52-30=
12×6=
5.6+7=
36+64=
-=
÷=
×36=
+=
30×50=
4.8×100=
3600÷90=
0.3÷100=
10﹣0.36=
+ =
60× =
÷ =
× × =
11﹣ ﹣ =
1.6+0.4=
12×3=
0.45÷9=
1﹣0.35=
18×=
1﹣=
=
2.4÷0.04= ×24=
239+85=
1.29+0.18= 6÷ =
0.8-0.26=
0.25﹣0.18=
3 ×4=
0.3×400=
39.5÷8=
×10=
52=
268+332=
803-207= ÷5= 798+150= + =
0.25×8= 1.5- = 7.5÷ = 0.77+0.3=
9.8-8= × = 45.54÷45= 24× =
占获奖作品总数的几分之几
获奖作品件数
一等奖
二等奖
90
三等奖
1.5×1= 910÷70= 2.2﹣1.9= 6÷7= 435+199=
+= -= ÷= 20×= ×=
62+48=