76×52 76 49-76用简便方法怎么做?

2024-12-01 13:57:46
推荐回答(2个)
回答1:

76X52+76X49-76
=76X(52+49-1)
=76X100
=7600

回答2:

76×52+76×49-76
=76×(52+49-1)
=76×100
=7600