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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 12 · 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. 1.44.3 × 100 =
  2. 2.314.9 ÷ 1000 =
  3. 3.129.2 ÷ 100 =
  4. 4.42.99 × 1000 =
  5. 5.5.55 × 1000 =
  6. 6.326.1 × 1000 =
  7. 7.39.49 ÷ 100 =
  8. 8.98.8 ÷ 100 =
  9. 9.276.3 ÷ 10 =
  10. 10.30.8 × 1000 =
  11. 11.170.4 ÷ 10 =
  12. 12.46.08 ÷ 10 =
  13. 13.31.44 × 10 =
  14. 14.9.17 × 1000 =
  15. 15.21.43 × 1000 =
  16. 16.47.88 × 10 =
  17. 17.450.8 × 10 =
  18. 18.180.4 × 100 =
  19. 19.383.7 ÷ 10 =
  20. 20.34.45 × 100 =
  21. 21.8.89 × 1000 =
  22. 22.4.31 × 10 =
  23. 23.28.04 × 1000 =
  24. 24.335.1 × 100 =
  25. 25.43.53 ÷ 1000 =
  26. 26.45.18 × 1000 =
  27. 27.76.1 × 100 =
  28. 28.47.78 ÷ 10 =
  29. 29.233.7 ÷ 1000 =
  30. 30.16.72 ÷ 1000 =
  31. 31.498.1 ÷ 10 =
  32. 32.380.4 × 100 =
  33. 33.113.4 × 100 =
  34. 34.47.14 × 100 =
  35. 35.477.1 × 100 =
  36. 36.178.4 × 1000 =
  37. 37.450.5 × 1000 =
  38. 38.1.41 × 10 =
  39. 39.378.5 × 10 =
  40. 40.227.2 ÷ 10 =

Answer key

  1. 4430
  2. 0.3149
  3. 1.292
  4. 42990
  5. 5550
  6. 326100
  7. 0.3949
  8. 0.988
  9. 27.63
  10. 30800
  11. 17.04
  12. 4.608
  13. 314.4
  14. 9170
  15. 21430
  16. 478.8
  17. 4508
  18. 18040
  19. 38.37
  20. 3445
  21. 8890
  22. 43.1
  23. 28040
  24. 33510
  25. 0.04353
  26. 45180
  27. 7610
  28. 4.778
  29. 0.2337
  30. 0.01672
  31. 49.81
  32. 38040
  33. 11340
  34. 4714
  35. 47710
  36. 178400
  37. 450500
  38. 14.1
  39. 3785
  40. 22.72

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