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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 485 · 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. 1.8.64 ÷ 10 =
  2. 2.38.53 × 100 =
  3. 3.24.22 ÷ 10 =
  4. 4.212.3 × 10 =
  5. 5.27.7 ÷ 10 =
  6. 6.338.5 × 100 =
  7. 7.476.2 × 10 =
  8. 8.318.2 × 100 =
  9. 9.361.4 ÷ 100 =
  10. 10.493.2 ÷ 10 =
  11. 11.30.37 × 1000 =
  12. 12.165.8 × 1000 =
  13. 13.4.48 × 100 =
  14. 14.28.04 × 10 =
  15. 15.101.7 ÷ 100 =
  16. 16.33.21 × 100 =
  17. 17.21.65 × 10 =
  18. 18.21.74 × 100 =
  19. 19.24.06 ÷ 10 =
  20. 20.311.1 × 10 =
  21. 21.42.1 × 1000 =
  22. 22.27.34 ÷ 1000 =
  23. 23.2.43 ÷ 1000 =
  24. 24.34.25 ÷ 10 =
  25. 25.6.64 ÷ 10 =
  26. 26.21.4 ÷ 100 =
  27. 27.460.4 × 1000 =
  28. 28.44.28 ÷ 100 =
  29. 29.272.6 ÷ 100 =
  30. 30.37.11 ÷ 10 =
  31. 31.33.94 × 100 =
  32. 32.482.3 × 1000 =
  33. 33.360.1 × 1000 =
  34. 34.141.1 × 1000 =
  35. 35.104.7 ÷ 10 =
  36. 36.291.2 ÷ 100 =
  37. 37.9.92 × 10 =
  38. 38.384.1 × 10 =
  39. 39.231.1 ÷ 100 =
  40. 40.75.9 ÷ 1000 =

Answer key

  1. 0.864
  2. 3853
  3. 2.422
  4. 2123
  5. 2.77
  6. 33850
  7. 4762
  8. 31820
  9. 3.614
  10. 49.32
  11. 30370
  12. 165800
  13. 448
  14. 280.4
  15. 1.017
  16. 3321
  17. 216.5
  18. 2174
  19. 2.406
  20. 3111
  21. 42100
  22. 0.02734
  23. 0.00243
  24. 3.425
  25. 0.664
  26. 0.214
  27. 460400
  28. 0.4428
  29. 2.726
  30. 3.711
  31. 3394
  32. 482300
  33. 360100
  34. 141100
  35. 10.47
  36. 2.912
  37. 99.2
  38. 3841
  39. 2.311
  40. 0.0759

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