Question

2.2×3.3×4.4+4.4×5.5怎样巧算

非常难的数学巧算哦！急！急！急！

Answer 1

2.2×3.3×4.4+4.4×5.5
=1.1×1.1×（2*3*4+4*5）
=1.21*44
=1.21*11*4
=13.31*4
=53.24

（X*11=X*10+X)

Answer 2

首先你的题目是不是错了!应该是下面的吧！

2.2×3.3+3.3×4.4+4.4×5.5
=3.3x(2.2+4.4)+4.4x5.5
=3.3x6.6+4.4x5.5
=3x6x1.1x1.1+4x5x1.1x1.1
=1.1x1.1x(3x6+4x5)
=1.21x38
=45.98