当前位置:
试题详情
从如图四张数字卡片中取出三张,按要求组成三位数.
(1)可以组成的三位数有:450,405,470,407,540,504,507,570,457,475,574,547,745,754,740,704,750,705450,405,470,407,540,504,507,570,457,475,574,547,745,754,740,704,750,705;
(2)这些数中:奇数有 405,407,507,457,475,547,745,705405,407,507,457,475,547,745,705;偶数有 450,470,540,504,570,574,754,740,704,750450,470,540,504,570,574,754,740,704,750;
(3)3的倍数有 450,405,507,570,540,504,750,705450,405,507,570,540,504,750,705;5的倍数有 450,405,470,540,570,475,745,740,750,705450,405,470,540,570,475,745,740,750,705;
(4)既是3的倍数,又是2的倍数有 450,540,504,570,750450,540,504,570,750;
(5)既是3的倍数,又是5的倍数有 450,405,540,570,750,705450,405,540,570,750,705;
(6)同时是2、5和3的倍数的数有 450,540,570,750450,540,570,750.
【考点】奇数与偶数的初步认识;2、3、5的倍数特征.
【答案】450,405,470,407,540,504,507,570,457,475,574,547,745,754,740,704,750,705;405,407,507,457,475,547,745,705;450,470,540,504,570,574,754,740,704,750;450,405,507,570,540,504,750,705;450,405,470,540,570,475,745,740,750,705;450,540,504,570,750;450,405,540,570,750,705;450,540,570,750
【解答】
【点评】
声明:本试题解析著作权属菁优网所有,未经书面同意,不得复制发布。
发布:2025/1/7 23:0:1组卷:78引用:2难度:0.5