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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 665 · 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. 1.84.2 ÷ 100 =
  2. 2.349.5 ÷ 1000 =
  3. 3.8.92 × 1000 =
  4. 4.460.1 ÷ 10 =
  5. 5.151.8 ÷ 100 =
  6. 6.26.24 × 10 =
  7. 7.3.06 × 10 =
  8. 8.24.01 ÷ 10 =
  9. 9.365.1 × 100 =
  10. 10.12.68 × 100 =
  11. 11.175.2 ÷ 100 =
  12. 12.109.6 ÷ 10 =
  13. 13.222.9 ÷ 10 =
  14. 14.465.1 ÷ 100 =
  15. 15.272.1 × 10 =
  16. 16.189.6 ÷ 10 =
  17. 17.437.8 × 100 =
  18. 18.356.5 ÷ 10 =
  19. 19.37.07 × 1000 =
  20. 20.385.6 × 1000 =
  21. 21.245.3 ÷ 100 =
  22. 22.131.7 ÷ 10 =
  23. 23.480.6 ÷ 1000 =
  24. 24.223.7 × 10 =
  25. 25.14.84 ÷ 10 =
  26. 26.8.91 × 100 =
  27. 27.23.12 ÷ 10 =
  28. 28.483.5 × 100 =
  29. 29.453.8 × 100 =
  30. 30.25.54 ÷ 1000 =
  31. 31.424.7 × 100 =
  32. 32.116.6 × 10 =
  33. 33.380.8 × 10 =
  34. 34.457.7 ÷ 10 =
  35. 35.381.1 ÷ 10 =
  36. 36.136.8 ÷ 1000 =
  37. 37.20.97 ÷ 10 =
  38. 38.247.4 ÷ 100 =
  39. 39.347.5 ÷ 100 =
  40. 40.20.63 × 100 =

Answer key

  1. 0.842
  2. 0.3495
  3. 8920
  4. 46.01
  5. 1.518
  6. 262.4
  7. 30.6
  8. 2.401
  9. 36510
  10. 1268
  11. 1.752
  12. 10.96
  13. 22.29
  14. 4.651
  15. 2721
  16. 18.96
  17. 43780
  18. 35.65
  19. 37070
  20. 385600
  21. 2.453
  22. 13.17
  23. 0.4806
  24. 2237
  25. 1.484
  26. 891
  27. 2.312
  28. 48350
  29. 45380
  30. 0.02554
  31. 42470
  32. 1166
  33. 3808
  34. 45.77
  35. 38.11
  36. 0.1368
  37. 2.097
  38. 2.474
  39. 3.475
  40. 2063

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