Question

二分之一加五分之四减十分之三简便计算

Answer 1

解题

Answer 2

1/2 + 4/5 - 3/10
= (5 + 8 - 3)/10
= 10/10
= 1

追答

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Answer 3

1/2+4/5-3/10
=5/10+8/10-3/10
=1