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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 379 · 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. 1.79.3 × 1000 =
  2. 2.2.27 × 10 =
  3. 3.475.8 ÷ 100 =
  4. 4.35.91 × 10 =
  5. 5.497.9 ÷ 10 =
  6. 6.43.7 ÷ 10 =
  7. 7.139.3 × 1000 =
  8. 8.8.9 × 1000 =
  9. 9.46.16 ÷ 10 =
  10. 10.1.71 ÷ 100 =
  11. 11.463.2 ÷ 100 =
  12. 12.462.1 ÷ 10 =
  13. 13.211.4 × 100 =
  14. 14.37.88 × 100 =
  15. 15.200.1 × 10 =
  16. 16.248.3 × 10 =
  17. 17.34.38 × 10 =
  18. 18.284.3 ÷ 100 =
  19. 19.16.17 × 1000 =
  20. 20.40.46 × 100 =
  21. 21.2.48 × 1000 =
  22. 22.263.7 × 1000 =
  23. 23.162.6 × 1000 =
  24. 24.21.72 ÷ 1000 =
  25. 25.26.46 ÷ 10 =
  26. 26.285.2 × 100 =
  27. 27.38.65 × 100 =
  28. 28.26.31 × 1000 =
  29. 29.46.11 ÷ 100 =
  30. 30.269.8 × 1000 =
  31. 31.16.46 ÷ 100 =
  32. 32.22.38 ÷ 10 =
  33. 33.227.2 × 10 =
  34. 34.6.04 ÷ 1000 =
  35. 35.244.4 ÷ 1000 =
  36. 36.2.39 ÷ 1000 =
  37. 37.186.1 × 100 =
  38. 38.23.91 ÷ 10 =
  39. 39.181.4 × 1000 =
  40. 40.34.6 ÷ 10 =

Answer key

  1. 79300
  2. 22.7
  3. 4.758
  4. 359.1
  5. 49.79
  6. 4.37
  7. 139300
  8. 8900
  9. 4.616
  10. 0.0171
  11. 4.632
  12. 46.21
  13. 21140
  14. 3788
  15. 2001
  16. 2483
  17. 343.8
  18. 2.843
  19. 16170
  20. 4046
  21. 2480
  22. 263700
  23. 162600
  24. 0.02172
  25. 2.646
  26. 28520
  27. 3865
  28. 26310
  29. 0.4611
  30. 269800
  31. 0.1646
  32. 2.238
  33. 2272
  34. 0.00604
  35. 0.2444
  36. 0.00239
  37. 18610
  38. 2.391
  39. 181400
  40. 3.46

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