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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 530 · 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. 1.32.03 ÷ 100 =
  2. 2.40.14 × 1000 =
  3. 3.38.81 × 100 =
  4. 4.33.45 ÷ 10 =
  5. 5.334.1 ÷ 1000 =
  6. 6.3.06 ÷ 10 =
  7. 7.203.2 × 100 =
  8. 8.23.51 × 10 =
  9. 9.393.6 × 10 =
  10. 10.5.21 ÷ 10 =
  11. 11.115.6 ÷ 10 =
  12. 12.3.26 ÷ 10 =
  13. 13.11.96 × 100 =
  14. 14.16.74 × 1000 =
  15. 15.18.79 ÷ 1000 =
  16. 16.169.3 ÷ 1000 =
  17. 17.393.1 ÷ 1000 =
  18. 18.493.7 × 100 =
  19. 19.446.7 ÷ 100 =
  20. 20.43.12 ÷ 10 =
  21. 21.31.8 ÷ 10 =
  22. 22.57.8 × 10 =
  23. 23.30.92 ÷ 10 =
  24. 24.24.42 × 10 =
  25. 25.30.99 ÷ 100 =
  26. 26.48.05 × 1000 =
  27. 27.25.29 × 1000 =
  28. 28.3.6 ÷ 100 =
  29. 29.129.3 × 10 =
  30. 30.34.84 ÷ 10 =
  31. 31.15.34 × 10 =
  32. 32.306.6 ÷ 10 =
  33. 33.27.66 ÷ 10 =
  34. 34.335.4 ÷ 1000 =
  35. 35.64.8 × 1000 =
  36. 36.22.1 × 1000 =
  37. 37.203.5 ÷ 10 =
  38. 38.32.6 ÷ 1000 =
  39. 39.133.5 × 10 =
  40. 40.223.7 × 1000 =

Answer key

  1. 0.3203
  2. 40140
  3. 3881
  4. 3.345
  5. 0.3341
  6. 0.306
  7. 20320
  8. 235.1
  9. 3936
  10. 0.521
  11. 11.56
  12. 0.326
  13. 1196
  14. 16740
  15. 0.01879
  16. 0.1693
  17. 0.3931
  18. 49370
  19. 4.467
  20. 4.312
  21. 3.18
  22. 578
  23. 3.092
  24. 244.2
  25. 0.3099
  26. 48050
  27. 25290
  28. 0.036
  29. 1293
  30. 3.484
  31. 153.4
  32. 30.66
  33. 2.766
  34. 0.3354
  35. 64800
  36. 22100
  37. 20.35
  38. 0.0326
  39. 1335
  40. 223700

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