0.125×16= 1.04×5= 7×12÷7×120=
18.8×20%= ×0.55= 123+﹣123+=
+ = 1- = 1.25× = - =
0.9+99×0.9= 0÷ = 1÷ = -0.5=
0.6×101= 3.2×2.5×12.5=
参加跳远的有:①⑥⑨⑪⑮⑳
参加跑步的有:①⑤⑥⑨⑮