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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 346 · 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. 1.17.14 × 100 =
  2. 2.237.5 × 1000 =
  3. 3.30.21 ÷ 100 =
  4. 4.27.36 ÷ 10 =
  5. 5.134.5 × 1000 =
  6. 6.2.54 × 1000 =
  7. 7.10.13 × 10 =
  8. 8.9.16 ÷ 1000 =
  9. 9.107.3 ÷ 100 =
  10. 10.397.9 ÷ 100 =
  11. 11.17.69 × 10 =
  12. 12.222.6 × 10 =
  13. 13.145.4 ÷ 10 =
  14. 14.6.59 × 100 =
  15. 15.8.81 ÷ 10 =
  16. 16.27.96 × 10 =
  17. 17.48.59 ÷ 100 =
  18. 18.409.1 × 100 =
  19. 19.309.9 × 10 =
  20. 20.18.94 ÷ 10 =
  21. 21.405.7 ÷ 10 =
  22. 22.10.71 ÷ 100 =
  23. 23.433.5 × 10 =
  24. 24.10.47 ÷ 100 =
  25. 25.12.04 × 100 =
  26. 26.207.1 × 100 =
  27. 27.354.3 × 10 =
  28. 28.213.1 × 100 =
  29. 29.3.68 × 1000 =
  30. 30.200.6 × 100 =
  31. 31.198.5 ÷ 10 =
  32. 32.338.1 × 10 =
  33. 33.27.01 × 1000 =
  34. 34.13.3 × 1000 =
  35. 35.156.7 × 10 =
  36. 36.41.3 × 100 =
  37. 37.33.46 ÷ 1000 =
  38. 38.29.34 × 1000 =
  39. 39.27.4 ÷ 100 =
  40. 40.6.21 × 10 =

Answer key

  1. 1714
  2. 237500
  3. 0.3021
  4. 2.736
  5. 134500
  6. 2540
  7. 101.3
  8. 0.00916
  9. 1.073
  10. 3.979
  11. 176.9
  12. 2226
  13. 14.54
  14. 659
  15. 0.881
  16. 279.6
  17. 0.4859
  18. 40910
  19. 3099
  20. 1.894
  21. 40.57
  22. 0.1071
  23. 4335
  24. 0.1047
  25. 1204
  26. 20710
  27. 3543
  28. 21310
  29. 3680
  30. 20060
  31. 19.85
  32. 3381
  33. 27010
  34. 13300
  35. 1567
  36. 4130
  37. 0.03346
  38. 29340
  39. 0.274
  40. 62.1

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