简便运算.22×(63-1260÷28)
问题描述:
简便运算.22×(63-1260÷28)
答
=22×(63-45)
=22×18
=20²-2²
=396
简便运算.22×(63-1260÷28)
=22×(63-45)
=22×18
=20²-2²
=396