8× = 2.8﹣
=
×1=
÷9=
×20=
+
=
÷
=
+
=
×0.2= 1÷
=
÷9=
×
=
÷
= 1﹣
= 150%﹣150%=
24÷ =
÷4= 0÷
=
×
=
×24×
=
×0=
×
= 6
= 3.6×
=
×70=
+
=
﹣0= 55%﹣
= 2.4÷0.4= 2÷0.5=