操场上有25人踢球,17人跳绳,30人打羽毛球。8l3c*@7x)e2\(C;n7q7C'd3Y-K
(1)操场上一共有多少人在活动?8l3c*@7x)e2\(C;n7q7C'd3Y-K
算式:提示6]'S1f;p8B3p;P1W3H;Q'^4h8l3c*@7x)e2\(C;n7q7C'd3Y-K
答:操场上一共有*F:}(n:N2V)?1M+R,e8D)d/O人在活动。8l3c*@7x)e2\(C;n7q7C'd3Y-K
(2)有19人回教室去了,现在操场上还剩多少人?8l3c*@7x)e2\(C;n7q7C'd3Y-K
算式:提示5^)A3M)H;c3o1C8l3c*@7x)e2\(C;n7q7C'd3Y-K
答:现在操场上还剩5z1\;p8^/B+W)R7_,Y人。8l3c*@7x)e2\(C;n7q7C'd3Y-K