+=
1﹣=
0.4+=
﹣+=
+ = ﹣ = + = ﹣ =
15× = × = × = 48× =
0.8+ = 3÷ = + = + = ÷ ×2=
× = ÷ = 6× = - = - × =
y+7y= 3a﹣a= 34﹣18.2= 7.2÷6= 2.9×101﹣2.9=
4.4+5.6= 0.02×10= 0.25×16= 1﹣ = 9.6×8÷9.6×8=
材料
鲜肉
面粉
蔬菜
调料
质量/克
175
▲
200
25
x
10
15
y
12