5.4-0.25=0.75的简便,

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5.4-0.25=0.75的简便,5.4-0.25=0.75的简便,5.4-0.25=0.75的简便,5.4-0.25=0.75的简便,要答案和解释.5.4-0.25-0.75=5.4-(0.25+0

5.4-0.25=0.75的简便,
5.4-0.25=0.75的简便,

5.4-0.25=0.75的简便,
5.4-0.25=0.75的简便,要答案和解释.
5.4-0.25-0.75
=5.4-(0.25+0.75)
=5.4-1
=4.4
把后两个数先相加.