520×20% =
3÷0.1% =
0.5÷5%= 9÷×= 3÷4+= 3﹣=
8××0.125= ÷15= ×1.6= 40%+1.4=
21×=
÷3=
=
0×=
4×+4×=
÷4=
+=
÷5=
÷9÷=
65×=
7×=
÷=
×÷×=
+= -= 15×= 2.1÷=
8÷= ×= ÷10= 1.5÷0.3=
(+)×12= 7×÷7×=