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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 988 · 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. 1.142.8 × 10 =
  2. 2.254.7 ÷ 10 =
  3. 3.225.8 ÷ 100 =
  4. 4.11.81 ÷ 10 =
  5. 5.160.3 × 100 =
  6. 6.462.9 × 1000 =
  7. 7.0.41 ÷ 10 =
  8. 8.188.2 ÷ 1000 =
  9. 9.259.8 × 1000 =
  10. 10.264.3 × 1000 =
  11. 11.310.1 × 10 =
  12. 12.403.5 × 10 =
  13. 13.27.61 × 100 =
  14. 14.475.7 ÷ 10 =
  15. 15.309.3 ÷ 100 =
  16. 16.327.2 × 10 =
  17. 17.110.8 × 1000 =
  18. 18.25.9 ÷ 1000 =
  19. 19.332.2 × 100 =
  20. 20.24.11 × 100 =
  21. 21.55.9 × 10 =
  22. 22.1.21 × 1000 =
  23. 23.313.1 ÷ 100 =
  24. 24.375.6 ÷ 1000 =
  25. 25.322.6 ÷ 1000 =
  26. 26.24.05 × 10 =
  27. 27.458.6 ÷ 100 =
  28. 28.152.2 ÷ 10 =
  29. 29.344.1 × 10 =
  30. 30.493.9 × 1000 =
  31. 31.100.1 ÷ 100 =
  32. 32.12.99 ÷ 100 =
  33. 33.34.19 ÷ 10 =
  34. 34.183.8 × 10 =
  35. 35.14.08 × 10 =
  36. 36.69.3 ÷ 10 =
  37. 37.251.5 × 10 =
  38. 38.17.95 ÷ 10 =
  39. 39.28.62 ÷ 100 =
  40. 40.33.82 ÷ 10 =

Answer key

  1. 1428
  2. 25.47
  3. 2.258
  4. 1.181
  5. 16030
  6. 462900
  7. 0.041
  8. 0.1882
  9. 259800
  10. 264300
  11. 3101
  12. 4035
  13. 2761
  14. 47.57
  15. 3.093
  16. 3272
  17. 110800
  18. 0.0259
  19. 33220
  20. 2411
  21. 559
  22. 1210
  23. 3.131
  24. 0.3756
  25. 0.3226
  26. 240.5
  27. 4.586
  28. 15.22
  29. 3441
  30. 493900
  31. 1.001
  32. 0.1299
  33. 3.419
  34. 1838
  35. 140.8
  36. 6.93
  37. 2515
  38. 1.795
  39. 0.2862
  40. 3.382

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