45*39+55*39的简便方法计算

2025-02-26 14:32:36
推荐回答(5个)
回答1:

=(45+55)*39=100*39=3900

回答2:

39×(45+55)
=39×100
=3900

回答3:

回答4:

=39X(45十557
=39X1OO
=3900

回答5:

=39×(45+55)
=39×100
=3900