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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 992 · 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. 1.245.6 × 10 =
  2. 2.127.7 ÷ 100 =
  3. 3.53.3 ÷ 100 =
  4. 4.51.9 ÷ 1000 =
  5. 5.198.3 ÷ 100 =
  6. 6.141.8 ÷ 100 =
  7. 7.251.2 ÷ 100 =
  8. 8.16.81 ÷ 10 =
  9. 9.471.1 ÷ 10 =
  10. 10.6.05 ÷ 100 =
  11. 11.492.1 × 10 =
  12. 12.312.9 × 100 =
  13. 13.9.31 × 100 =
  14. 14.44.36 × 1000 =
  15. 15.43.5 × 10 =
  16. 16.1.64 × 10 =
  17. 17.4.1 × 1000 =
  18. 18.285.5 ÷ 10 =
  19. 19.3.67 ÷ 100 =
  20. 20.166.2 ÷ 10 =
  21. 21.10.34 × 1000 =
  22. 22.45.67 × 1000 =
  23. 23.12.78 ÷ 1000 =
  24. 24.90.6 × 10 =
  25. 25.383.4 ÷ 10 =
  26. 26.133.3 × 10 =
  27. 27.323.1 ÷ 100 =
  28. 28.26.52 ÷ 100 =
  29. 29.7.99 × 10 =
  30. 30.9.69 ÷ 10 =
  31. 31.463.3 × 10 =
  32. 32.104.5 × 10 =
  33. 33.11.36 ÷ 100 =
  34. 34.299.8 ÷ 10 =
  35. 35.12.19 ÷ 10 =
  36. 36.29.63 ÷ 1000 =
  37. 37.24.1 ÷ 100 =
  38. 38.114.1 × 10 =
  39. 39.28.44 × 100 =
  40. 40.303.9 ÷ 10 =

Answer key

  1. 2456
  2. 1.277
  3. 0.533
  4. 0.0519
  5. 1.983
  6. 1.418
  7. 2.512
  8. 1.681
  9. 47.11
  10. 0.0605
  11. 4921
  12. 31290
  13. 931
  14. 44360
  15. 435
  16. 16.4
  17. 4100
  18. 28.55
  19. 0.0367
  20. 16.62
  21. 10340
  22. 45670
  23. 0.01278
  24. 906
  25. 38.34
  26. 1333
  27. 3.231
  28. 0.2652
  29. 79.9
  30. 0.969
  31. 4633
  32. 1045
  33. 0.1136
  34. 29.98
  35. 1.219
  36. 0.02963
  37. 0.241
  38. 1141
  39. 2844
  40. 30.39

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