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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 153 · 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. 1.261.3 ÷ 1000 =
  2. 2.13.12 × 100 =
  3. 3.6.06 ÷ 10 =
  4. 4.8.75 × 10 =
  5. 5.144.8 ÷ 10 =
  6. 6.105.1 × 1000 =
  7. 7.39.47 ÷ 1000 =
  8. 8.7.96 ÷ 10 =
  9. 9.154.1 × 10 =
  10. 10.3.99 ÷ 10 =
  11. 11.11.52 × 1000 =
  12. 12.3.53 ÷ 1000 =
  13. 13.77.5 ÷ 100 =
  14. 14.64.8 × 10 =
  15. 15.451.8 ÷ 100 =
  16. 16.27.48 ÷ 1000 =
  17. 17.55.9 ÷ 100 =
  18. 18.412.1 ÷ 100 =
  19. 19.35.3 × 1000 =
  20. 20.433.6 ÷ 100 =
  21. 21.419.9 × 100 =
  22. 22.140.7 × 1000 =
  23. 23.1.6 × 1000 =
  24. 24.262.9 ÷ 10 =
  25. 25.295.4 ÷ 1000 =
  26. 26.27.81 × 1000 =
  27. 27.4.12 ÷ 10 =
  28. 28.5.61 ÷ 10 =
  29. 29.3.35 × 100 =
  30. 30.469.2 ÷ 100 =
  31. 31.46.63 ÷ 1000 =
  32. 32.45.61 ÷ 100 =
  33. 33.96.7 ÷ 10 =
  34. 34.5.28 × 10 =
  35. 35.22.79 × 1000 =
  36. 36.139.5 × 100 =
  37. 37.36.4 ÷ 1000 =
  38. 38.0.97 × 100 =
  39. 39.37.57 ÷ 10 =
  40. 40.16.57 × 10 =

Answer key

  1. 0.2613
  2. 1312
  3. 0.606
  4. 87.5
  5. 14.48
  6. 105100
  7. 0.03947
  8. 0.796
  9. 1541
  10. 0.399
  11. 11520
  12. 0.00353
  13. 0.775
  14. 648
  15. 4.518
  16. 0.02748
  17. 0.559
  18. 4.121
  19. 35300
  20. 4.336
  21. 41990
  22. 140700
  23. 1600
  24. 26.29
  25. 0.2954
  26. 27810
  27. 0.412
  28. 0.561
  29. 335
  30. 4.692
  31. 0.04663
  32. 0.4561
  33. 9.67
  34. 52.8
  35. 22790
  36. 13950
  37. 0.0364
  38. 97
  39. 3.757
  40. 165.7

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