121X69—121 121X32简便方法?

2025-02-24 00:46:31
推荐回答(2个)
回答1:

121×69-121+121×32
=121×(69-1+32)
=121×(68+32)
=121×100
=12100

回答2:

121×69-121+121×32
=121×(69-1+32)
=121×100
=12100