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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 963 · 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. 1.147.1 × 1000 =
  2. 2.304.9 × 10 =
  3. 3.26.81 × 1000 =
  4. 4.28.25 ÷ 100 =
  5. 5.1.23 × 1000 =
  6. 6.161.3 × 100 =
  7. 7.299.9 × 100 =
  8. 8.456.2 ÷ 1000 =
  9. 9.22.42 × 100 =
  10. 10.30.81 × 100 =
  11. 11.11.8 ÷ 1000 =
  12. 12.449.3 × 1000 =
  13. 13.21.68 ÷ 10 =
  14. 14.104.8 × 10 =
  15. 15.311.9 × 1000 =
  16. 16.23.06 ÷ 10 =
  17. 17.44.61 ÷ 100 =
  18. 18.341.8 × 10 =
  19. 19.347.5 × 10 =
  20. 20.270.2 ÷ 10 =
  21. 21.47.56 ÷ 1000 =
  22. 22.0.23 × 1000 =
  23. 23.0.36 × 10 =
  24. 24.29.86 × 100 =
  25. 25.31.04 ÷ 1000 =
  26. 26.33.63 ÷ 100 =
  27. 27.44.25 ÷ 100 =
  28. 28.427.6 × 100 =
  29. 29.285.6 × 100 =
  30. 30.107.1 × 10 =
  31. 31.29.04 ÷ 1000 =
  32. 32.385.1 ÷ 100 =
  33. 33.37.62 ÷ 1000 =
  34. 34.355.4 ÷ 1000 =
  35. 35.129.8 × 1000 =
  36. 36.402.3 ÷ 10 =
  37. 37.495.4 × 10 =
  38. 38.11.44 × 10 =
  39. 39.1.11 × 100 =
  40. 40.12.21 × 10 =

Answer key

  1. 147100
  2. 3049
  3. 26810
  4. 0.2825
  5. 1230
  6. 16130
  7. 29990
  8. 0.4562
  9. 2242
  10. 3081
  11. 0.0118
  12. 449300
  13. 2.168
  14. 1048
  15. 311900
  16. 2.306
  17. 0.4461
  18. 3418
  19. 3475
  20. 27.02
  21. 0.04756
  22. 230
  23. 3.6
  24. 2986
  25. 0.03104
  26. 0.3363
  27. 0.4425
  28. 42760
  29. 28560
  30. 1071
  31. 0.02904
  32. 3.851
  33. 0.03762
  34. 0.3554
  35. 129800
  36. 40.23
  37. 4954
  38. 114.4
  39. 111
  40. 122.1

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