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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 617 · 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. 1.44.1 ÷ 1000 =
  2. 2.386.2 ÷ 100 =
  3. 3.444.1 × 100 =
  4. 4.489.3 × 100 =
  5. 5.155.8 ÷ 10 =
  6. 6.27.29 ÷ 10 =
  7. 7.496.5 × 10 =
  8. 8.101.1 × 100 =
  9. 9.22.54 ÷ 10 =
  10. 10.365.5 × 10 =
  11. 11.408.1 ÷ 10 =
  12. 12.270.2 × 1000 =
  13. 13.29.73 × 10 =
  14. 14.56.3 × 1000 =
  15. 15.449.2 × 100 =
  16. 16.303.4 ÷ 10 =
  17. 17.486.2 ÷ 1000 =
  18. 18.426.4 ÷ 10 =
  19. 19.7.06 ÷ 100 =
  20. 20.440.9 × 100 =
  21. 21.213.7 ÷ 10 =
  22. 22.359.3 × 1000 =
  23. 23.21.95 × 10 =
  24. 24.301.2 ÷ 10 =
  25. 25.32.86 × 100 =
  26. 26.43.65 ÷ 1000 =
  27. 27.141.2 × 10 =
  28. 28.25.62 × 10 =
  29. 29.39.31 × 1000 =
  30. 30.275.8 × 10 =
  31. 31.28.35 ÷ 100 =
  32. 32.13.67 × 10 =
  33. 33.8.88 × 10 =
  34. 34.282.9 ÷ 10 =
  35. 35.13.74 ÷ 100 =
  36. 36.245.8 × 1000 =
  37. 37.252.9 × 1000 =
  38. 38.32.99 × 100 =
  39. 39.14.05 ÷ 100 =
  40. 40.18.56 × 10 =

Answer key

  1. 0.0441
  2. 3.862
  3. 44410
  4. 48930
  5. 15.58
  6. 2.729
  7. 4965
  8. 10110
  9. 2.254
  10. 3655
  11. 40.81
  12. 270200
  13. 297.3
  14. 56300
  15. 44920
  16. 30.34
  17. 0.4862
  18. 42.64
  19. 0.0706
  20. 44090
  21. 21.37
  22. 359300
  23. 219.5
  24. 30.12
  25. 3286
  26. 0.04365
  27. 1412
  28. 256.2
  29. 39310
  30. 2758
  31. 0.2835
  32. 136.7
  33. 88.8
  34. 28.29
  35. 0.1374
  36. 245800
  37. 252900
  38. 3299
  39. 0.1405
  40. 185.6

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