3.14×20= 2×= 1+= ()×9=
72÷= 1.5×100= 1.25×8= 99×0.8+0.8=
①1-0.01=
②0.22=
③0.7÷0.1=
④6-=
⑤
⑥120%-1=
⑦÷60%=
⑧÷=
980÷70=
1÷0.01=
10-1.25=
6.3×10%=
16×0.25=
1÷3×=
0.9+99×0.9=
4.9元
3.1元
6.5元
8.7元