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20 votes
Write the missing decimal so that each pair adds to 1

1/2 + something = 1
2/5 + something= 1
9/10 + something= 1

1 Answer

11 votes

Explanation:

1/2 + 1/2 = 1

2/5 + 3/5= 1

9/10 + 1/10= 1

User Kohsuke Kawaguchi
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