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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 561 · 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. 1.146.1 × 10 =
  2. 2.134.4 ÷ 100 =
  3. 3.180.8 ÷ 100 =
  4. 4.47.93 ÷ 10 =
  5. 5.184.3 ÷ 10 =
  6. 6.24.17 × 1000 =
  7. 7.495.4 ÷ 10 =
  8. 8.90.5 ÷ 10 =
  9. 9.104.9 × 1000 =
  10. 10.125.8 × 1000 =
  11. 11.2.13 × 100 =
  12. 12.46.26 × 10 =
  13. 13.39.4 ÷ 100 =
  14. 14.6.67 × 1000 =
  15. 15.123.3 × 10 =
  16. 16.67.9 ÷ 10 =
  17. 17.4.97 ÷ 1000 =
  18. 18.225.1 × 100 =
  19. 19.450.6 ÷ 100 =
  20. 20.6.22 × 10 =
  21. 21.31.97 × 10 =
  22. 22.27.5 ÷ 100 =
  23. 23.146.1 × 100 =
  24. 24.275.2 × 1000 =
  25. 25.387.4 ÷ 1000 =
  26. 26.10.63 × 10 =
  27. 27.79.1 × 10 =
  28. 28.29.5 ÷ 10 =
  29. 29.97.4 × 1000 =
  30. 30.22.48 × 10 =
  31. 31.168.3 ÷ 10 =
  32. 32.13.44 × 100 =
  33. 33.29.48 × 1000 =
  34. 34.48.58 ÷ 1000 =
  35. 35.46.55 × 100 =
  36. 36.49.45 × 10 =
  37. 37.457.6 × 10 =
  38. 38.132.5 × 1000 =
  39. 39.18.41 ÷ 1000 =
  40. 40.33.29 ÷ 1000 =

Answer key

  1. 1461
  2. 1.344
  3. 1.808
  4. 4.793
  5. 18.43
  6. 24170
  7. 49.54
  8. 9.05
  9. 104900
  10. 125800
  11. 213
  12. 462.6
  13. 0.394
  14. 6670
  15. 1233
  16. 6.79
  17. 0.00497
  18. 22510
  19. 4.506
  20. 62.2
  21. 319.7
  22. 0.275
  23. 14610
  24. 275200
  25. 0.3874
  26. 106.3
  27. 791
  28. 2.95
  29. 97400
  30. 224.8
  31. 16.83
  32. 1344
  33. 29480
  34. 0.04858
  35. 4655
  36. 494.5
  37. 4576
  38. 132500
  39. 0.01841
  40. 0.03329

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