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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 829 · 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. 1.127.5 × 10 =
  2. 2.238.3 × 1000 =
  3. 3.326.6 × 1000 =
  4. 4.43.35 ÷ 1000 =
  5. 5.10.89 × 10 =
  6. 6.31.11 × 1000 =
  7. 7.18.35 × 1000 =
  8. 8.2.58 × 10 =
  9. 9.41.88 ÷ 1000 =
  10. 10.208.8 ÷ 10 =
  11. 11.149.4 × 10 =
  12. 12.398.8 ÷ 1000 =
  13. 13.1.01 × 1000 =
  14. 14.408.3 × 1000 =
  15. 15.48.56 ÷ 1000 =
  16. 16.3.57 × 10 =
  17. 17.28.53 ÷ 10 =
  18. 18.480.3 ÷ 100 =
  19. 19.0.59 ÷ 10 =
  20. 20.275.1 × 100 =
  21. 21.200.7 ÷ 10 =
  22. 22.105.1 × 10 =
  23. 23.40.21 ÷ 100 =
  24. 24.18.52 ÷ 100 =
  25. 25.278.9 × 1000 =
  26. 26.85.7 ÷ 1000 =
  27. 27.29.05 ÷ 100 =
  28. 28.85.9 × 10 =
  29. 29.25.28 ÷ 1000 =
  30. 30.180.2 × 1000 =
  31. 31.496.4 ÷ 1000 =
  32. 32.332.3 ÷ 10 =
  33. 33.5.64 × 10 =
  34. 34.35.11 ÷ 100 =
  35. 35.455.9 ÷ 10 =
  36. 36.16.73 × 100 =
  37. 37.305.1 ÷ 1000 =
  38. 38.14.35 ÷ 10 =
  39. 39.63.3 × 1000 =
  40. 40.5.57 ÷ 100 =

Answer key

  1. 1275
  2. 238300
  3. 326600
  4. 0.04335
  5. 108.9
  6. 31110
  7. 18350
  8. 25.8
  9. 0.04188
  10. 20.88
  11. 1494
  12. 0.3988
  13. 1010
  14. 408300
  15. 0.04856
  16. 35.7
  17. 2.853
  18. 4.803
  19. 0.059
  20. 27510
  21. 20.07
  22. 1051
  23. 0.4021
  24. 0.1852
  25. 278900
  26. 0.0857
  27. 0.2905
  28. 859
  29. 0.02528
  30. 180200
  31. 0.4964
  32. 33.23
  33. 56.4
  34. 0.3511
  35. 45.59
  36. 1673
  37. 0.3051
  38. 1.435
  39. 63300
  40. 0.0557

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