题目内容
判断对错.
12-8÷4=1
( )
(12-8)÷4=10
判断对错
3.3÷[0.8×(12.5+1.25)]
=3.3÷[0.8×12.5+0.8×1.25]
=3.3÷[10+1]
=3.3÷11
=0.3
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