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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 983 · 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. 1.49.81 ÷ 10 =
  2. 2.31.1 × 10 =
  3. 3.32.77 × 1000 =
  4. 4.9.07 × 1000 =
  5. 5.411.8 × 10 =
  6. 6.312.8 × 1000 =
  7. 7.45.3 ÷ 1000 =
  8. 8.36.11 × 100 =
  9. 9.418.9 × 1000 =
  10. 10.361.3 ÷ 1000 =
  11. 11.487.2 × 100 =
  12. 12.484.1 × 10 =
  13. 13.176.3 × 10 =
  14. 14.316.5 ÷ 100 =
  15. 15.395.8 ÷ 100 =
  16. 16.351.5 ÷ 100 =
  17. 17.18.08 ÷ 100 =
  18. 18.112.7 ÷ 100 =
  19. 19.386.6 × 100 =
  20. 20.40.01 × 10 =
  21. 21.120.1 × 10 =
  22. 22.151.1 × 1000 =
  23. 23.210.6 ÷ 1000 =
  24. 24.203.5 × 100 =
  25. 25.115.9 × 100 =
  26. 26.175.3 × 1000 =
  27. 27.144.3 × 1000 =
  28. 28.125.1 × 10 =
  29. 29.28.38 × 1000 =
  30. 30.36.44 ÷ 1000 =
  31. 31.9.51 × 10 =
  32. 32.375.3 ÷ 1000 =
  33. 33.235.2 × 10 =
  34. 34.481.9 ÷ 10 =
  35. 35.281.6 × 100 =
  36. 36.48.98 × 100 =
  37. 37.156.2 ÷ 10 =
  38. 38.377.1 × 10 =
  39. 39.0.24 × 10 =
  40. 40.374.2 × 100 =

Answer key

  1. 4.981
  2. 311
  3. 32770
  4. 9070
  5. 4118
  6. 312800
  7. 0.0453
  8. 3611
  9. 418900
  10. 0.3613
  11. 48720
  12. 4841
  13. 1763
  14. 3.165
  15. 3.958
  16. 3.515
  17. 0.1808
  18. 1.127
  19. 38660
  20. 400.1
  21. 1201
  22. 151100
  23. 0.2106
  24. 20350
  25. 11590
  26. 175300
  27. 144300
  28. 1251
  29. 28380
  30. 0.03644
  31. 95.1
  32. 0.3753
  33. 2352
  34. 48.19
  35. 28160
  36. 4898
  37. 15.62
  38. 3771
  39. 2.4
  40. 37420

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