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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 641 · 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. 1.33.64 × 100 =
  2. 2.165.9 ÷ 10 =
  3. 3.430.4 ÷ 1000 =
  4. 4.43.59 × 100 =
  5. 5.8.69 ÷ 1000 =
  6. 6.328.6 × 100 =
  7. 7.37.24 × 100 =
  8. 8.101.8 ÷ 100 =
  9. 9.14.8 ÷ 10 =
  10. 10.79.1 ÷ 10 =
  11. 11.10.47 ÷ 1000 =
  12. 12.5.71 ÷ 100 =
  13. 13.58.4 ÷ 100 =
  14. 14.205.5 × 1000 =
  15. 15.8.81 ÷ 100 =
  16. 16.8.27 ÷ 10 =
  17. 17.15.61 ÷ 1000 =
  18. 18.43.1 × 100 =
  19. 19.9.15 ÷ 1000 =
  20. 20.19.36 × 100 =
  21. 21.184.2 ÷ 10 =
  22. 22.13.69 × 100 =
  23. 23.345.7 ÷ 10 =
  24. 24.47.86 ÷ 100 =
  25. 25.366.5 ÷ 1000 =
  26. 26.104.7 ÷ 10 =
  27. 27.71.2 × 10 =
  28. 28.137.6 ÷ 100 =
  29. 29.18.93 ÷ 1000 =
  30. 30.1.32 ÷ 100 =
  31. 31.137.8 × 100 =
  32. 32.24.61 ÷ 100 =
  33. 33.9.13 ÷ 10 =
  34. 34.384.6 × 10 =
  35. 35.14.79 ÷ 1000 =
  36. 36.206.4 ÷ 10 =
  37. 37.305.5 × 10 =
  38. 38.446.5 × 1000 =
  39. 39.341.4 × 1000 =
  40. 40.49.62 ÷ 10 =

Answer key

  1. 3364
  2. 16.59
  3. 0.4304
  4. 4359
  5. 0.00869
  6. 32860
  7. 3724
  8. 1.018
  9. 1.48
  10. 7.91
  11. 0.01047
  12. 0.0571
  13. 0.584
  14. 205500
  15. 0.0881
  16. 0.827
  17. 0.01561
  18. 4310
  19. 0.00915
  20. 1936
  21. 18.42
  22. 1369
  23. 34.57
  24. 0.4786
  25. 0.3665
  26. 10.47
  27. 712
  28. 1.376
  29. 0.01893
  30. 0.0132
  31. 13780
  32. 0.2461
  33. 0.913
  34. 3846
  35. 0.01479
  36. 20.64
  37. 3055
  38. 446500
  39. 341400
  40. 4.962

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