①
②36×()
③
12÷0.9≈
12÷0.03=
25×40%=
2.4-2.4×0.5=
8×5÷8×5=
8.7﹣7=
÷=
4﹣﹣=
7×÷7×=
44÷=
75÷10%=
0.9+99×0.9=
93=
547+198=
0.6-0.28=
5.5×=
3.6÷0.36=
7.7÷=
=
×5÷×5=
4.25×3.6+57.5×0.36
⑴1.92÷2.5÷0.4 ⑵ ⑶
3.8×99+3.8 2.8+4.36+5.64 [×(-)]÷
0.5152>0.5152>0.5152>0.5152。