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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 150 · 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. 1.9.01 × 10 =
  2. 2.277.1 × 10 =
  3. 3.188.9 × 1000 =
  4. 4.38.9 × 1000 =
  5. 5.47.84 × 1000 =
  6. 6.43.46 ÷ 100 =
  7. 7.26.59 × 1000 =
  8. 8.8.91 × 10 =
  9. 9.175.1 ÷ 100 =
  10. 10.11.71 ÷ 1000 =
  11. 11.210.7 × 1000 =
  12. 12.83.8 × 10 =
  13. 13.372.9 × 10 =
  14. 14.180.6 × 10 =
  15. 15.117.5 ÷ 1000 =
  16. 16.40.67 ÷ 10 =
  17. 17.38.94 × 10 =
  18. 18.253.2 ÷ 10 =
  19. 19.7.91 × 10 =
  20. 20.48.31 ÷ 1000 =
  21. 21.2.16 × 10 =
  22. 22.71.6 × 10 =
  23. 23.1.64 × 10 =
  24. 24.162.2 ÷ 10 =
  25. 25.331.8 ÷ 100 =
  26. 26.43.54 ÷ 1000 =
  27. 27.25.16 ÷ 1000 =
  28. 28.331.8 ÷ 1000 =
  29. 29.16.81 × 100 =
  30. 30.254.3 × 1000 =
  31. 31.146.4 × 100 =
  32. 32.9.27 × 100 =
  33. 33.21.48 × 100 =
  34. 34.2.48 ÷ 1000 =
  35. 35.11.82 × 100 =
  36. 36.308.5 × 100 =
  37. 37.56.6 ÷ 100 =
  38. 38.131.1 ÷ 10 =
  39. 39.46.39 ÷ 10 =
  40. 40.175.4 ÷ 100 =

Answer key

  1. 90.1
  2. 2771
  3. 188900
  4. 38900
  5. 47840
  6. 0.4346
  7. 26590
  8. 89.1
  9. 1.751
  10. 0.01171
  11. 210700
  12. 838
  13. 3729
  14. 1806
  15. 0.1175
  16. 4.067
  17. 389.4
  18. 25.32
  19. 79.1
  20. 0.04831
  21. 21.6
  22. 716
  23. 16.4
  24. 16.22
  25. 3.318
  26. 0.04354
  27. 0.02516
  28. 0.3318
  29. 1681
  30. 254300
  31. 14640
  32. 927
  33. 2148
  34. 0.00248
  35. 1182
  36. 30850
  37. 0.566
  38. 13.11
  39. 4.639
  40. 1.754

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