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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 930 · 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. 1.8.52 × 10 =
  2. 2.440.4 × 100 =
  3. 3.371.9 × 1000 =
  4. 4.279.5 × 1000 =
  5. 5.458.8 ÷ 10 =
  6. 6.42.47 ÷ 100 =
  7. 7.33.43 × 10 =
  8. 8.20.55 × 10 =
  9. 9.8.28 × 10 =
  10. 10.14.32 ÷ 100 =
  11. 11.25.11 ÷ 1000 =
  12. 12.221.7 ÷ 100 =
  13. 13.182.2 × 10 =
  14. 14.24.64 × 10 =
  15. 15.239.1 × 100 =
  16. 16.11.96 ÷ 100 =
  17. 17.42.51 ÷ 100 =
  18. 18.184.8 ÷ 1000 =
  19. 19.212.1 ÷ 100 =
  20. 20.139.1 ÷ 1000 =
  21. 21.420.7 × 10 =
  22. 22.165.3 ÷ 100 =
  23. 23.152.6 ÷ 10 =
  24. 24.1.85 × 10 =
  25. 25.339.2 × 100 =
  26. 26.7.48 ÷ 100 =
  27. 27.0.48 × 100 =
  28. 28.298.9 ÷ 100 =
  29. 29.397.5 × 10 =
  30. 30.263.7 × 100 =
  31. 31.26.46 × 1000 =
  32. 32.230.3 ÷ 1000 =
  33. 33.0.11 ÷ 1000 =
  34. 34.429.9 ÷ 1000 =
  35. 35.0.92 × 10 =
  36. 36.293.9 ÷ 10 =
  37. 37.458.4 ÷ 100 =
  38. 38.17.6 ÷ 1000 =
  39. 39.409.5 × 100 =
  40. 40.46.24 ÷ 10 =

Answer key

  1. 85.2
  2. 44040
  3. 371900
  4. 279500
  5. 45.88
  6. 0.4247
  7. 334.3
  8. 205.5
  9. 82.8
  10. 0.1432
  11. 0.02511
  12. 2.217
  13. 1822
  14. 246.4
  15. 23910
  16. 0.1196
  17. 0.4251
  18. 0.1848
  19. 2.121
  20. 0.1391
  21. 4207
  22. 1.653
  23. 15.26
  24. 18.5
  25. 33920
  26. 0.0748
  27. 48
  28. 2.989
  29. 3975
  30. 26370
  31. 26460
  32. 0.2303
  33. 0.00011
  34. 0.4299
  35. 9.2
  36. 29.39
  37. 4.584
  38. 0.0176
  39. 40950
  40. 4.624

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