==
60×90=
120-18-2=
50×110=
25×4×0=
210×50=
540÷90=
90×12=
50―5×6=
70+400=
105×40=
9+9×0=
27×4÷27×4=
6.5+2.5= 1.23÷3= 5.2×5= 7÷14%=
= ﹣= ×= 0÷2022=
13.4﹣7.7= = = 299×5≈