根据运算定律填空.(1)23×1117×34=23×______×______(2)320×79×9=320×(______×______)(3)(14+72)×114=______×______+______×______.-数学
题文
根据运算定律填空. (1)
(2)
(3)(14+
|
答案
(1)
=
=
=
(2)
=
=
=
(3)(14+
=14×
|
题文
根据运算定律填空. (1)
(2)
(3)(14+
|
答案
(1)
=
=
=
(2)
=
=
=
(3)(14+
=14×
|