=
0×=
÷0.75=
×0.4=
+=
=
1.05-0.85= 100÷25÷4= 7.5× =
( + )×24= 1÷0.125= × ×70=
1-= ×= 6÷= += ×4×0=
×= ×4= 1÷= ÷1= 1-÷=
×16= × = 9× = × =
÷2= 12÷ = ÷ = ÷ =
馒头:0.6元/个
酸奶:1.5元/杯
水饺:1.7元/碗
三鲜粉:3.7元/碗
牛肉面:4.0元/碗