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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 141 · 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. 1.485.9 ÷ 10 =
  2. 2.260.1 ÷ 1000 =
  3. 3.39.58 ÷ 1000 =
  4. 4.164.9 × 1000 =
  5. 5.35.85 × 10 =
  6. 6.322.8 × 10 =
  7. 7.32.96 ÷ 100 =
  8. 8.484.6 ÷ 1000 =
  9. 9.14.59 × 1000 =
  10. 10.322.5 × 100 =
  11. 11.11.44 × 10 =
  12. 12.2.63 ÷ 1000 =
  13. 13.236.7 × 1000 =
  14. 14.285.6 ÷ 100 =
  15. 15.247.3 × 100 =
  16. 16.20.31 ÷ 1000 =
  17. 17.26.11 × 10 =
  18. 18.12.08 × 10 =
  19. 19.268.3 ÷ 10 =
  20. 20.10.71 ÷ 100 =
  21. 21.236.8 × 10 =
  22. 22.12.36 ÷ 10 =
  23. 23.7.36 ÷ 10 =
  24. 24.277.1 × 10 =
  25. 25.44.55 × 10 =
  26. 26.302.7 × 1000 =
  27. 27.17.1 ÷ 100 =
  28. 28.249.6 × 1000 =
  29. 29.134.6 × 100 =
  30. 30.300.1 ÷ 1000 =
  31. 31.15.83 × 100 =
  32. 32.9.57 ÷ 100 =
  33. 33.13.14 ÷ 1000 =
  34. 34.203.8 × 100 =
  35. 35.415.6 ÷ 10 =
  36. 36.33.4 × 1000 =
  37. 37.1.23 × 1000 =
  38. 38.138.1 × 1000 =
  39. 39.8.45 × 10 =
  40. 40.245.6 × 1000 =

Answer key

  1. 48.59
  2. 0.2601
  3. 0.03958
  4. 164900
  5. 358.5
  6. 3228
  7. 0.3296
  8. 0.4846
  9. 14590
  10. 32250
  11. 114.4
  12. 0.00263
  13. 236700
  14. 2.856
  15. 24730
  16. 0.02031
  17. 261.1
  18. 120.8
  19. 26.83
  20. 0.1071
  21. 2368
  22. 1.236
  23. 0.736
  24. 2771
  25. 445.5
  26. 302700
  27. 0.171
  28. 249600
  29. 13460
  30. 0.3001
  31. 1583
  32. 0.0957
  33. 0.01314
  34. 20380
  35. 41.56
  36. 33400
  37. 1230
  38. 138100
  39. 84.5
  40. 245600

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