问题
解答题
花园小学组织四、五年级的学生参加社会实践活动.四年级109人,平均每人掰玉米31个;五年级110人,平均每人掰玉米38个.估算一下,四、五年级的学生大约各掰玉米多少个?
答案
(109×31+110×38)÷(109+110),
≈(3300+4400)÷220,
=7700÷220,
=35(个);
答:四、五年级的学生大约各掰玉米35个.
花园小学组织四、五年级的学生参加社会实践活动.四年级109人,平均每人掰玉米31个;五年级110人,平均每人掰玉米38个.估算一下,四、五年级的学生大约各掰玉米多少个?
(109×31+110×38)÷(109+110),
≈(3300+4400)÷220,
=7700÷220,
=35(个);
答:四、五年级的学生大约各掰玉米35个.
完形填空。 | ||||
My name is Sonia Hall. I am an__1__ girl. I am 13. There are four people in my family. They are __2__parents, my brother and I. I also have a cousin. She is my uncle's__3__ .We are good __4__.We__5__ping-pong every day.We like __6__very much. I __7__a bedroom(卧室). A computer and a CD player are __8__a desk . The bookcase is near the door and my books are on it. I__9__ sports very much, so(所以) the books are about(关于) _10__. I like football and baseball.
|