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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 140 · 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. 1.6.75 ÷ 10 =
  2. 2.43.95 × 100 =
  3. 3.166.8 ÷ 1000 =
  4. 4.22.79 × 1000 =
  5. 5.4.94 × 100 =
  6. 6.45.05 × 100 =
  7. 7.39.74 ÷ 10 =
  8. 8.7.42 × 100 =
  9. 9.261.4 ÷ 100 =
  10. 10.3.17 × 10 =
  11. 11.29.02 × 10 =
  12. 12.428.3 × 1000 =
  13. 13.324.9 ÷ 10 =
  14. 14.229.6 × 10 =
  15. 15.10.11 ÷ 10 =
  16. 16.11.41 ÷ 100 =
  17. 17.49.09 × 10 =
  18. 18.17.52 ÷ 100 =
  19. 19.458.4 ÷ 10 =
  20. 20.24.26 ÷ 1000 =
  21. 21.371.8 ÷ 100 =
  22. 22.3.01 × 1000 =
  23. 23.200.1 × 1000 =
  24. 24.34.49 ÷ 100 =
  25. 25.236.1 × 10 =
  26. 26.33.44 × 100 =
  27. 27.25.88 × 10 =
  28. 28.71.7 × 10 =
  29. 29.2.31 ÷ 1000 =
  30. 30.125.1 ÷ 1000 =
  31. 31.25.13 ÷ 10 =
  32. 32.0.64 ÷ 10 =
  33. 33.38.33 ÷ 100 =
  34. 34.20.21 ÷ 1000 =
  35. 35.52.5 × 1000 =
  36. 36.9.59 × 1000 =
  37. 37.25.91 ÷ 1000 =
  38. 38.437.9 × 1000 =
  39. 39.224.3 × 10 =
  40. 40.10.47 × 100 =

Answer key

  1. 0.675
  2. 4395
  3. 0.1668
  4. 22790
  5. 494
  6. 4505
  7. 3.974
  8. 742
  9. 2.614
  10. 31.7
  11. 290.2
  12. 428300
  13. 32.49
  14. 2296
  15. 1.011
  16. 0.1141
  17. 490.9
  18. 0.1752
  19. 45.84
  20. 0.02426
  21. 3.718
  22. 3010
  23. 200100
  24. 0.3449
  25. 2361
  26. 3344
  27. 258.8
  28. 717
  29. 0.00231
  30. 0.1251
  31. 2.513
  32. 0.064
  33. 0.3833
  34. 0.02021
  35. 52500
  36. 9590
  37. 0.02591
  38. 437900
  39. 2243
  40. 1047

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