简算 18.75+(21.25--4.59)
问题描述:
简算 18.75+(21.25--4.59)
答
18.75+(21.25-4.59)=18.75+21.25-4.59=40-(5-0.41)=40-5+0.41=35+0.41=35.41
答
去掉括号
答
18.75+(21.25-4.59)
=(18.75+21.25)-4.59
=40-4.59
=35.41
答
18.75+21.25-4.59
=40-4.59
=35.41