1-12-2.5+2.88-6.5的简便计算?
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1-12-2.5+2.88-6.5的简便计算。
解:1-12-2.5+2.88-6.5
=-11+2.88-(2.5+6.5)
=-11+2.88-9
=-11-9+2.88
=-20+2.88
=-17.12
答:答案等于17.12。
解:1-12-2.5+2.88-6.5
=-11+2.88-(2.5+6.5)
=-11+2.88-9
=-11-9+2.88
=-20+2.88
=-17.12
答:答案等于17.12。
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1-12-2.5+2.88-6.5
=1+2.88-(12+2.5+6.5)
=3.88-21
=-17.12
=1+2.88-(12+2.5+6.5)
=3.88-21
=-17.12
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