简便运算3.78×99+3.78

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简便运算3.78×99+3.78
简便运算3.78×99+3.78

简便运算3.78×99+3.78
3.78×99+3.78
=3.78×(99+1)
=3.78×100
=378

3.78*(1+99)=378

提取公因式3.78
上式=(1+99)*3.78=378

3.78×99+3.78
=3.78×99+3.78 ×1
=3.78×(99+1)
=3.78×100
=378

3.78×99+3.78
=(99+1)×3.78
=100×3.78
=378

3.78×99+3.78
=3.78×(99+1)
=3.78×100
=378