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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 197 · 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. 1.23.42 ÷ 10 =
  2. 2.351.9 × 1000 =
  3. 3.16.21 ÷ 10 =
  4. 4.32.71 × 100 =
  5. 5.213.9 × 100 =
  6. 6.27.95 ÷ 1000 =
  7. 7.137.4 ÷ 10 =
  8. 8.68.2 ÷ 100 =
  9. 9.0.35 × 10 =
  10. 10.406.9 ÷ 1000 =
  11. 11.30.69 × 100 =
  12. 12.433.5 ÷ 100 =
  13. 13.34.09 ÷ 100 =
  14. 14.31.63 ÷ 100 =
  15. 15.420.4 × 10 =
  16. 16.20.82 × 100 =
  17. 17.450.3 ÷ 100 =
  18. 18.39.98 ÷ 10 =
  19. 19.213.3 ÷ 10 =
  20. 20.117.6 ÷ 100 =
  21. 21.27.11 ÷ 1000 =
  22. 22.4.18 ÷ 1000 =
  23. 23.49.54 × 10 =
  24. 24.59.5 × 10 =
  25. 25.15.66 × 1000 =
  26. 26.17.3 ÷ 10 =
  27. 27.10.9 × 10 =
  28. 28.111.9 ÷ 10 =
  29. 29.2.7 × 10 =
  30. 30.84.3 × 10 =
  31. 31.128.8 ÷ 10 =
  32. 32.44.82 × 10 =
  33. 33.22.08 × 10 =
  34. 34.9.88 ÷ 10 =
  35. 35.419.1 × 10 =
  36. 36.266.9 ÷ 10 =
  37. 37.202.9 × 100 =
  38. 38.27.32 × 100 =
  39. 39.1.06 × 100 =
  40. 40.9.66 × 10 =

Answer key

  1. 2.342
  2. 351900
  3. 1.621
  4. 3271
  5. 21390
  6. 0.02795
  7. 13.74
  8. 0.682
  9. 3.5
  10. 0.4069
  11. 3069
  12. 4.335
  13. 0.3409
  14. 0.3163
  15. 4204
  16. 2082
  17. 4.503
  18. 3.998
  19. 21.33
  20. 1.176
  21. 0.02711
  22. 0.00418
  23. 495.4
  24. 595
  25. 15660
  26. 1.73
  27. 109
  28. 11.19
  29. 27
  30. 843
  31. 12.88
  32. 448.2
  33. 220.8
  34. 0.988
  35. 4191
  36. 26.69
  37. 20290
  38. 2732
  39. 106
  40. 96.6

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