公倍数应用题
- 时间:2020-05-23 15:41:47
- 分类:数学世界
- 阅读:137 次
一道公倍数应用题:五年级(2)班同学到森林公园去春游,准备乘16人的面包车或乘24人的中巴车。不论是专乘16人的面包车。还是专乘24人的中巴车,都正好坐满。五年级(2)班至少有多少同学去春游?
数学题解答:因为坐两种车都能正好坐满,说明五(2)班总人数一定是16和24的倍数,也就是它们的公倍数。需要把16和24都分解质因数,然后算出它们的最小公倍数,即为需求的人数。
16=2×2×2×2,24=2×2×2×3(16和24公有的质因数已用红色标出)
16和24的最小公倍数是:2×2×2×2×3=48。
答:五(2)班最少有48名同学。
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