用竖式计算(画“△”的要验算)642÷6= 963÷8= △363÷5=
(永嘉县)怎样简便就怎样算. 2.7×+1.3× 24×[(﹣)÷] 143﹣6.46﹣3.54.
(龙湾区)解方程 :x=:0.6 x﹣x=.
(桐庐县)解方程.①0.5x=3.5②﹣0.1x=0.05③0.36:8=x:25.
(桐庐县)计算,能简算的要简算.①175+25﹣112②8.02×99+8.92③×+×+④(+)×7×5⑤×(0.75﹣)⑥+×(2.5﹣)
(玉环县)求未知数x x﹣25×0.4=140 x:0.45=30:0.09 x+x=2.2.