Mathematics
Senior High
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この4問の解き方を教えてください🙏🙏

循環小数

Answers

✨ Best Answer ✨

(1)
x=0.55…とおく

10x=5.555…
-)x=0.555…
9x=5
x=5/9

(2)
x=3.2525… とおく

100x=325.25…
-) x= 3.25…
99x=322
→ x=322/99

(3)
x=0.12341234…とおく

10000x=1234.1234…
-) x= 0.1234…
9999x=1234
x=1234/9999

(4)
x=0.32121… とおく

100x=32.121…
-) x= 0.321…
99x=31.8
→ 990x=318
→ 165x=53
→ x=53/165

madoka🌱

丁寧にありがとうございます🙇‍♂️参考にさせていただきます!

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