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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 338 · 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. 1.10.25 × 10 =
  2. 2.218.6 ÷ 10 =
  3. 3.30.1 × 100 =
  4. 4.59.1 × 1000 =
  5. 5.86.3 × 10 =
  6. 6.47.49 × 10 =
  7. 7.8.16 × 100 =
  8. 8.1.69 ÷ 1000 =
  9. 9.29.8 ÷ 100 =
  10. 10.44.97 × 10 =
  11. 11.27.29 × 10 =
  12. 12.50.3 ÷ 100 =
  13. 13.303.2 × 10 =
  14. 14.8.98 × 1000 =
  15. 15.232.5 × 100 =
  16. 16.23.7 ÷ 1000 =
  17. 17.310.2 × 1000 =
  18. 18.15.46 × 100 =
  19. 19.14.94 ÷ 1000 =
  20. 20.74.6 × 1000 =
  21. 21.45.18 ÷ 1000 =
  22. 22.381.1 × 10 =
  23. 23.10.55 × 10 =
  24. 24.187.9 ÷ 1000 =
  25. 25.18.76 × 10 =
  26. 26.328.5 × 100 =
  27. 27.140.2 × 100 =
  28. 28.84.4 × 100 =
  29. 29.317.6 × 1000 =
  30. 30.38.03 × 100 =
  31. 31.14.84 × 100 =
  32. 32.18.97 × 1000 =
  33. 33.222.7 × 10 =
  34. 34.264.1 ÷ 1000 =
  35. 35.418.5 × 10 =
  36. 36.12.7 ÷ 1000 =
  37. 37.14.6 × 10 =
  38. 38.380.7 × 1000 =
  39. 39.37.51 ÷ 10 =
  40. 40.95.3 ÷ 100 =

Answer key

  1. 102.5
  2. 21.86
  3. 3010
  4. 59100
  5. 863
  6. 474.9
  7. 816
  8. 0.00169
  9. 0.298
  10. 449.7
  11. 272.9
  12. 0.503
  13. 3032
  14. 8980
  15. 23250
  16. 0.0237
  17. 310200
  18. 1546
  19. 0.01494
  20. 74600
  21. 0.04518
  22. 3811
  23. 105.5
  24. 0.1879
  25. 187.6
  26. 32850
  27. 14020
  28. 8440
  29. 317600
  30. 3803
  31. 1484
  32. 18970
  33. 2227
  34. 0.2641
  35. 4185
  36. 0.0127
  37. 146
  38. 380700
  39. 3.751
  40. 0.953

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