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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 535 · 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. 1.321.9 ÷ 1000 =
  2. 2.28.76 ÷ 10 =
  3. 3.15.82 × 100 =
  4. 4.42.49 × 10 =
  5. 5.6.95 ÷ 100 =
  6. 6.37.32 × 100 =
  7. 7.45.61 × 1000 =
  8. 8.172.7 ÷ 10 =
  9. 9.177.9 × 100 =
  10. 10.93.6 ÷ 10 =
  11. 11.114.3 × 100 =
  12. 12.123.6 × 1000 =
  13. 13.279.4 ÷ 10 =
  14. 14.24.35 ÷ 100 =
  15. 15.37.42 × 10 =
  16. 16.1.16 × 1000 =
  17. 17.121.6 ÷ 100 =
  18. 18.21.88 ÷ 10 =
  19. 19.159.6 ÷ 100 =
  20. 20.128.9 × 10 =
  21. 21.42.78 ÷ 10 =
  22. 22.131.7 × 1000 =
  23. 23.192.3 ÷ 100 =
  24. 24.12.11 ÷ 1000 =
  25. 25.20.41 × 1000 =
  26. 26.49.81 ÷ 100 =
  27. 27.40.99 ÷ 10 =
  28. 28.31.9 × 1000 =
  29. 29.54.4 × 10 =
  30. 30.235.5 ÷ 10 =
  31. 31.391.4 × 10 =
  32. 32.241.1 ÷ 1000 =
  33. 33.13.72 × 1000 =
  34. 34.22.15 × 1000 =
  35. 35.8.73 × 10 =
  36. 36.231.1 × 1000 =
  37. 37.11.22 × 1000 =
  38. 38.178.3 × 100 =
  39. 39.230.6 ÷ 10 =
  40. 40.39.01 × 10 =

Answer key

  1. 0.3219
  2. 2.876
  3. 1582
  4. 424.9
  5. 0.0695
  6. 3732
  7. 45610
  8. 17.27
  9. 17790
  10. 9.36
  11. 11430
  12. 123600
  13. 27.94
  14. 0.2435
  15. 374.2
  16. 1160
  17. 1.216
  18. 2.188
  19. 1.596
  20. 1289
  21. 4.278
  22. 131700
  23. 1.923
  24. 0.01211
  25. 20410
  26. 0.4981
  27. 4.099
  28. 31900
  29. 544
  30. 23.55
  31. 3914
  32. 0.2411
  33. 13720
  34. 22150
  35. 87.3
  36. 231100
  37. 11220
  38. 17830
  39. 23.06
  40. 390.1

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