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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 639 · 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. 1.99.2 ÷ 10 =
  2. 2.39.08 × 10 =
  3. 3.36.3 × 1000 =
  4. 4.35.05 × 1000 =
  5. 5.432.1 × 100 =
  6. 6.41.2 ÷ 1000 =
  7. 7.360.2 ÷ 10 =
  8. 8.479.8 ÷ 1000 =
  9. 9.410.8 × 10 =
  10. 10.39.01 ÷ 100 =
  11. 11.208.1 ÷ 10 =
  12. 12.437.6 ÷ 1000 =
  13. 13.31.02 ÷ 10 =
  14. 14.233.8 ÷ 10 =
  15. 15.314.1 ÷ 10 =
  16. 16.42.89 × 100 =
  17. 17.469.9 ÷ 1000 =
  18. 18.343.5 ÷ 100 =
  19. 19.22.39 × 100 =
  20. 20.8.88 × 10 =
  21. 21.150.1 × 100 =
  22. 22.330.6 × 10 =
  23. 23.44.12 × 10 =
  24. 24.27.1 ÷ 1000 =
  25. 25.29.72 × 100 =
  26. 26.42.05 × 100 =
  27. 27.16.46 ÷ 100 =
  28. 28.63.9 ÷ 1000 =
  29. 29.61.2 ÷ 100 =
  30. 30.37.26 × 100 =
  31. 31.262.3 × 1000 =
  32. 32.376.2 × 10 =
  33. 33.9.86 ÷ 10 =
  34. 34.448.9 × 10 =
  35. 35.6.1 ÷ 1000 =
  36. 36.46.93 ÷ 100 =
  37. 37.103.6 × 10 =
  38. 38.1.94 × 100 =
  39. 39.474.9 ÷ 1000 =
  40. 40.14.65 ÷ 100 =

Answer key

  1. 9.92
  2. 390.8
  3. 36300
  4. 35050
  5. 43210
  6. 0.0412
  7. 36.02
  8. 0.4798
  9. 4108
  10. 0.3901
  11. 20.81
  12. 0.4376
  13. 3.102
  14. 23.38
  15. 31.41
  16. 4289
  17. 0.4699
  18. 3.435
  19. 2239
  20. 88.8
  21. 15010
  22. 3306
  23. 441.2
  24. 0.0271
  25. 2972
  26. 4205
  27. 0.1646
  28. 0.0639
  29. 0.612
  30. 3726
  31. 262300
  32. 3762
  33. 0.986
  34. 4489
  35. 0.0061
  36. 0.4693
  37. 1036
  38. 194
  39. 0.4749
  40. 0.1465

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