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15问答网 > 脱式计算 9⼀5×25%+1⼀4+2.2-0.25

脱式计算 9⼀5×25%+1⼀4+2.2-0.25

2025-03-26 13:42:06

推荐回答（4个）

回答1：

9/5×25%+1/4+2.2-0.25
=9/20+1/4+2.2-0.25
=（9/20+2.2）+（1/4-0.25）
=2.65+0
=2.65

回答2：

原式=9/5*1/4+2.2
=9/20+2.2
=0.45+2.2
=2.65
25%=1/4=0.25 这不是简便运算吧，注意恒等式就好了

回答3：

2.65

回答4：

=1.8乘0.25加2.2=3.45

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