Question

一道奥数题 简便运算的 4年级

题是这样的：999*222+333*334 要求：简便运算

Answer 1

999×222+333×334
=333×3×222+333×334
=333×（666+334）
=333000

Answer 2

999*222+333*334
=(333*3)*222+333*334
=333*666+333*334
=333*(666+334)
=333*1000
=333000

Answer 3

999*222+333*334
=(333*3)*222+333*334
=333*666+333*334
=333*(666+334)
=333*1000
=333000