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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 122 · 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. 1.2.15 ÷ 10 =
  2. 2.85.6 × 10 =
  3. 3.29.3 × 1000 =
  4. 4.16.39 ÷ 10 =
  5. 5.29.84 × 1000 =
  6. 6.8.51 ÷ 100 =
  7. 7.26.87 ÷ 100 =
  8. 8.99.8 ÷ 100 =
  9. 9.268.9 ÷ 1000 =
  10. 10.2.11 × 100 =
  11. 11.148.5 × 1000 =
  12. 12.156.2 × 1000 =
  13. 13.238.5 ÷ 10 =
  14. 14.382.1 × 10 =
  15. 15.485.1 × 1000 =
  16. 16.350.4 ÷ 100 =
  17. 17.33.81 ÷ 100 =
  18. 18.145.7 ÷ 10 =
  19. 19.471.1 × 10 =
  20. 20.35.33 ÷ 1000 =
  21. 21.265.4 ÷ 100 =
  22. 22.469.2 × 1000 =
  23. 23.75.3 × 100 =
  24. 24.49.99 × 100 =
  25. 25.110.4 × 10 =
  26. 26.425.5 ÷ 1000 =
  27. 27.324.1 ÷ 10 =
  28. 28.10.39 ÷ 100 =
  29. 29.95.8 ÷ 10 =
  30. 30.294.8 ÷ 10 =
  31. 31.154.8 × 100 =
  32. 32.151.6 × 1000 =
  33. 33.28.63 × 100 =
  34. 34.326.4 × 1000 =
  35. 35.92.7 ÷ 10 =
  36. 36.24.01 ÷ 10 =
  37. 37.29.08 × 100 =
  38. 38.44.18 ÷ 100 =
  39. 39.92.1 × 100 =
  40. 40.47.9 × 10 =

Answer key

  1. 0.215
  2. 856
  3. 29300
  4. 1.639
  5. 29840
  6. 0.0851
  7. 0.2687
  8. 0.998
  9. 0.2689
  10. 211
  11. 148500
  12. 156200
  13. 23.85
  14. 3821
  15. 485100
  16. 3.504
  17. 0.3381
  18. 14.57
  19. 4711
  20. 0.03533
  21. 2.654
  22. 469200
  23. 7530
  24. 4999
  25. 1104
  26. 0.4255
  27. 32.41
  28. 0.1039
  29. 9.58
  30. 29.48
  31. 15480
  32. 151600
  33. 2863
  34. 326400
  35. 9.27
  36. 2.401
  37. 2908
  38. 0.4418
  39. 9210
  40. 479

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