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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 681 · 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. 1.90.1 ÷ 100 =
  2. 2.415.5 × 100 =
  3. 3.17.65 × 1000 =
  4. 4.337.4 × 1000 =
  5. 5.386.3 × 10 =
  6. 6.43.86 × 10 =
  7. 7.293.7 ÷ 10 =
  8. 8.11.01 × 100 =
  9. 9.11.06 ÷ 100 =
  10. 10.21.3 ÷ 100 =
  11. 11.209.8 × 100 =
  12. 12.192.3 ÷ 1000 =
  13. 13.46.26 × 10 =
  14. 14.280.7 × 1000 =
  15. 15.434.6 × 1000 =
  16. 16.16.61 ÷ 1000 =
  17. 17.23.45 × 100 =
  18. 18.421.6 × 100 =
  19. 19.166.2 × 10 =
  20. 20.192.9 ÷ 1000 =
  21. 21.221.9 × 10 =
  22. 22.380.7 × 100 =
  23. 23.18.41 × 10 =
  24. 24.32.56 ÷ 1000 =
  25. 25.267.2 × 1000 =
  26. 26.0.48 × 100 =
  27. 27.16.81 × 100 =
  28. 28.215.1 × 100 =
  29. 29.1.55 ÷ 1000 =
  30. 30.236.9 ÷ 1000 =
  31. 31.61.1 ÷ 100 =
  32. 32.42.13 ÷ 1000 =
  33. 33.30.05 × 10 =
  34. 34.22.4 ÷ 1000 =
  35. 35.44.5 × 10 =
  36. 36.0.87 ÷ 1000 =
  37. 37.20.21 × 1000 =
  38. 38.139.2 × 10 =
  39. 39.102.3 ÷ 100 =
  40. 40.45.36 ÷ 1000 =

Answer key

  1. 0.901
  2. 41550
  3. 17650
  4. 337400
  5. 3863
  6. 438.6
  7. 29.37
  8. 1101
  9. 0.1106
  10. 0.213
  11. 20980
  12. 0.1923
  13. 462.6
  14. 280700
  15. 434600
  16. 0.01661
  17. 2345
  18. 42160
  19. 1662
  20. 0.1929
  21. 2219
  22. 38070
  23. 184.1
  24. 0.03256
  25. 267200
  26. 48
  27. 1681
  28. 21510
  29. 0.00155
  30. 0.2369
  31. 0.611
  32. 0.04213
  33. 300.5
  34. 0.0224
  35. 445
  36. 0.00087
  37. 20210
  38. 1392
  39. 1.023
  40. 0.04536

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