102*45+45_3*45的简便计算?

2025-03-25 22:50:02
推荐回答(2个)
回答1:

102*45+45-3*45
=(102+1-3)*45
=100*45
=4500

回答2:

102ⅹ45+45-3ⅹ45
=45x(102+1-3)
=45x100
=4500