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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 996 · 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. 1.360.1 ÷ 1000 =
  2. 2.499.3 ÷ 1000 =
  3. 3.360.3 × 100 =
  4. 4.17.21 × 10 =
  5. 5.36.3 ÷ 100 =
  6. 6.172.7 ÷ 1000 =
  7. 7.348.1 × 10 =
  8. 8.246.5 × 100 =
  9. 9.207.4 ÷ 10 =
  10. 10.25.28 × 10 =
  11. 11.18.31 × 100 =
  12. 12.12.13 ÷ 10 =
  13. 13.19.78 ÷ 10 =
  14. 14.358.4 × 100 =
  15. 15.451.1 × 10 =
  16. 16.19.89 ÷ 1000 =
  17. 17.489.1 ÷ 10 =
  18. 18.12.88 ÷ 10 =
  19. 19.26.87 ÷ 1000 =
  20. 20.35.02 × 1000 =
  21. 21.194.2 ÷ 10 =
  22. 22.271.2 × 10 =
  23. 23.32.95 × 10 =
  24. 24.354.3 ÷ 100 =
  25. 25.59.8 × 10 =
  26. 26.4.45 × 1000 =
  27. 27.31.72 ÷ 1000 =
  28. 28.24.35 × 1000 =
  29. 29.251.1 ÷ 10 =
  30. 30.294.2 ÷ 100 =
  31. 31.42.48 × 1000 =
  32. 32.128.7 × 10 =
  33. 33.12.89 × 100 =
  34. 34.11.87 ÷ 100 =
  35. 35.217.1 × 10 =
  36. 36.309.5 × 100 =
  37. 37.469.4 ÷ 1000 =
  38. 38.153.4 × 1000 =
  39. 39.19.26 ÷ 100 =
  40. 40.5.26 ÷ 10 =

Answer key

  1. 0.3601
  2. 0.4993
  3. 36030
  4. 172.1
  5. 0.363
  6. 0.1727
  7. 3481
  8. 24650
  9. 20.74
  10. 252.8
  11. 1831
  12. 1.213
  13. 1.978
  14. 35840
  15. 4511
  16. 0.01989
  17. 48.91
  18. 1.288
  19. 0.02687
  20. 35020
  21. 19.42
  22. 2712
  23. 329.5
  24. 3.543
  25. 598
  26. 4450
  27. 0.03172
  28. 24350
  29. 25.11
  30. 2.942
  31. 42480
  32. 1287
  33. 1289
  34. 0.1187
  35. 2171
  36. 30950
  37. 0.4694
  38. 153400
  39. 0.1926
  40. 0.526

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