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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 719 · 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. 1.87.1 × 100 =
  2. 2.8.52 ÷ 100 =
  3. 3.135.7 × 10 =
  4. 4.452.5 × 100 =
  5. 5.54.5 ÷ 1000 =
  6. 6.8.96 × 1000 =
  7. 7.39.78 × 1000 =
  8. 8.10.11 × 1000 =
  9. 9.39.57 × 1000 =
  10. 10.14.76 × 1000 =
  11. 11.246.8 × 100 =
  12. 12.1.03 × 10 =
  13. 13.14.53 ÷ 1000 =
  14. 14.43.5 × 100 =
  15. 15.113.7 × 1000 =
  16. 16.266.7 ÷ 1000 =
  17. 17.359.4 × 100 =
  18. 18.231.1 ÷ 100 =
  19. 19.27.39 × 100 =
  20. 20.391.2 ÷ 100 =
  21. 21.130.1 × 100 =
  22. 22.10.02 × 100 =
  23. 23.10.26 × 1000 =
  24. 24.36.49 × 1000 =
  25. 25.329.4 × 1000 =
  26. 26.44.74 × 10 =
  27. 27.27.06 ÷ 10 =
  28. 28.23.76 × 10 =
  29. 29.330.5 ÷ 1000 =
  30. 30.49.1 × 1000 =
  31. 31.248.6 ÷ 100 =
  32. 32.135.4 ÷ 10 =
  33. 33.29.68 × 10 =
  34. 34.7.9 ÷ 1000 =
  35. 35.30.62 × 10 =
  36. 36.10.76 ÷ 10 =
  37. 37.10.36 × 10 =
  38. 38.198.4 ÷ 10 =
  39. 39.38.71 × 10 =
  40. 40.27.8 ÷ 1000 =

Answer key

  1. 8710
  2. 0.0852
  3. 1357
  4. 45250
  5. 0.0545
  6. 8960
  7. 39780
  8. 10110
  9. 39570
  10. 14760
  11. 24680
  12. 10.3
  13. 0.01453
  14. 4350
  15. 113700
  16. 0.2667
  17. 35940
  18. 2.311
  19. 2739
  20. 3.912
  21. 13010
  22. 1002
  23. 10260
  24. 36490
  25. 329400
  26. 447.4
  27. 2.706
  28. 237.6
  29. 0.3305
  30. 49100
  31. 2.486
  32. 13.54
  33. 296.8
  34. 0.0079
  35. 306.2
  36. 1.076
  37. 103.6
  38. 19.84
  39. 387.1
  40. 0.0278

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