12×45的简便运算

2025-03-04 22:11:17
推荐回答(4个)
回答1:

12*45
=12*(50-5)
=12*50-12*5
=600-60
=540

回答2:

45x12
=(10+2)×45
= 45+90
= 540

回答3:


回答4:

2X6X5X3X3=10X54=540