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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 262 · 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. 1.131.1 × 100 =
  2. 2.59.7 × 10 =
  3. 3.6.58 ÷ 1000 =
  4. 4.33.67 × 100 =
  5. 5.298.9 × 1000 =
  6. 6.402.3 × 1000 =
  7. 7.69.1 ÷ 1000 =
  8. 8.451.6 ÷ 100 =
  9. 9.362.7 × 100 =
  10. 10.8.41 × 100 =
  11. 11.23.72 × 1000 =
  12. 12.19.36 ÷ 1000 =
  13. 13.59.1 × 10 =
  14. 14.355.6 × 100 =
  15. 15.230.3 ÷ 1000 =
  16. 16.79.9 ÷ 1000 =
  17. 17.42.85 ÷ 10 =
  18. 18.22.1 ÷ 10 =
  19. 19.216.1 × 1000 =
  20. 20.485.8 × 10 =
  21. 21.129.3 ÷ 10 =
  22. 22.201.6 ÷ 1000 =
  23. 23.29.29 × 1000 =
  24. 24.6.51 ÷ 100 =
  25. 25.35.41 × 1000 =
  26. 26.472.3 × 100 =
  27. 27.17.7 × 10 =
  28. 28.95.4 × 1000 =
  29. 29.158.1 ÷ 10 =
  30. 30.1.2 × 1000 =
  31. 31.21.52 × 1000 =
  32. 32.249.1 ÷ 1000 =
  33. 33.190.3 × 1000 =
  34. 34.495.5 × 100 =
  35. 35.462.6 × 1000 =
  36. 36.27.88 ÷ 100 =
  37. 37.23.85 × 1000 =
  38. 38.30.4 ÷ 10 =
  39. 39.186.1 × 10 =
  40. 40.31.01 × 100 =

Answer key

  1. 13110
  2. 597
  3. 0.00658
  4. 3367
  5. 298900
  6. 402300
  7. 0.0691
  8. 4.516
  9. 36270
  10. 841
  11. 23720
  12. 0.01936
  13. 591
  14. 35560
  15. 0.2303
  16. 0.0799
  17. 4.285
  18. 2.21
  19. 216100
  20. 4858
  21. 12.93
  22. 0.2016
  23. 29290
  24. 0.0651
  25. 35410
  26. 47230
  27. 177
  28. 95400
  29. 15.81
  30. 1200
  31. 21520
  32. 0.2491
  33. 190300
  34. 49550
  35. 462600
  36. 0.2788
  37. 23850
  38. 3.04
  39. 1861
  40. 3101

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