1.2÷(9.6÷2.4)×2.5的简便算法是?
问题描述:
1.2÷(9.6÷2.4)×2.5的简便算法是?
答
1.2÷(9.6÷2.4)×2.5
=1.2×2.5÷(9.6÷2.4)
=0.3×(4×2.5)÷4
=0.3×10÷4
=0.75
有些牵强!直接算就很好!