三年级上册第九单元思考题:学校举行乒乓球比赛
- 时间:2020-04-22 15:41:35
- 分类:数学世界
- 阅读:166 次
三年级上册第九单元思考题:学校举行乒乓球比赛,A组、B组两个小组各有16人,每组两人一对进行比赛,负者被淘汰、胜者进入下一轮,最后两组第一名进行决赛。两个小组赛一共要进行多少场比赛?
解答:每个小组16人,第一轮要打8场,第二轮要打4场,第三轮要打2场,第四轮打1场。一共打:8+4+2+1=15(场)。
两个小组共打了:15+15=30(场)
最后加上两个小组第一名打的决赛,一共打了:30+1=31(场)
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