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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 929 · 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. 1.35.45 × 1000 =
  2. 2.128.4 ÷ 10 =
  3. 3.62.1 × 10 =
  4. 4.37.16 × 10 =
  5. 5.2.31 × 10 =
  6. 6.14.91 ÷ 10 =
  7. 7.423.5 × 10 =
  8. 8.173.7 ÷ 1000 =
  9. 9.10.65 ÷ 1000 =
  10. 10.12.41 × 1000 =
  11. 11.380.5 × 100 =
  12. 12.25.56 × 10 =
  13. 13.32.75 × 10 =
  14. 14.12.09 ÷ 10 =
  15. 15.41.13 ÷ 10 =
  16. 16.14.02 ÷ 10 =
  17. 17.38.44 × 100 =
  18. 18.78.5 ÷ 1000 =
  19. 19.12.04 ÷ 1000 =
  20. 20.114.9 ÷ 100 =
  21. 21.474.3 ÷ 10 =
  22. 22.28.04 ÷ 10 =
  23. 23.352.8 ÷ 10 =
  24. 24.315.1 × 100 =
  25. 25.428.9 × 10 =
  26. 26.24.18 × 10 =
  27. 27.11.26 ÷ 10 =
  28. 28.27.11 × 10 =
  29. 29.305.7 × 10 =
  30. 30.32.64 ÷ 10 =
  31. 31.469.6 × 1000 =
  32. 32.30.92 ÷ 10 =
  33. 33.45.31 × 10 =
  34. 34.24.64 × 1000 =
  35. 35.12.66 × 1000 =
  36. 36.36.61 ÷ 10 =
  37. 37.68.1 ÷ 100 =
  38. 38.23.02 × 10 =
  39. 39.125.8 × 10 =
  40. 40.420.8 × 10 =

Answer key

  1. 35450
  2. 12.84
  3. 621
  4. 371.6
  5. 23.1
  6. 1.491
  7. 4235
  8. 0.1737
  9. 0.01065
  10. 12410
  11. 38050
  12. 255.6
  13. 327.5
  14. 1.209
  15. 4.113
  16. 1.402
  17. 3844
  18. 0.0785
  19. 0.01204
  20. 1.149
  21. 47.43
  22. 2.804
  23. 35.28
  24. 31510
  25. 4289
  26. 241.8
  27. 1.126
  28. 271.1
  29. 3057
  30. 3.264
  31. 469600
  32. 3.092
  33. 453.1
  34. 24640
  35. 12660
  36. 3.661
  37. 0.681
  38. 230.2
  39. 1258
  40. 4208

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