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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 717 · 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. 1.18.5 ÷ 10 =
  2. 2.27.22 × 10 =
  3. 3.455.9 ÷ 1000 =
  4. 4.336.8 ÷ 10 =
  5. 5.47.81 ÷ 1000 =
  6. 6.149.6 ÷ 100 =
  7. 7.289.4 ÷ 10 =
  8. 8.20.47 ÷ 10 =
  9. 9.10.28 × 1000 =
  10. 10.457.1 ÷ 100 =
  11. 11.24.91 ÷ 100 =
  12. 12.44.53 × 1000 =
  13. 13.39.9 × 100 =
  14. 14.4.38 × 100 =
  15. 15.11.3 × 100 =
  16. 16.210.5 ÷ 10 =
  17. 17.449.3 × 10 =
  18. 18.18.27 ÷ 100 =
  19. 19.33.65 ÷ 10 =
  20. 20.10.82 × 100 =
  21. 21.15.19 ÷ 100 =
  22. 22.444.8 × 1000 =
  23. 23.17.92 ÷ 10 =
  24. 24.25.91 × 100 =
  25. 25.316.4 × 10 =
  26. 26.435.9 ÷ 1000 =
  27. 27.24.91 × 100 =
  28. 28.448.1 ÷ 10 =
  29. 29.2.77 ÷ 10 =
  30. 30.488.7 ÷ 1000 =
  31. 31.328.7 × 100 =
  32. 32.394.5 ÷ 100 =
  33. 33.24.67 ÷ 100 =
  34. 34.197.4 × 10 =
  35. 35.397.9 ÷ 100 =
  36. 36.28.01 × 10 =
  37. 37.295.4 × 10 =
  38. 38.38.1 ÷ 100 =
  39. 39.43.61 × 1000 =
  40. 40.367.6 × 10 =

Answer key

  1. 1.85
  2. 272.2
  3. 0.4559
  4. 33.68
  5. 0.04781
  6. 1.496
  7. 28.94
  8. 2.047
  9. 10280
  10. 4.571
  11. 0.2491
  12. 44530
  13. 3990
  14. 438
  15. 1130
  16. 21.05
  17. 4493
  18. 0.1827
  19. 3.365
  20. 1082
  21. 0.1519
  22. 444800
  23. 1.792
  24. 2591
  25. 3164
  26. 0.4359
  27. 2491
  28. 44.81
  29. 0.277
  30. 0.4887
  31. 32870
  32. 3.945
  33. 0.2467
  34. 1974
  35. 3.979
  36. 280.1
  37. 2954
  38. 0.381
  39. 43610
  40. 3676

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