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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 977 · 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. 1.370.8 ÷ 100 =
  2. 2.2.48 × 100 =
  3. 3.49.01 × 100 =
  4. 4.17.15 × 10 =
  5. 5.309.2 × 100 =
  6. 6.176.4 × 1000 =
  7. 7.233.1 ÷ 10 =
  8. 8.157.2 × 1000 =
  9. 9.34.16 × 10 =
  10. 10.310.3 ÷ 1000 =
  11. 11.316.1 ÷ 1000 =
  12. 12.6.51 ÷ 10 =
  13. 13.89.8 ÷ 10 =
  14. 14.6.81 × 1000 =
  15. 15.2.51 × 100 =
  16. 16.141.5 ÷ 10 =
  17. 17.31.63 × 10 =
  18. 18.81.6 × 1000 =
  19. 19.51.8 × 10 =
  20. 20.6.02 × 10 =
  21. 21.492.6 ÷ 10 =
  22. 22.24.46 × 1000 =
  23. 23.492.3 × 100 =
  24. 24.98.9 × 10 =
  25. 25.63.5 × 100 =
  26. 26.48.19 × 10 =
  27. 27.165.1 ÷ 1000 =
  28. 28.242.1 × 10 =
  29. 29.38.32 ÷ 1000 =
  30. 30.17.93 ÷ 1000 =
  31. 31.37.86 × 1000 =
  32. 32.19.31 ÷ 1000 =
  33. 33.373.9 × 100 =
  34. 34.311.8 × 10 =
  35. 35.38.48 ÷ 100 =
  36. 36.422.1 ÷ 100 =
  37. 37.26.96 × 1000 =
  38. 38.147.6 × 10 =
  39. 39.14.14 × 10 =
  40. 40.33.65 × 1000 =

Answer key

  1. 3.708
  2. 248
  3. 4901
  4. 171.5
  5. 30920
  6. 176400
  7. 23.31
  8. 157200
  9. 341.6
  10. 0.3103
  11. 0.3161
  12. 0.651
  13. 8.98
  14. 6810
  15. 251
  16. 14.15
  17. 316.3
  18. 81600
  19. 518
  20. 60.2
  21. 49.26
  22. 24460
  23. 49230
  24. 989
  25. 6350
  26. 481.9
  27. 0.1651
  28. 2421
  29. 0.03832
  30. 0.01793
  31. 37860
  32. 0.01931
  33. 37390
  34. 3118
  35. 0.3848
  36. 4.221
  37. 26960
  38. 1476
  39. 141.4
  40. 33650

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