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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 925 · 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. 1.24.27 × 100 =
  2. 2.128.1 ÷ 1000 =
  3. 3.11.31 ÷ 1000 =
  4. 4.78.5 × 1000 =
  5. 5.155.6 ÷ 100 =
  6. 6.39.2 × 1000 =
  7. 7.418.1 × 100 =
  8. 8.153.4 ÷ 10 =
  9. 9.27.92 × 100 =
  10. 10.2.99 ÷ 100 =
  11. 11.332.4 × 1000 =
  12. 12.1.79 × 1000 =
  13. 13.45.2 × 10 =
  14. 14.16.11 ÷ 1000 =
  15. 15.45.42 × 10 =
  16. 16.8.88 × 10 =
  17. 17.11.71 × 10 =
  18. 18.452.9 × 1000 =
  19. 19.159.3 × 1000 =
  20. 20.365.3 × 1000 =
  21. 21.28.51 ÷ 1000 =
  22. 22.263.4 ÷ 10 =
  23. 23.145.5 ÷ 10 =
  24. 24.382.3 × 10 =
  25. 25.14.1 ÷ 1000 =
  26. 26.134.1 ÷ 100 =
  27. 27.137.5 ÷ 1000 =
  28. 28.20.09 ÷ 10 =
  29. 29.13.17 ÷ 1000 =
  30. 30.11.31 × 10 =
  31. 31.422.1 ÷ 10 =
  32. 32.6.37 ÷ 1000 =
  33. 33.68.8 × 10 =
  34. 34.72.5 × 100 =
  35. 35.226.8 ÷ 1000 =
  36. 36.30.41 ÷ 100 =
  37. 37.8.77 × 10 =
  38. 38.12.16 × 10 =
  39. 39.0.37 ÷ 10 =
  40. 40.0.35 × 1000 =

Answer key

  1. 2427
  2. 0.1281
  3. 0.01131
  4. 78500
  5. 1.556
  6. 39200
  7. 41810
  8. 15.34
  9. 2792
  10. 0.0299
  11. 332400
  12. 1790
  13. 452
  14. 0.01611
  15. 454.2
  16. 88.8
  17. 117.1
  18. 452900
  19. 159300
  20. 365300
  21. 0.02851
  22. 26.34
  23. 14.55
  24. 3823
  25. 0.0141
  26. 1.341
  27. 0.1375
  28. 2.009
  29. 0.01317
  30. 113.1
  31. 42.21
  32. 0.00637
  33. 688
  34. 7250
  35. 0.2268
  36. 0.3041
  37. 87.7
  38. 121.6
  39. 0.037
  40. 350

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