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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 986 · 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. 1.288.4 ÷ 100 =
  2. 2.39.48 × 10 =
  3. 3.210.4 ÷ 10 =
  4. 4.19.4 ÷ 1000 =
  5. 5.44.13 ÷ 10 =
  6. 6.477.4 ÷ 100 =
  7. 7.4.88 ÷ 1000 =
  8. 8.123.2 ÷ 100 =
  9. 9.56.9 ÷ 100 =
  10. 10.20.17 × 1000 =
  11. 11.29.23 ÷ 10 =
  12. 12.95.5 × 1000 =
  13. 13.7.55 ÷ 10 =
  14. 14.45.04 ÷ 10 =
  15. 15.43.95 × 100 =
  16. 16.9.31 × 100 =
  17. 17.10.2 ÷ 10 =
  18. 18.418.1 × 100 =
  19. 19.6.7 × 10 =
  20. 20.1.25 ÷ 1000 =
  21. 21.281.5 ÷ 100 =
  22. 22.438.5 × 1000 =
  23. 23.8.8 ÷ 1000 =
  24. 24.9.06 × 100 =
  25. 25.141.1 × 1000 =
  26. 26.7.22 ÷ 1000 =
  27. 27.249.3 × 1000 =
  28. 28.8.48 × 10 =
  29. 29.258.7 × 10 =
  30. 30.7.92 × 10 =
  31. 31.249.3 × 1000 =
  32. 32.213.9 ÷ 10 =
  33. 33.241.9 ÷ 1000 =
  34. 34.47.96 ÷ 1000 =
  35. 35.17.79 × 10 =
  36. 36.39.28 ÷ 100 =
  37. 37.27.89 ÷ 1000 =
  38. 38.229.1 ÷ 100 =
  39. 39.240.8 × 10 =
  40. 40.3.94 ÷ 1000 =

Answer key

  1. 2.884
  2. 394.8
  3. 21.04
  4. 0.0194
  5. 4.413
  6. 4.774
  7. 0.00488
  8. 1.232
  9. 0.569
  10. 20170
  11. 2.923
  12. 95500
  13. 0.755
  14. 4.504
  15. 4395
  16. 931
  17. 1.02
  18. 41810
  19. 67
  20. 0.00125
  21. 2.815
  22. 438500
  23. 0.0088
  24. 906
  25. 141100
  26. 0.00722
  27. 249300
  28. 84.8
  29. 2587
  30. 79.2
  31. 249300
  32. 21.39
  33. 0.2419
  34. 0.04796
  35. 177.9
  36. 0.3928
  37. 0.02789
  38. 2.291
  39. 2408
  40. 0.00394

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