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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 892 · 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. 1.89.3 ÷ 1000 =
  2. 2.158.4 ÷ 10 =
  3. 3.12.8 × 10 =
  4. 4.407.9 ÷ 100 =
  5. 5.362.2 ÷ 10 =
  6. 6.157.3 ÷ 1000 =
  7. 7.16.09 × 10 =
  8. 8.252.5 × 100 =
  9. 9.1.81 ÷ 1000 =
  10. 10.28.29 × 10 =
  11. 11.392.2 × 10 =
  12. 12.300.6 × 1000 =
  13. 13.42.55 × 10 =
  14. 14.398.8 ÷ 10 =
  15. 15.5.74 × 10 =
  16. 16.450.1 × 10 =
  17. 17.23.95 × 100 =
  18. 18.326.7 × 100 =
  19. 19.33.85 × 100 =
  20. 20.28.63 ÷ 1000 =
  21. 21.95.1 × 1000 =
  22. 22.47.55 × 10 =
  23. 23.14.52 ÷ 10 =
  24. 24.27.95 × 1000 =
  25. 25.17.38 ÷ 100 =
  26. 26.225.3 ÷ 100 =
  27. 27.65.7 ÷ 10 =
  28. 28.202.4 ÷ 10 =
  29. 29.202.1 ÷ 10 =
  30. 30.9.54 ÷ 10 =
  31. 31.7.25 ÷ 100 =
  32. 32.494.8 ÷ 100 =
  33. 33.48.45 × 1000 =
  34. 34.480.7 × 100 =
  35. 35.74.9 ÷ 1000 =
  36. 36.463.1 × 10 =
  37. 37.8.07 ÷ 1000 =
  38. 38.11.94 ÷ 10 =
  39. 39.29.08 × 10 =
  40. 40.4.26 × 10 =

Answer key

  1. 0.0893
  2. 15.84
  3. 128
  4. 4.079
  5. 36.22
  6. 0.1573
  7. 160.9
  8. 25250
  9. 0.00181
  10. 282.9
  11. 3922
  12. 300600
  13. 425.5
  14. 39.88
  15. 57.4
  16. 4501
  17. 2395
  18. 32670
  19. 3385
  20. 0.02863
  21. 95100
  22. 475.5
  23. 1.452
  24. 27950
  25. 0.1738
  26. 2.253
  27. 6.57
  28. 20.24
  29. 20.21
  30. 0.954
  31. 0.0725
  32. 4.948
  33. 48450
  34. 48070
  35. 0.0749
  36. 4631
  37. 0.00807
  38. 1.194
  39. 290.8
  40. 42.6

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