③ 820cm3=dm3 ④ 0.06m3 =dm3
3.14×16=
3.8+6.2 =
0.65 ÷ 1.3 =
×33=
-=
1 ÷ =
75×10%=
+×2=
① 26+24×(-) ②×25+39×0.375+36×37.5% ③1-÷-
①8:3=24:x ② ③