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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 577 · 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. 1.374.1 × 100 =
  2. 2.427.9 ÷ 100 =
  3. 3.220.1 ÷ 1000 =
  4. 4.8.38 × 100 =
  5. 5.29.51 × 1000 =
  6. 6.122.5 ÷ 1000 =
  7. 7.316.1 × 10 =
  8. 8.28.25 × 10 =
  9. 9.364.6 × 10 =
  10. 10.23.68 × 100 =
  11. 11.42.07 ÷ 1000 =
  12. 12.148.6 × 1000 =
  13. 13.5.2 × 10 =
  14. 14.79.1 × 10 =
  15. 15.29.13 × 100 =
  16. 16.48.03 × 100 =
  17. 17.20.11 × 10 =
  18. 18.48.03 ÷ 10 =
  19. 19.482.1 ÷ 1000 =
  20. 20.24.48 × 1000 =
  21. 21.390.4 ÷ 10 =
  22. 22.23.98 × 1000 =
  23. 23.3.38 × 1000 =
  24. 24.329.1 ÷ 10 =
  25. 25.2.98 × 100 =
  26. 26.316.3 × 1000 =
  27. 27.484.3 ÷ 1000 =
  28. 28.284.1 ÷ 10 =
  29. 29.245.7 × 1000 =
  30. 30.376.1 ÷ 100 =
  31. 31.273.1 × 1000 =
  32. 32.92.4 × 1000 =
  33. 33.72.8 × 1000 =
  34. 34.40.21 ÷ 100 =
  35. 35.16.62 ÷ 1000 =
  36. 36.12.47 × 100 =
  37. 37.16.66 ÷ 10 =
  38. 38.99.1 × 1000 =
  39. 39.448.2 × 1000 =
  40. 40.173.8 ÷ 100 =

Answer key

  1. 37410
  2. 4.279
  3. 0.2201
  4. 838
  5. 29510
  6. 0.1225
  7. 3161
  8. 282.5
  9. 3646
  10. 2368
  11. 0.04207
  12. 148600
  13. 52
  14. 791
  15. 2913
  16. 4803
  17. 201.1
  18. 4.803
  19. 0.4821
  20. 24480
  21. 39.04
  22. 23980
  23. 3380
  24. 32.91
  25. 298
  26. 316300
  27. 0.4843
  28. 28.41
  29. 245700
  30. 3.761
  31. 273100
  32. 92400
  33. 72800
  34. 0.4021
  35. 0.01662
  36. 1247
  37. 1.666
  38. 99100
  39. 448200
  40. 1.738

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