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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 117 · 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. 1.26.62 × 10 =
  2. 2.454.2 × 10 =
  3. 3.37.35 × 10 =
  4. 4.4.88 × 10 =
  5. 5.64.1 × 1000 =
  6. 6.10.4 ÷ 100 =
  7. 7.419.1 × 1000 =
  8. 8.363.3 ÷ 100 =
  9. 9.218.8 × 10 =
  10. 10.24.21 × 10 =
  11. 11.461.1 × 100 =
  12. 12.218.3 ÷ 100 =
  13. 13.25.44 ÷ 100 =
  14. 14.30.82 ÷ 10 =
  15. 15.176.2 ÷ 1000 =
  16. 16.3.5 × 1000 =
  17. 17.27.02 ÷ 1000 =
  18. 18.191.9 ÷ 10 =
  19. 19.26.34 ÷ 1000 =
  20. 20.215.9 × 10 =
  21. 21.6.58 × 10 =
  22. 22.109.4 × 100 =
  23. 23.0.36 ÷ 1000 =
  24. 24.480.7 × 10 =
  25. 25.280.1 × 100 =
  26. 26.301.5 × 10 =
  27. 27.353.7 ÷ 100 =
  28. 28.48.25 ÷ 10 =
  29. 29.203.1 ÷ 1000 =
  30. 30.20.11 × 100 =
  31. 31.314.3 × 10 =
  32. 32.58.1 ÷ 100 =
  33. 33.0.74 ÷ 10 =
  34. 34.126.1 × 1000 =
  35. 35.41.21 ÷ 1000 =
  36. 36.260.9 × 1000 =
  37. 37.311.7 × 1000 =
  38. 38.283.1 ÷ 10 =
  39. 39.18.84 ÷ 1000 =
  40. 40.58.1 × 100 =

Answer key

  1. 266.2
  2. 4542
  3. 373.5
  4. 48.8
  5. 64100
  6. 0.104
  7. 419100
  8. 3.633
  9. 2188
  10. 242.1
  11. 46110
  12. 2.183
  13. 0.2544
  14. 3.082
  15. 0.1762
  16. 3500
  17. 0.02702
  18. 19.19
  19. 0.02634
  20. 2159
  21. 65.8
  22. 10940
  23. 0.00036
  24. 4807
  25. 28010
  26. 3015
  27. 3.537
  28. 4.825
  29. 0.2031
  30. 2011
  31. 3143
  32. 0.581
  33. 0.074
  34. 126100
  35. 0.04121
  36. 260900
  37. 311700
  38. 28.31
  39. 0.01884
  40. 5810

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