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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 544 · 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. 1.39.41 ÷ 100 =
  2. 2.100.4 ÷ 10 =
  3. 3.38.97 ÷ 10 =
  4. 4.42.65 ÷ 10 =
  5. 5.44.85 × 10 =
  6. 6.56.2 × 10 =
  7. 7.392.3 ÷ 1000 =
  8. 8.239.9 × 10 =
  9. 9.82.1 × 10 =
  10. 10.240.4 ÷ 1000 =
  11. 11.46.44 × 10 =
  12. 12.172.9 × 1000 =
  13. 13.4.92 × 10 =
  14. 14.40.51 × 1000 =
  15. 15.45.18 ÷ 1000 =
  16. 16.278.9 × 100 =
  17. 17.345.4 ÷ 10 =
  18. 18.336.7 × 100 =
  19. 19.8.03 × 10 =
  20. 20.30.69 ÷ 1000 =
  21. 21.127.8 × 10 =
  22. 22.14.68 × 1000 =
  23. 23.3.01 ÷ 1000 =
  24. 24.401.6 × 100 =
  25. 25.153.3 ÷ 10 =
  26. 26.354.7 × 100 =
  27. 27.19.38 ÷ 1000 =
  28. 28.240.6 × 10 =
  29. 29.4.12 × 100 =
  30. 30.27.38 ÷ 10 =
  31. 31.21.98 ÷ 10 =
  32. 32.220.5 ÷ 10 =
  33. 33.456.1 ÷ 1000 =
  34. 34.30.63 ÷ 10 =
  35. 35.220.8 × 10 =
  36. 36.39.67 × 10 =
  37. 37.47.76 ÷ 100 =
  38. 38.93.6 × 10 =
  39. 39.3.92 × 100 =
  40. 40.341.9 ÷ 100 =

Answer key

  1. 0.3941
  2. 10.04
  3. 3.897
  4. 4.265
  5. 448.5
  6. 562
  7. 0.3923
  8. 2399
  9. 821
  10. 0.2404
  11. 464.4
  12. 172900
  13. 49.2
  14. 40510
  15. 0.04518
  16. 27890
  17. 34.54
  18. 33670
  19. 80.3
  20. 0.03069
  21. 1278
  22. 14680
  23. 0.00301
  24. 40160
  25. 15.33
  26. 35470
  27. 0.01938
  28. 2406
  29. 412
  30. 2.738
  31. 2.198
  32. 22.05
  33. 0.4561
  34. 3.063
  35. 2208
  36. 396.7
  37. 0.4776
  38. 936
  39. 392
  40. 3.419

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