1÷=
2÷ = 2.6÷20%= ×8= - =
4×30%= ÷ = ×45%= 1-90.8%=
×16= × = 9× = × =
÷2= 12÷ = ÷ = ÷ =
36× = 18÷ = 7× = =
×16= 2.5× = × = 0× + =
1÷ = ÷ = ÷ = × ÷ =