39.9k views
11 votes
Convert the recurring decimal 2.1363636 to a mixed number

User Carebear
by
7.4k points

2 Answers

3 votes

Answer:

2 + 57/550

Explanation:

User Thvanarkel
by
8.3k points
9 votes

9514 1404 393

Answer:

2 3/22

Explanation:

Multiply by 100.

213.6363...

Subtract the original.

213.6363... -2.1363... = 211.5

Divide this by 99.

211.5/99 = 2115/990 = 2 135/990 = 2 3/22

_____

The original number you multiply by is 10^n, where n is the number of repeating digits. Then the number you divide by is (10^n -1). Here, those values are 100 and 99, because there are 2 repeating digits.

User Xnnyygn
by
7.9k points

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