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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 103 · 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. 1.208.7 × 1000 =
  2. 2.28.11 × 1000 =
  3. 3.89.4 ÷ 1000 =
  4. 4.65.5 × 100 =
  5. 5.239.1 × 1000 =
  6. 6.292.6 ÷ 10 =
  7. 7.362.4 ÷ 10 =
  8. 8.11.57 × 1000 =
  9. 9.18.28 × 1000 =
  10. 10.94.8 ÷ 1000 =
  11. 11.21.52 × 1000 =
  12. 12.13.5 × 100 =
  13. 13.490.5 × 1000 =
  14. 14.15.64 ÷ 10 =
  15. 15.303.4 × 1000 =
  16. 16.143.2 ÷ 100 =
  17. 17.485.9 ÷ 10 =
  18. 18.11.84 × 100 =
  19. 19.466.6 × 10 =
  20. 20.31.07 ÷ 1000 =
  21. 21.63.1 × 10 =
  22. 22.401.7 ÷ 1000 =
  23. 23.1.69 × 10 =
  24. 24.18.51 × 1000 =
  25. 25.190.4 ÷ 100 =
  26. 26.20.36 ÷ 1000 =
  27. 27.14.47 × 10 =
  28. 28.19.16 × 100 =
  29. 29.1.31 × 100 =
  30. 30.70.1 × 100 =
  31. 31.456.3 ÷ 100 =
  32. 32.121.9 ÷ 10 =
  33. 33.14.22 ÷ 10 =
  34. 34.13.97 ÷ 100 =
  35. 35.38.21 ÷ 10 =
  36. 36.139.1 ÷ 100 =
  37. 37.290.3 × 100 =
  38. 38.123.5 ÷ 100 =
  39. 39.39.81 × 100 =
  40. 40.75.7 × 1000 =

Answer key

  1. 208700
  2. 28110
  3. 0.0894
  4. 6550
  5. 239100
  6. 29.26
  7. 36.24
  8. 11570
  9. 18280
  10. 0.0948
  11. 21520
  12. 1350
  13. 490500
  14. 1.564
  15. 303400
  16. 1.432
  17. 48.59
  18. 1184
  19. 4666
  20. 0.03107
  21. 631
  22. 0.4017
  23. 16.9
  24. 18510
  25. 1.904
  26. 0.02036
  27. 144.7
  28. 1916
  29. 131
  30. 7010
  31. 4.563
  32. 12.19
  33. 1.422
  34. 0.1397
  35. 3.821
  36. 1.391
  37. 29030
  38. 1.235
  39. 3981
  40. 75700

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