34.25.9 × 1000 =
  35. 35.21.54 ÷ 10 =
  36. 36.36.82 ÷ 10 =
  37. 37.120.5 ÷ 10 =
  38. 38.78.9 × 1000 =
  39. 39.218.3 ÷ 1000 =
  40. 40.306.4 ÷ 10 =

Answer key

  1. 2.439
  2. 25510
  3. 1.587
  4. 2061
  5. 21.68
  6. 21.71
  7. 0.03666
  8. 0.00209
  9. 640
  10. 407300
  11. 0.1401
  12. 34860
  13. 3085
  14. 2.981
  15. 0.0666
  16. 0.848
  17. 2.459
  18. 46610
  19. 3355
  20. 10.25
  21. 0.31
  22. 0.1039
  23. 0.0239
  24. 1475
  25. 268.5
  26. 18980
  27. 661
  28. 3.424
  29. 0.0013
  30. 3.211
  31. 0.0796
  32. 4.527
  33. 29710
  34. 25900
  35. 2.154
  36. 3.682
  37. 12.05
  38. 78900
  39. 0.2183
  40. 30.64

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