3.86—9÷7.2 0.85×(21.9--7.6÷4) 3.78÷3.6×(0.26+0.3) 脱式计算
问题描述:
3.86—9÷7.2 0.85×(21.9--7.6÷4) 3.78÷3.6×(0.26+0.3) 脱式计算
答
3.86—9÷7.2
=3.86-1.25
=2.61
0.85×(21.9--7.6÷4)
=0.85×(21.9-1.9)
=0.85×20
=17
3.78÷3.6×(0.26+0.3)
=3.78÷3.6×0.56
=1.05×0.56
=0.588