①15÷x=
②x-×=21
③
④
5.3÷0.01=
80%:6=
0.75+99×0.75=
=
×75% =
12÷()=
8×0.5÷0.5×8=
1-26%= 3.5×= 18÷=
÷0.15= 10÷10%= 80×(0.875+)=
()×36
①60×()
②9.6×
③2019÷
④×101-
⑤
⑥2×80%+0.8×6.5+1.5×
×8<40
25>4×