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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 40 · 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. 1.26.92 ÷ 100 =
  2. 2.328.6 × 10 =
  3. 3.29.6 × 100 =
  4. 4.42.85 × 1000 =
  5. 5.42.28 × 1000 =
  6. 6.41.98 ÷ 10 =
  7. 7.10.3 × 100 =
  8. 8.212.6 ÷ 1000 =
  9. 9.34.94 × 1000 =
  10. 10.1.7 × 100 =
  11. 11.319.9 ÷ 100 =
  12. 12.16.38 ÷ 10 =
  13. 13.261.8 ÷ 1000 =
  14. 14.172.5 × 100 =
  15. 15.5.47 × 100 =
  16. 16.21.7 × 1000 =
  17. 17.24.37 × 10 =
  18. 18.232.6 × 1000 =
  19. 19.79.1 × 1000 =
  20. 20.323.1 ÷ 100 =
  21. 21.139.7 × 10 =
  22. 22.473.1 × 100 =
  23. 23.35.82 ÷ 100 =
  24. 24.212.5 × 10 =
  25. 25.483.4 × 1000 =
  26. 26.49.93 × 10 =
  27. 27.375.7 ÷ 100 =
  28. 28.5.42 ÷ 100 =
  29. 29.160.1 × 10 =
  30. 30.445.9 × 1000 =
  31. 31.26.32 ÷ 10 =
  32. 32.0.42 × 100 =
  33. 33.32.48 × 100 =
  34. 34.38.51 × 1000 =
  35. 35.52.1 × 1000 =
  36. 36.282.3 ÷ 1000 =
  37. 37.452.7 ÷ 1000 =
  38. 38.433.5 × 100 =
  39. 39.75.6 × 100 =
  40. 40.46.73 ÷ 1000 =

Answer key

  1. 0.2692
  2. 3286
  3. 2960
  4. 42850
  5. 42280
  6. 4.198
  7. 1030
  8. 0.2126
  9. 34940
  10. 170
  11. 3.199
  12. 1.638
  13. 0.2618
  14. 17250
  15. 547
  16. 21700
  17. 243.7
  18. 232600
  19. 79100
  20. 3.231
  21. 1397
  22. 47310
  23. 0.3582
  24. 2125
  25. 483400
  26. 499.3
  27. 3.757
  28. 0.0542
  29. 1601
  30. 445900
  31. 2.632
  32. 42
  33. 3248
  34. 38510
  35. 52100
  36. 0.2823
  37. 0.4527
  38. 43350
  39. 7560
  40. 0.04673

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