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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 967 · 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. 1.0.15 × 100 =
  2. 2.0.79 × 1000 =
  3. 3.15.88 × 10 =
  4. 4.17.81 × 1000 =
  5. 5.288.9 × 10 =
  6. 6.265.1 × 10 =
  7. 7.28.39 × 100 =
  8. 8.418.8 × 100 =
  9. 9.248.1 × 1000 =
  10. 10.79.1 × 1000 =
  11. 11.248.5 × 100 =
  12. 12.30.73 × 100 =
  13. 13.14.23 ÷ 1000 =
  14. 14.7.59 ÷ 1000 =
  15. 15.99.2 × 1000 =
  16. 16.16.27 ÷ 10 =
  17. 17.98.9 ÷ 10 =
  18. 18.177.6 × 1000 =
  19. 19.22.4 × 10 =
  20. 20.40.4 ÷ 100 =
  21. 21.128.9 × 10 =
  22. 22.42.28 ÷ 1000 =
  23. 23.10.26 × 10 =
  24. 24.9.79 × 10 =
  25. 25.31.52 ÷ 10 =
  26. 26.24.73 ÷ 10 =
  27. 27.34.64 ÷ 100 =
  28. 28.173.1 ÷ 1000 =
  29. 29.12.18 × 10 =
  30. 30.353.3 × 1000 =
  31. 31.88.6 ÷ 10 =
  32. 32.378.1 × 100 =
  33. 33.192.6 × 10 =
  34. 34.234.7 × 1000 =
  35. 35.10.35 × 100 =
  36. 36.30.92 × 100 =
  37. 37.356.2 × 10 =
  38. 38.197.7 ÷ 100 =
  39. 39.2.58 × 10 =
  40. 40.2.34 × 100 =

Answer key

  1. 15
  2. 790
  3. 158.8
  4. 17810
  5. 2889
  6. 2651
  7. 2839
  8. 41880
  9. 248100
  10. 79100
  11. 24850
  12. 3073
  13. 0.01423
  14. 0.00759
  15. 99200
  16. 1.627
  17. 9.89
  18. 177600
  19. 224
  20. 0.404
  21. 1289
  22. 0.04228
  23. 102.6
  24. 97.9
  25. 3.152
  26. 2.473
  27. 0.3464
  28. 0.1731
  29. 121.8
  30. 353300
  31. 8.86
  32. 37810
  33. 1926
  34. 234700
  35. 1035
  36. 3092
  37. 3562
  38. 1.977
  39. 25.8
  40. 234

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