300﹣187=
7.2÷36=
8.63+5=
4.7×100=
2600﹣279﹣321=
+=
×=
72÷=
-=
××=
45÷75%=
7+20%=
9.47+0.23=
10÷0.1%=
25×40%=
9÷15=
0.5÷25%=
3﹣85%=
1﹣+= 1÷×= 0.5﹣+0.5﹣=
8.1+= (+)×24= 7××7÷=
= 10÷1%= 5.6÷2= 1×7=
= = 1﹣= 5×÷5×=
÷2=
1÷ - ÷1=
8×1.25=
( + )×12=
0.32=
4.8a+0.2a=
2.07+0.3=
21×498≈
0.45×0.8 = 5.6÷10 =
结合统计图,回答下列问题: