解答1.2x3.8+2.4x1.9+4.8x0.6的简便方法?
问题描述:
解答1.2x3.8+2.4x1.9+4.8x0.6的简便方法?
答
1.2x3.8+2.4x1.9+4.8x0.6
=1.2x3.8+1.2x3.8+1.2x2.4
=1.2x(3.8+3.8+2.4)
=1.2x10
=12