0.19+0.1= 20×70%= 1﹣= 2.7×4×2.5=
7.53﹣0.03= += +×0= 0.99÷0.1=
0.8×0.2=
=
0÷23×87=
5﹣=
8.8÷1%=
①2.5×99+2.5
②
③
④
①
④39.7+180÷1.5
⑤
⑥
①8(x﹣6.2)=41.6
②15.8﹣ +14.2﹣
③0.125×76+12.5%×24
④ x+ x=30