37.4-(8.6+7.24-6.6)简便计算
问题描述:
37.4-(8.6+7.24-6.6)简便计算
答
37.4-(8.6+7.24-6.6)
=37.4-(8.6-6.6+7.24)
=37.4-(2+7.24)
=37.4-9.24
=37.4-(10-0.76)
=37.4-10+0.76
=28.16