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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 158 · 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. 1.472.1 ÷ 10 =
  2. 2.121.5 × 100 =
  3. 3.445.8 × 100 =
  4. 4.6.41 ÷ 1000 =
  5. 5.191.2 ÷ 1000 =
  6. 6.378.5 ÷ 100 =
  7. 7.68.3 × 10 =
  8. 8.139.5 × 100 =
  9. 9.29.5 × 1000 =
  10. 10.93.8 ÷ 10 =
  11. 11.11.57 × 100 =
  12. 12.36.65 ÷ 10 =
  13. 13.213.5 ÷ 10 =
  14. 14.94.4 ÷ 10 =
  15. 15.24.56 ÷ 10 =
  16. 16.8.6 × 100 =
  17. 17.178.1 ÷ 100 =
  18. 18.23.26 × 1000 =
  19. 19.14.2 ÷ 1000 =
  20. 20.256.9 × 10 =
  21. 21.138.3 × 100 =
  22. 22.396.8 × 100 =
  23. 23.332.4 ÷ 10 =
  24. 24.466.5 ÷ 100 =
  25. 25.24.99 ÷ 1000 =
  26. 26.3.52 ÷ 10 =
  27. 27.19.91 ÷ 100 =
  28. 28.46.11 × 10 =
  29. 29.243.2 × 100 =
  30. 30.22.01 ÷ 10 =
  31. 31.40.54 ÷ 1000 =
  32. 32.31.03 ÷ 100 =
  33. 33.15.7 × 100 =
  34. 34.74.6 ÷ 1000 =
  35. 35.256.5 × 100 =
  36. 36.41.29 ÷ 100 =
  37. 37.18.98 × 1000 =
  38. 38.289.8 × 10 =
  39. 39.212.5 ÷ 10 =
  40. 40.253.2 × 1000 =

Answer key

  1. 47.21
  2. 12150
  3. 44580
  4. 0.00641
  5. 0.1912
  6. 3.785
  7. 683
  8. 13950
  9. 29500
  10. 9.38
  11. 1157
  12. 3.665
  13. 21.35
  14. 9.44
  15. 2.456
  16. 860
  17. 1.781
  18. 23260
  19. 0.0142
  20. 2569
  21. 13830
  22. 39680
  23. 33.24
  24. 4.665
  25. 0.02499
  26. 0.352
  27. 0.1991
  28. 461.1
  29. 24320
  30. 2.201
  31. 0.04054
  32. 0.3103
  33. 1570
  34. 0.0746
  35. 25650
  36. 0.4129
  37. 18980
  38. 2898
  39. 21.25
  40. 253200

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