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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 305 · 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. 1.32.58 × 1000 =
  2. 2.38.77 ÷ 1000 =
  3. 3.472.7 ÷ 100 =
  4. 4.14.67 × 1000 =
  5. 5.7.53 × 1000 =
  6. 6.382.2 × 1000 =
  7. 7.11.44 × 100 =
  8. 8.330.6 ÷ 10 =
  9. 9.46.78 × 10 =
  10. 10.2.65 ÷ 100 =
  11. 11.4.03 ÷ 1000 =
  12. 12.1.31 × 10 =
  13. 13.260.9 × 10 =
  14. 14.105.3 ÷ 100 =
  15. 15.24.01 ÷ 10 =
  16. 16.5.51 ÷ 10 =
  17. 17.382.8 ÷ 1000 =
  18. 18.293.4 × 10 =
  19. 19.5.58 × 10 =
  20. 20.10.68 × 100 =
  21. 21.4.6 × 10 =
  22. 22.12.19 × 100 =
  23. 23.8.51 × 10 =
  24. 24.102.8 × 100 =
  25. 25.279.8 × 10 =
  26. 26.100.7 × 10 =
  27. 27.44.42 × 100 =
  28. 28.7.1 ÷ 100 =
  29. 29.3.69 × 10 =
  30. 30.185.6 ÷ 10 =
  31. 31.11.68 ÷ 10 =
  32. 32.19.91 × 10 =
  33. 33.98.2 ÷ 100 =
  34. 34.141.2 ÷ 100 =
  35. 35.4.8 ÷ 100 =
  36. 36.6.5 ÷ 100 =
  37. 37.414.7 ÷ 100 =
  38. 38.353.4 × 10 =
  39. 39.182.4 × 1000 =
  40. 40.11.37 ÷ 10 =

Answer key

  1. 32580
  2. 0.03877
  3. 4.727
  4. 14670
  5. 7530
  6. 382200
  7. 1144
  8. 33.06
  9. 467.8
  10. 0.0265
  11. 0.00403
  12. 13.1
  13. 2609
  14. 1.053
  15. 2.401
  16. 0.551
  17. 0.3828
  18. 2934
  19. 55.8
  20. 1068
  21. 46
  22. 1219
  23. 85.1
  24. 10280
  25. 2798
  26. 1007
  27. 4442
  28. 0.071
  29. 36.9
  30. 18.56
  31. 1.168
  32. 199.1
  33. 0.982
  34. 1.412
  35. 0.048
  36. 0.065
  37. 4.147
  38. 3534
  39. 182400
  40. 1.137

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