1.3+0.7= 0.102×100= 25×3= 99+68= 1.12﹣1.1=
200÷8= 48÷1000= 1-0.25= 14÷7×2= 1.4-0.5=
0.5+2.3= 120÷30= 7.2+0.8= 4.3-1.2=
2-0.7= 2.4-1.6= 24×5= 0.3+0.47=
240÷6= 1.3-0.6= 2.3+5.7= 360-360÷6=
进价
降价前售价
降价后售价
56元/个
78元/个
48元/个
=
+=17
+=