3.47×(3.75-2.5)+4.53×1.25
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3.47×(3.75-2.5)+4.53×1.253.47×(3.75-2.5)+4.53×1.253.47×(3.75-2.5)+4.53×1.253.47X(3.75—2.5)+4.53x1.25
3.47×(3.75-2.5)+4.53×1.25
3.47×(3.75-2.5)+4.53×1.25
3.47×(3.75-2.5)+4.53×1.25
3.47X(3.75—2.5)+4.53x1.25
=3.75x1.25+4.53x1.25
=1.25x(3.47+4.53)
=1.25x8
=10
3.47×(3.75-2.5)+4.53×1.25
=3.47×1.25+4.53×1.25
=(3.47+4.53)×1.25
=8*1.25
=10
10
=3.47×1.25+4.53×1.25
=(3.47+4.53)×1.25
=8×1.25
=10
3.47×(3.75-2.5)+4.53×1.25
3.47乘(3.75-2.5)+4.53乘1.25.如何用简便方法做.
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