×60= × = 0.36× = 15:20=
÷2= 6÷ = 0.56÷ = :0.75=
5÷(1+)= 4×0.5= 0.75×= 1﹣1×=
+×= 24÷= ×0.25= +=
10﹣= 1﹣×= ×6÷×6= 1÷×=
的
×=
×30= ÷ = + = ÷ = 0× =
3.2÷0.4= 5- = × = 1.21× = ÷2.2=
+= 5÷= ×= ×÷=
÷3= += -= ×÷×=
-= 20×= 1÷= 3+8×=
×= ÷= -0.25= 3×÷3×=
÷= ÷6= ÷= ÷=
7×= ÷= 2×= 32×25%=
0××14= ×÷×=