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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 507 · 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. 1.54.1 ÷ 10 =
  2. 2.83.5 × 1000 =
  3. 3.486.6 × 100 =
  4. 4.3.46 ÷ 1000 =
  5. 5.3.4 × 100 =
  6. 6.13.75 ÷ 10 =
  7. 7.20.19 ÷ 100 =
  8. 8.22.92 ÷ 10 =
  9. 9.2.27 ÷ 1000 =
  10. 10.268.1 ÷ 1000 =
  11. 11.330.5 ÷ 1000 =
  12. 12.340.6 × 100 =
  13. 13.448.8 ÷ 1000 =
  14. 14.15.33 ÷ 1000 =
  15. 15.0.26 ÷ 10 =
  16. 16.18.44 × 10 =
  17. 17.98.3 ÷ 10 =
  18. 18.40.42 × 10 =
  19. 19.45.96 × 1000 =
  20. 20.337.6 × 100 =
  21. 21.19.05 ÷ 10 =
  22. 22.445.6 × 1000 =
  23. 23.10.73 × 1000 =
  24. 24.436.5 ÷ 1000 =
  25. 25.328.1 ÷ 10 =
  26. 26.28.73 × 100 =
  27. 27.26.95 × 10 =
  28. 28.11.33 ÷ 100 =
  29. 29.10.1 × 1000 =
  30. 30.38.55 ÷ 100 =
  31. 31.34.73 × 10 =
  32. 32.99.3 × 1000 =
  33. 33.0.21 ÷ 10 =
  34. 34.84.3 × 10 =
  35. 35.45.98 × 100 =
  36. 36.261.4 × 1000 =
  37. 37.16.41 ÷ 100 =
  38. 38.4.49 × 1000 =
  39. 39.210.1 ÷ 10 =
  40. 40.471.1 × 10 =

Answer key

  1. 5.41
  2. 83500
  3. 48660
  4. 0.00346
  5. 340
  6. 1.375
  7. 0.2019
  8. 2.292
  9. 0.00227
  10. 0.2681
  11. 0.3305
  12. 34060
  13. 0.4488
  14. 0.01533
  15. 0.026
  16. 184.4
  17. 9.83
  18. 404.2
  19. 45960
  20. 33760
  21. 1.905
  22. 445600
  23. 10730
  24. 0.4365
  25. 32.81
  26. 2873
  27. 269.5
  28. 0.1133
  29. 10100
  30. 0.3855
  31. 347.3
  32. 99300
  33. 0.021
  34. 843
  35. 4598
  36. 261400
  37. 0.1641
  38. 4490
  39. 21.01
  40. 4711

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