简算,8×18.6+1.8×82.4-180%=?
问题描述:
简算,8×18.6+1.8×82.4-180%=?
答
1.8×﹙18.6+82.4-1﹚=180
答
1.8×18.6+1.8×82.4-180%
=1.8×(18.6+82.4)-180%
=1.8×101-180%
=181.8-1.8
=180