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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 270 · 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. 1.344.7 × 1000 =
  2. 2.169.2 × 10 =
  3. 3.36.7 × 100 =
  4. 4.45.21 ÷ 1000 =
  5. 5.389.7 × 1000 =
  6. 6.25.55 × 1000 =
  7. 7.18.57 ÷ 10 =
  8. 8.30.37 × 100 =
  9. 9.283.2 × 10 =
  10. 10.304.7 × 100 =
  11. 11.461.5 × 1000 =
  12. 12.487.7 ÷ 1000 =
  13. 13.34.74 × 100 =
  14. 14.26.53 ÷ 100 =
  15. 15.23.91 ÷ 10 =
  16. 16.26.7 × 100 =
  17. 17.167.3 × 10 =
  18. 18.452.1 × 100 =
  19. 19.438.8 ÷ 10 =
  20. 20.33.84 ÷ 1000 =
  21. 21.244.3 ÷ 10 =
  22. 22.11.77 ÷ 1000 =
  23. 23.22.41 ÷ 10 =
  24. 24.314.1 ÷ 100 =
  25. 25.155.2 ÷ 100 =
  26. 26.376.4 ÷ 10 =
  27. 27.20.11 × 1000 =
  28. 28.6.94 ÷ 1000 =
  29. 29.15.48 ÷ 100 =
  30. 30.22.72 × 1000 =
  31. 31.40.81 × 1000 =
  32. 32.11.78 × 100 =
  33. 33.30.35 ÷ 100 =
  34. 34.117.1 × 1000 =
  35. 35.9.54 ÷ 1000 =
  36. 36.312.3 × 1000 =
  37. 37.48.51 ÷ 10 =
  38. 38.480.9 × 1000 =
  39. 39.9.58 ÷ 1000 =
  40. 40.452.6 × 100 =

Answer key

  1. 344700
  2. 1692
  3. 3670
  4. 0.04521
  5. 389700
  6. 25550
  7. 1.857
  8. 3037
  9. 2832
  10. 30470
  11. 461500
  12. 0.4877
  13. 3474
  14. 0.2653
  15. 2.391
  16. 2670
  17. 1673
  18. 45210
  19. 43.88
  20. 0.03384
  21. 24.43
  22. 0.01177
  23. 2.241
  24. 3.141
  25. 1.552
  26. 37.64
  27. 20110
  28. 0.00694
  29. 0.1548
  30. 22720
  31. 40810
  32. 1178
  33. 0.3035
  34. 117100
  35. 0.00954
  36. 312300
  37. 4.851
  38. 480900
  39. 0.00958
  40. 45260

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