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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 104 · 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. 1.223.1 × 1000 =
  2. 2.446.2 × 1000 =
  3. 3.45.87 ÷ 1000 =
  4. 4.188.2 ÷ 10 =
  5. 5.251.4 × 100 =
  6. 6.34.48 ÷ 1000 =
  7. 7.2.84 ÷ 1000 =
  8. 8.379.8 ÷ 1000 =
  9. 9.407.1 × 10 =
  10. 10.28.77 × 100 =
  11. 11.219.3 × 10 =
  12. 12.104.5 × 10 =
  13. 13.7.2 × 1000 =
  14. 14.302.9 ÷ 10 =
  15. 15.92.1 ÷ 10 =
  16. 16.370.1 ÷ 100 =
  17. 17.215.1 ÷ 1000 =
  18. 18.16.9 × 100 =
  19. 19.5.76 ÷ 1000 =
  20. 20.37.19 ÷ 1000 =
  21. 21.9.38 × 10 =
  22. 22.24.73 × 100 =
  23. 23.109.1 × 100 =
  24. 24.346.4 × 10 =
  25. 25.21.67 × 10 =
  26. 26.275.2 ÷ 10 =
  27. 27.126.1 × 10 =
  28. 28.2.76 × 1000 =
  29. 29.92.7 ÷ 10 =
  30. 30.132.1 ÷ 100 =
  31. 31.33.29 × 1000 =
  32. 32.80.1 ÷ 100 =
  33. 33.30.02 ÷ 10 =
  34. 34.226.6 ÷ 100 =
  35. 35.319.1 ÷ 10 =
  36. 36.134.1 ÷ 1000 =
  37. 37.31.39 ÷ 100 =
  38. 38.406.3 ÷ 100 =
  39. 39.105.1 × 1000 =
  40. 40.73.8 ÷ 100 =

Answer key

  1. 223100
  2. 446200
  3. 0.04587
  4. 18.82
  5. 25140
  6. 0.03448
  7. 0.00284
  8. 0.3798
  9. 4071
  10. 2877
  11. 2193
  12. 1045
  13. 7200
  14. 30.29
  15. 9.21
  16. 3.701
  17. 0.2151
  18. 1690
  19. 0.00576
  20. 0.03719
  21. 93.8
  22. 2473
  23. 10910
  24. 3464
  25. 216.7
  26. 27.52
  27. 1261
  28. 2760
  29. 9.27
  30. 1.321
  31. 33290
  32. 0.801
  33. 3.002
  34. 2.266
  35. 31.91
  36. 0.1341
  37. 0.3139
  38. 4.063
  39. 105100
  40. 0.738

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