问题
填空题
31×25×4=31×(______×______)
8×36+8×64=______×(______+______)
答案
(1)31×25×4,
=31×(25×4),
=31×100,
=3100;
(2)8×36+8×64,
=8×(36+64),
=8×100,
=800.
故答案为:(1)25、4.(2)8、36、64.
31×25×4=31×(______×______)
8×36+8×64=______×(______+______)
(1)31×25×4,
=31×(25×4),
=31×100,
=3100;
(2)8×36+8×64,
=8×(36+64),
=8×100,
=800.
故答案为:(1)25、4.(2)8、36、64.