如题所述
5.2-5.2*0.5-0.5=
先乘除后加减
5.2*0.5=2.6
5.2-2.6-0.5
=2.6-0.5
=2.1
先乘除后加减
5.2*0.5=2.6
5.2-2.6-0.5
=2.6-0.5
=2.1
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第1个回答 2021-10-07
5.2-5.2×0.5-0.5。用简便运算的方法,运算式中有乘法,有减法,所以先计算乘法。5.2-26-0.5
第2个回答 2021-10-07
5.2-5.2×0.5-0.5
=5.2×(1-0.5)-0.5
=5.2×0.5-0.5
=2.6-0.5
=2.1
=5.2×(1-0.5)-0.5
=5.2×0.5-0.5
=2.6-0.5
=2.1
第3个回答 2021-10-08
原式=5.2(1-0.5)-0.5
=5.2*0.5-0.5
=0.5(5.2-1)
=0.5*4.2
=2.1
=5.2*0.5-0.5
=0.5(5.2-1)
=0.5*4.2
=2.1
第4个回答 2021-10-08
5.2-2.6*2*0.5-0.5=5.2-0.5-2.6=2.1