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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 25 · 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. 1.264.1 × 100 =
  2. 2.478.1 ÷ 100 =
  3. 3.34.52 × 10 =
  4. 4.25.22 × 1000 =
  5. 5.104.3 ÷ 10 =
  6. 6.468.1 × 100 =
  7. 7.6.94 ÷ 10 =
  8. 8.329.1 × 1000 =
  9. 9.345.8 ÷ 100 =
  10. 10.27.73 ÷ 1000 =
  11. 11.10.55 × 100 =
  12. 12.112.4 × 100 =
  13. 13.82.8 ÷ 100 =
  14. 14.72.1 ÷ 10 =
  15. 15.21.21 × 1000 =
  16. 16.41.26 × 1000 =
  17. 17.30.87 ÷ 1000 =
  18. 18.349.2 × 10 =
  19. 19.404.8 ÷ 10 =
  20. 20.20.14 × 10 =
  21. 21.93.9 × 10 =
  22. 22.45.25 ÷ 100 =
  23. 23.23.41 ÷ 1000 =
  24. 24.37.42 × 100 =
  25. 25.386.6 × 100 =
  26. 26.56.1 × 100 =
  27. 27.44.29 × 1000 =
  28. 28.410.7 × 1000 =
  29. 29.10.74 ÷ 10 =
  30. 30.7.22 ÷ 100 =
  31. 31.55.8 ÷ 100 =
  32. 32.44.5 ÷ 100 =
  33. 33.415.3 × 10 =
  34. 34.328.9 ÷ 10 =
  35. 35.30.2 ÷ 10 =
  36. 36.19.53 × 1000 =
  37. 37.3.77 × 1000 =
  38. 38.333.1 × 10 =
  39. 39.2.09 ÷ 10 =
  40. 40.100.8 × 1000 =

Answer key

  1. 26410
  2. 4.781
  3. 345.2
  4. 25220
  5. 10.43
  6. 46810
  7. 0.694
  8. 329100
  9. 3.458
  10. 0.02773
  11. 1055
  12. 11240
  13. 0.828
  14. 7.21
  15. 21210
  16. 41260
  17. 0.03087
  18. 3492
  19. 40.48
  20. 201.4
  21. 939
  22. 0.4525
  23. 0.02341
  24. 3742
  25. 38660
  26. 5610
  27. 44290
  28. 410700
  29. 1.074
  30. 0.0722
  31. 0.558
  32. 0.445
  33. 4153
  34. 32.89
  35. 3.02
  36. 19530
  37. 3770
  38. 3331
  39. 0.209
  40. 100800

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