8.8╳1.25╳100除以4 简便运算

2024-12-25 18:18:29
推荐回答(1个)
回答1:

原式
=(1.1x8)x1.25x100÷4
=1.1x(8x1.25)x100÷4
=1.1x10x100÷4
=11x100÷4
=11x25
=10x25+1x25
=250+25
=275