问题
填空题
在45,21,14,456中,______是3的倍数.
答案
(4+5)÷3
=9÷3
=3,
(2+1)÷3
=3÷3
=1,
(1+4)÷3
=5÷3
=
,5 3
(4+5+6)÷3
=15÷3
=5,
因此,45,21,456是3的倍数.
故答案为:45,21,456.
在45,21,14,456中,______是3的倍数.
(4+5)÷3
=9÷3
=3,
(2+1)÷3
=3÷3
=1,
(1+4)÷3
=5÷3
=
,5 3
(4+5+6)÷3
=15÷3
=5,
因此,45,21,456是3的倍数.
故答案为:45,21,456.