(苏州)计算下面各题,能简算的要简算. ①630÷18×24 ②0.7+3.9+4.3+6.1 ③16×+4× ④(7.5﹣7.5×0.6)÷4 ⑤(+÷3)× ⑥.
x-x=18.7
15.8-(6+÷12.5%)
10-÷×1
325×0.36+6.75×36
5.6×0.375+×5.4-0.375×0.9