49×47 49x52 49怎么简便运算?

2025-03-21 09:42:27
推荐回答(2个)
回答1:

49×47+49×52+49
=49×(47+52+1)
=49×100
=4900

回答2:

=49×(47+52+1)
=49×100
=4900