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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 397 · 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. 1.30.18 ÷ 10 =
  2. 2.23.31 ÷ 1000 =
  3. 3.30.06 ÷ 10 =
  4. 4.25.63 ÷ 1000 =
  5. 5.12.81 ÷ 10 =
  6. 6.151.2 ÷ 100 =
  7. 7.278.5 ÷ 10 =
  8. 8.458.9 × 10 =
  9. 9.25.01 × 1000 =
  10. 10.37.54 × 1000 =
  11. 11.28.81 × 10 =
  12. 12.134.8 ÷ 100 =
  13. 13.20.79 ÷ 1000 =
  14. 14.366.2 × 10 =
  15. 15.19.31 ÷ 1000 =
  16. 16.4.5 ÷ 10 =
  17. 17.8.92 × 100 =
  18. 18.73.1 ÷ 100 =
  19. 19.361.3 × 100 =
  20. 20.25.67 × 100 =
  21. 21.12.61 ÷ 10 =
  22. 22.17.21 ÷ 10 =
  23. 23.29.26 × 1000 =
  24. 24.17.68 ÷ 1000 =
  25. 25.31.47 × 10 =
  26. 26.169.5 × 10 =
  27. 27.30.27 × 100 =
  28. 28.27.55 × 10 =
  29. 29.410.6 ÷ 10 =
  30. 30.11.58 × 1000 =
  31. 31.33.1 ÷ 1000 =
  32. 32.433.9 × 10 =
  33. 33.353.9 × 1000 =
  34. 34.104.5 ÷ 100 =
  35. 35.17.04 × 1000 =
  36. 36.17.61 ÷ 10 =
  37. 37.56.7 ÷ 1000 =
  38. 38.14.46 × 1000 =
  39. 39.405.6 × 1000 =
  40. 40.41.1 × 100 =

Answer key

  1. 3.018
  2. 0.02331
  3. 3.006
  4. 0.02563
  5. 1.281
  6. 1.512
  7. 27.85
  8. 4589
  9. 25010
  10. 37540
  11. 288.1
  12. 1.348
  13. 0.02079
  14. 3662
  15. 0.01931
  16. 0.45
  17. 892
  18. 0.731
  19. 36130
  20. 2567
  21. 1.261
  22. 1.721
  23. 29260
  24. 0.01768
  25. 314.7
  26. 1695
  27. 3027
  28. 275.5
  29. 41.06
  30. 11580
  31. 0.0331
  32. 4339
  33. 353900
  34. 1.045
  35. 17040
  36. 1.761
  37. 0.0567
  38. 14460
  39. 405600
  40. 4110

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