计算:2005×3/8−0.375×1949+3.75×2.4的值为多少?
问题描述:
计算:2005×
−0.375×1949+3.75×2.4的值为多少? 3 8
答
2005×
-0.375×1949+3.75×2.43 8
=2005×0.375-0.375×1949+3.75×2.4
=2005×0.375-0.375×1949+0.375×24
=(2005-1949+24)×0.375
=80×0.375
=30.