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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 160 · 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. 1.66.9 × 1000 =
  2. 2.24.37 ÷ 100 =
  3. 3.30.1 × 10 =
  4. 4.24.02 ÷ 100 =
  5. 5.457.4 ÷ 10 =
  6. 6.416.8 ÷ 10 =
  7. 7.364.5 × 10 =
  8. 8.107.6 × 1000 =
  9. 9.415.2 ÷ 10 =
  10. 10.33.24 ÷ 10 =
  11. 11.143.7 ÷ 10 =
  12. 12.22.14 ÷ 1000 =
  13. 13.20.93 ÷ 1000 =
  14. 14.154.8 × 100 =
  15. 15.13.26 × 1000 =
  16. 16.27.86 ÷ 1000 =
  17. 17.38.07 ÷ 1000 =
  18. 18.331.3 ÷ 100 =
  19. 19.183.8 ÷ 100 =
  20. 20.170.9 × 10 =
  21. 21.481.8 ÷ 10 =
  22. 22.368.4 ÷ 1000 =
  23. 23.26.51 ÷ 100 =
  24. 24.55.7 ÷ 10 =
  25. 25.135.8 × 10 =
  26. 26.3.7 ÷ 1000 =
  27. 27.4.42 ÷ 100 =
  28. 28.8.56 × 10 =
  29. 29.55.3 ÷ 1000 =
  30. 30.445.5 × 100 =
  31. 31.27.26 ÷ 100 =
  32. 32.127.1 ÷ 100 =
  33. 33.438.1 × 1000 =
  34. 34.15.32 ÷ 10 =
  35. 35.4.78 × 10 =
  36. 36.235.6 ÷ 10 =
  37. 37.126.7 × 100 =
  38. 38.3.54 ÷ 100 =
  39. 39.469.3 × 10 =
  40. 40.13.66 × 10 =

Answer key

  1. 66900
  2. 0.2437
  3. 301
  4. 0.2402
  5. 45.74
  6. 41.68
  7. 3645
  8. 107600
  9. 41.52
  10. 3.324
  11. 14.37
  12. 0.02214
  13. 0.02093
  14. 15480
  15. 13260
  16. 0.02786
  17. 0.03807
  18. 3.313
  19. 1.838
  20. 1709
  21. 48.18
  22. 0.3684
  23. 0.2651
  24. 5.57
  25. 1358
  26. 0.0037
  27. 0.0442
  28. 85.6
  29. 0.0553
  30. 44550
  31. 0.2726
  32. 1.271
  33. 438100
  34. 1.532
  35. 47.8
  36. 23.56
  37. 12670
  38. 0.0354
  39. 4693
  40. 136.6

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