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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 490 · 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. 1.44.7 ÷ 10 =
  2. 2.37.22 × 100 =
  3. 3.0.53 ÷ 100 =
  4. 4.144.1 × 100 =
  5. 5.473.5 ÷ 1000 =
  6. 6.11.38 × 1000 =
  7. 7.24.21 × 10 =
  8. 8.498.9 × 100 =
  9. 9.182.6 × 10 =
  10. 10.261.9 ÷ 100 =
  11. 11.21.6 × 1000 =
  12. 12.45.82 × 10 =
  13. 13.15.93 × 100 =
  14. 14.15.78 ÷ 1000 =
  15. 15.362.6 ÷ 100 =
  16. 16.173.4 ÷ 10 =
  17. 17.49.1 ÷ 1000 =
  18. 18.33.25 ÷ 10 =
  19. 19.6.33 × 100 =
  20. 20.442.6 ÷ 10 =
  21. 21.45.3 × 10 =
  22. 22.258.9 ÷ 10 =
  23. 23.29.56 ÷ 1000 =
  24. 24.297.5 ÷ 10 =
  25. 25.209.1 ÷ 10 =
  26. 26.35.44 ÷ 10 =
  27. 27.18.38 ÷ 1000 =
  28. 28.112.3 ÷ 10 =
  29. 29.489.1 ÷ 1000 =
  30. 30.151.2 × 1000 =
  31. 31.15.63 × 1000 =
  32. 32.424.5 ÷ 1000 =
  33. 33.415.5 × 10 =
  34. 34.40.01 × 1000 =
  35. 35.221.3 ÷ 100 =
  36. 36.2.83 × 1000 =
  37. 37.37.16 ÷ 10 =
  38. 38.20.01 × 1000 =
  39. 39.477.1 × 10 =
  40. 40.124.2 × 10 =

Answer key

  1. 4.47
  2. 3722
  3. 0.0053
  4. 14410
  5. 0.4735
  6. 11380
  7. 242.1
  8. 49890
  9. 1826
  10. 2.619
  11. 21600
  12. 458.2
  13. 1593
  14. 0.01578
  15. 3.626
  16. 17.34
  17. 0.0491
  18. 3.325
  19. 633
  20. 44.26
  21. 453
  22. 25.89
  23. 0.02956
  24. 29.75
  25. 20.91
  26. 3.544
  27. 0.01838
  28. 11.23
  29. 0.4891
  30. 151200
  31. 15630
  32. 0.4245
  33. 4155
  34. 40010
  35. 2.213
  36. 2830
  37. 3.716
  38. 20010
  39. 4771
  40. 1242

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