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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 950 · 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. 1.17.04 ÷ 10 =
  2. 2.209.5 ÷ 10 =
  3. 3.4.65 × 10 =
  4. 4.460.1 ÷ 100 =
  5. 5.158.3 × 10 =
  6. 6.259.5 ÷ 1000 =
  7. 7.414.6 × 1000 =
  8. 8.321.1 ÷ 100 =
  9. 9.27.56 × 100 =
  10. 10.46.36 × 1000 =
  11. 11.163.7 ÷ 100 =
  12. 12.139.1 ÷ 100 =
  13. 13.24.13 × 10 =
  14. 14.29.41 × 10 =
  15. 15.485.1 ÷ 10 =
  16. 16.42.38 ÷ 100 =
  17. 17.53.8 × 10 =
  18. 18.85.2 × 1000 =
  19. 19.150.5 × 10 =
  20. 20.363.1 × 1000 =
  21. 21.302.5 × 1000 =
  22. 22.24.88 × 1000 =
  23. 23.39.47 × 10 =
  24. 24.21.52 × 10 =
  25. 25.200.1 × 10 =
  26. 26.124.7 × 100 =
  27. 27.39.71 ÷ 100 =
  28. 28.26.54 × 10 =
  29. 29.42.49 × 10 =
  30. 30.37.4 × 1000 =
  31. 31.391.2 ÷ 100 =
  32. 32.63.4 × 10 =
  33. 33.414.1 × 10 =
  34. 34.309.9 ÷ 100 =
  35. 35.240.2 × 10 =
  36. 36.336.9 × 100 =
  37. 37.357.7 ÷ 100 =
  38. 38.1.12 ÷ 1000 =
  39. 39.9.18 ÷ 10 =
  40. 40.27.04 ÷ 1000 =

Answer key

  1. 1.704
  2. 20.95
  3. 46.5
  4. 4.601
  5. 1583
  6. 0.2595
  7. 414600
  8. 3.211
  9. 2756
  10. 46360
  11. 1.637
  12. 1.391
  13. 241.3
  14. 294.1
  15. 48.51
  16. 0.4238
  17. 538
  18. 85200
  19. 1505
  20. 363100
  21. 302500
  22. 24880
  23. 394.7
  24. 215.2
  25. 2001
  26. 12470
  27. 0.3971
  28. 265.4
  29. 424.9
  30. 37400
  31. 3.912
  32. 634
  33. 4141
  34. 3.099
  35. 2402
  36. 33690
  37. 3.577
  38. 0.00112
  39. 0.918
  40. 0.02704

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