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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 91 · 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. 1.22.35 ÷ 1000 =
  2. 2.21.11 × 1000 =
  3. 3.474.3 ÷ 1000 =
  4. 4.330.2 × 10 =
  5. 5.18.91 × 10 =
  6. 6.164.1 × 1000 =
  7. 7.400.2 ÷ 10 =
  8. 8.171.1 × 100 =
  9. 9.9.71 × 100 =
  10. 10.263.1 ÷ 1000 =
  11. 11.377.6 × 1000 =
  12. 12.145.8 ÷ 100 =
  13. 13.355.9 × 100 =
  14. 14.373.5 ÷ 10 =
  15. 15.22.89 ÷ 1000 =
  16. 16.37.69 ÷ 1000 =
  17. 17.226.4 ÷ 10 =
  18. 18.28.46 × 10 =
  19. 19.10.31 × 100 =
  20. 20.56.3 ÷ 10 =
  21. 21.31.48 × 10 =
  22. 22.11.28 ÷ 10 =
  23. 23.496.4 ÷ 100 =
  24. 24.261.3 ÷ 100 =
  25. 25.3.3 ÷ 10 =
  26. 26.454.5 ÷ 10 =
  27. 27.43.7 ÷ 100 =
  28. 28.90.9 ÷ 1000 =
  29. 29.122.8 ÷ 100 =
  30. 30.347.4 ÷ 1000 =
  31. 31.192.9 ÷ 100 =
  32. 32.162.3 ÷ 1000 =
  33. 33.24.04 × 10 =
  34. 34.237.2 × 10 =
  35. 35.52.1 ÷ 100 =
  36. 36.97.4 × 1000 =
  37. 37.209.8 × 10 =
  38. 38.11.24 ÷ 100 =
  39. 39.140.2 × 100 =
  40. 40.356.1 ÷ 100 =

Answer key

  1. 0.02235
  2. 21110
  3. 0.4743
  4. 3302
  5. 189.1
  6. 164100
  7. 40.02
  8. 17110
  9. 971
  10. 0.2631
  11. 377600
  12. 1.458
  13. 35590
  14. 37.35
  15. 0.02289
  16. 0.03769
  17. 22.64
  18. 284.6
  19. 1031
  20. 5.63
  21. 314.8
  22. 1.128
  23. 4.964
  24. 2.613
  25. 0.33
  26. 45.45
  27. 0.437
  28. 0.0909
  29. 1.228
  30. 0.3474
  31. 1.929
  32. 0.1623
  33. 240.4
  34. 2372
  35. 0.521
  36. 97400
  37. 2098
  38. 0.1124
  39. 14020
  40. 3.561

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