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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 793 · 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. 1.6.09 × 1000 =
  2. 2.421.6 × 100 =
  3. 3.40.93 × 100 =
  4. 4.148.4 ÷ 10 =
  5. 5.22.39 × 100 =
  6. 6.198.2 ÷ 100 =
  7. 7.387.5 ÷ 1000 =
  8. 8.180.5 ÷ 1000 =
  9. 9.178.2 × 1000 =
  10. 10.104.3 × 100 =
  11. 11.38.74 × 10 =
  12. 12.6.81 × 10 =
  13. 13.373.3 ÷ 1000 =
  14. 14.284.1 × 10 =
  15. 15.316.1 × 1000 =
  16. 16.302.4 ÷ 10 =
  17. 17.198.1 × 10 =
  18. 18.48.19 ÷ 1000 =
  19. 19.468.1 × 10 =
  20. 20.163.9 × 10 =
  21. 21.47.56 × 10 =
  22. 22.306.1 × 100 =
  23. 23.39.24 ÷ 1000 =
  24. 24.10.92 ÷ 10 =
  25. 25.51.9 × 10 =
  26. 26.26.94 ÷ 1000 =
  27. 27.158.4 × 1000 =
  28. 28.22.51 × 10 =
  29. 29.42.8 ÷ 100 =
  30. 30.57.3 × 1000 =
  31. 31.250.5 × 1000 =
  32. 32.44.71 × 10 =
  33. 33.0.47 ÷ 1000 =
  34. 34.28.99 ÷ 10 =
  35. 35.397.1 ÷ 10 =
  36. 36.267.1 × 100 =
  37. 37.27.7 × 100 =
  38. 38.8.5 × 10 =
  39. 39.247.9 ÷ 10 =
  40. 40.28.21 ÷ 100 =

Answer key

  1. 6090
  2. 42160
  3. 4093
  4. 14.84
  5. 2239
  6. 1.982
  7. 0.3875
  8. 0.1805
  9. 178200
  10. 10430
  11. 387.4
  12. 68.1
  13. 0.3733
  14. 2841
  15. 316100
  16. 30.24
  17. 1981
  18. 0.04819
  19. 4681
  20. 1639
  21. 475.6
  22. 30610
  23. 0.03924
  24. 1.092
  25. 519
  26. 0.02694
  27. 158400
  28. 225.1
  29. 0.428
  30. 57300
  31. 250500
  32. 447.1
  33. 0.00047
  34. 2.899
  35. 39.71
  36. 26710
  37. 2770
  38. 85
  39. 24.79
  40. 0.2821

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