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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 628 · 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. 1.49.14 × 1000 =
  2. 2.18.1 ÷ 1000 =
  3. 3.86.7 ÷ 10 =
  4. 4.209.3 × 10 =
  5. 5.8.1 ÷ 10 =
  6. 6.469.7 ÷ 10 =
  7. 7.26.69 × 10 =
  8. 8.82.5 × 1000 =
  9. 9.372.3 ÷ 100 =
  10. 10.145.8 ÷ 1000 =
  11. 11.297.8 × 10 =
  12. 12.34.18 × 1000 =
  13. 13.37.8 × 100 =
  14. 14.3.87 × 10 =
  15. 15.309.9 × 10 =
  16. 16.365.3 × 1000 =
  17. 17.395.2 ÷ 100 =
  18. 18.411.5 × 1000 =
  19. 19.330.4 × 10 =
  20. 20.31.09 × 10 =
  21. 21.153.1 × 1000 =
  22. 22.26.4 × 1000 =
  23. 23.153.4 × 1000 =
  24. 24.15.21 ÷ 100 =
  25. 25.36.21 × 10 =
  26. 26.415.4 × 10 =
  27. 27.8.62 × 100 =
  28. 28.317.1 × 10 =
  29. 29.14.49 × 10 =
  30. 30.287.1 × 10 =
  31. 31.42.21 ÷ 100 =
  32. 32.333.1 ÷ 1000 =
  33. 33.418.8 × 100 =
  34. 34.488.2 × 100 =
  35. 35.11.61 ÷ 10 =
  36. 36.201.3 × 1000 =
  37. 37.27.91 × 10 =
  38. 38.10.46 × 1000 =
  39. 39.116.1 × 10 =
  40. 40.38.91 ÷ 10 =

Answer key

  1. 49140
  2. 0.0181
  3. 8.67
  4. 2093
  5. 0.81
  6. 46.97
  7. 266.9
  8. 82500
  9. 3.723
  10. 0.1458
  11. 2978
  12. 34180
  13. 3780
  14. 38.7
  15. 3099
  16. 365300
  17. 3.952
  18. 411500
  19. 3304
  20. 310.9
  21. 153100
  22. 26400
  23. 153400
  24. 0.1521
  25. 362.1
  26. 4154
  27. 862
  28. 3171
  29. 144.9
  30. 2871
  31. 0.4221
  32. 0.3331
  33. 41880
  34. 48820
  35. 1.161
  36. 201300
  37. 279.1
  38. 10460
  39. 1161
  40. 3.891

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