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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 556 · 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. 1.320.8 × 1000 =
  2. 2.259.2 ÷ 1000 =
  3. 3.19.42 × 1000 =
  4. 4.42.25 ÷ 10 =
  5. 5.375.2 × 100 =
  6. 6.46.74 × 100 =
  7. 7.12.26 × 100 =
  8. 8.187.8 × 1000 =
  9. 9.264.1 ÷ 100 =
  10. 10.17.61 × 1000 =
  11. 11.22.47 ÷ 10 =
  12. 12.2.46 × 100 =
  13. 13.362.7 ÷ 100 =
  14. 14.271.1 × 1000 =
  15. 15.27.74 ÷ 100 =
  16. 16.232.2 × 100 =
  17. 17.92.7 ÷ 1000 =
  18. 18.47.21 × 10 =
  19. 19.28.49 × 10 =
  20. 20.29.26 × 10 =
  21. 21.15.27 × 100 =
  22. 22.17.03 ÷ 100 =
  23. 23.36.67 ÷ 1000 =
  24. 24.1.65 ÷ 10 =
  25. 25.433.5 ÷ 1000 =
  26. 26.44.35 ÷ 1000 =
  27. 27.349.9 ÷ 10 =
  28. 28.12.69 ÷ 100 =
  29. 29.32.62 × 10 =
  30. 30.438.3 × 10 =
  31. 31.342.5 ÷ 1000 =
  32. 32.20.9 ÷ 10 =
  33. 33.261.3 × 10 =
  34. 34.234.2 × 100 =
  35. 35.446.9 × 1000 =
  36. 36.369.7 × 1000 =
  37. 37.14.51 × 10 =
  38. 38.31.81 ÷ 10 =
  39. 39.475.9 ÷ 10 =
  40. 40.308.9 × 1000 =

Answer key

  1. 320800
  2. 0.2592
  3. 19420
  4. 4.225
  5. 37520
  6. 4674
  7. 1226
  8. 187800
  9. 2.641
  10. 17610
  11. 2.247
  12. 246
  13. 3.627
  14. 271100
  15. 0.2774
  16. 23220
  17. 0.0927
  18. 472.1
  19. 284.9
  20. 292.6
  21. 1527
  22. 0.1703
  23. 0.03667
  24. 0.165
  25. 0.4335
  26. 0.04435
  27. 34.99
  28. 0.1269
  29. 326.2
  30. 4383
  31. 0.3425
  32. 2.09
  33. 2613
  34. 23420
  35. 446900
  36. 369700
  37. 145.1
  38. 3.181
  39. 47.59
  40. 308900

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