列竖式计算,*号题要验算.7.01﹣4.98= ;*71.7﹣7= ;*8.72+2.8= ;8.26﹣2.6= .
15.8-(6+÷12.5%)
10-÷×1
325×0.36+6.75×36
5.6×0.375+×5.4-0.375×0.9
求未知数(2分×2—4分)。= 3.5-0.7+8=16.4