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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 74 · 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. 1.100.5 ÷ 10 =
  2. 2.11.3 ÷ 1000 =
  3. 3.42.81 ÷ 10 =
  4. 4.402.1 × 100 =
  5. 5.46.41 × 10 =
  6. 6.467.1 × 100 =
  7. 7.56.4 × 10 =
  8. 8.15.95 × 10 =
  9. 9.80.3 ÷ 10 =
  10. 10.36.27 ÷ 1000 =
  11. 11.62.8 ÷ 1000 =
  12. 12.286.2 × 1000 =
  13. 13.342.3 × 100 =
  14. 14.18.1 ÷ 10 =
  15. 15.297.6 × 100 =
  16. 16.151.4 × 10 =
  17. 17.19.34 × 1000 =
  18. 18.136.6 ÷ 10 =
  19. 19.37.59 ÷ 10 =
  20. 20.24.41 × 10 =
  21. 21.344.5 × 1000 =
  22. 22.368.9 × 10 =
  23. 23.299.1 ÷ 100 =
  24. 24.216.4 ÷ 100 =
  25. 25.230.7 ÷ 1000 =
  26. 26.21.03 ÷ 100 =
  27. 27.6.9 × 1000 =
  28. 28.181.2 ÷ 100 =
  29. 29.239.8 × 10 =
  30. 30.248.3 × 1000 =
  31. 31.14.65 × 100 =
  32. 32.307.3 × 1000 =
  33. 33.180.1 ÷ 10 =
  34. 34.17.35 ÷ 100 =
  35. 35.9.73 ÷ 1000 =
  36. 36.203.8 × 10 =
  37. 37.488.9 × 10 =
  38. 38.48.41 ÷ 1000 =
  39. 39.10.9 ÷ 10 =
  40. 40.11.01 × 100 =

Answer key

  1. 10.05
  2. 0.0113
  3. 4.281
  4. 40210
  5. 464.1
  6. 46710
  7. 564
  8. 159.5
  9. 8.03
  10. 0.03627
  11. 0.0628
  12. 286200
  13. 34230
  14. 1.81
  15. 29760
  16. 1514
  17. 19340
  18. 13.66
  19. 3.759
  20. 244.1
  21. 344500
  22. 3689
  23. 2.991
  24. 2.164
  25. 0.2307
  26. 0.2103
  27. 6900
  28. 1.812
  29. 2398
  30. 248300
  31. 1465
  32. 307300
  33. 18.01
  34. 0.1735
  35. 0.00973
  36. 2038
  37. 4889
  38. 0.04841
  39. 1.09
  40. 1101

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