15×0.6%=
24÷80%=
1-85%=
6.6÷2.2=
10÷10%=
0.6+0.4×=
×3= ×13= 15×= 18×=
×= ×= ×= ×=
× ×2= 1 -45%= 52-42=
12%×300= ÷5× = ÷0.5= 120÷10%=
×16= × = 9× = × =
÷2= 12÷ = ÷ = ÷ =
3.14×6= 2×3.14×12= + =
0÷20%= 60×30%= 25÷40%=
36× = ÷ = 3× ÷3× =
李老师购买的文具是,购买的数量是 。