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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 231 · 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. 1.181.6 × 10 =
  2. 2.19.3 × 10 =
  3. 3.113.5 × 10 =
  4. 4.16.51 × 10 =
  5. 5.270.2 ÷ 100 =
  6. 6.151.2 × 10 =
  7. 7.273.2 ÷ 1000 =
  8. 8.5.62 ÷ 100 =
  9. 9.14.71 × 1000 =
  10. 10.454.1 ÷ 1000 =
  11. 11.277.4 × 10 =
  12. 12.17.51 × 10 =
  13. 13.35.1 × 100 =
  14. 14.371.8 × 100 =
  15. 15.12.49 ÷ 100 =
  16. 16.488.3 × 1000 =
  17. 17.26.5 ÷ 10 =
  18. 18.410.1 × 10 =
  19. 19.142.7 × 1000 =
  20. 20.448.4 ÷ 1000 =
  21. 21.16.6 × 1000 =
  22. 22.312.5 ÷ 10 =
  23. 23.231.9 ÷ 10 =
  24. 24.27.04 ÷ 100 =
  25. 25.21.25 ÷ 10 =
  26. 26.10.01 ÷ 100 =
  27. 27.489.6 ÷ 10 =
  28. 28.41.9 ÷ 1000 =
  29. 29.39.28 × 1000 =
  30. 30.10.38 ÷ 1000 =
  31. 31.36.76 ÷ 10 =
  32. 32.282.1 × 100 =
  33. 33.30.51 × 1000 =
  34. 34.202.8 ÷ 1000 =
  35. 35.18.74 ÷ 1000 =
  36. 36.299.7 × 100 =
  37. 37.125.5 × 1000 =
  38. 38.19.52 × 100 =
  39. 39.158.2 × 100 =
  40. 40.96.9 × 10 =

Answer key

  1. 1816
  2. 193
  3. 1135
  4. 165.1
  5. 2.702
  6. 1512
  7. 0.2732
  8. 0.0562
  9. 14710
  10. 0.4541
  11. 2774
  12. 175.1
  13. 3510
  14. 37180
  15. 0.1249
  16. 488300
  17. 2.65
  18. 4101
  19. 142700
  20. 0.4484
  21. 16600
  22. 31.25
  23. 23.19
  24. 0.2704
  25. 2.125
  26. 0.1001
  27. 48.96
  28. 0.0419
  29. 39280
  30. 0.01038
  31. 3.676
  32. 28210
  33. 30510
  34. 0.2028
  35. 0.01874
  36. 29970
  37. 125500
  38. 1952
  39. 15820
  40. 969

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