一千九百九十四又二分之一乘以七十九加二二十五分之六乘以七百九十加二百四十四点九,用简便方法计算

2024-10-30 14:08:10
推荐回答(1个)
回答1:

1994又1/2×79+6/25×790+244.9
=1994又1/2×79+2.4×79+3.1×79
=(1994又1/2+2.4+3.1)×79
=2000×79
=158000