用简便方法5.6×3又3/5+0.19×36+2又1/2×3.6=
问题描述：
用简便方法5.6×3又3/5+0.19×36+2又1/2×3.6=
答
原式=5.6x3.8+0.19x36+2.5x3.6=5.6x3.8+1.9x3.6+2.5x3.6=5.6x3.8+（1.9+2.5）x3.6=5.6x3.8+4.4x3.6=（10-4.4）x3.8+4.4x3.6=10x3.8-4.4x3.8+4.4x3.6=38+4.4x（-3.8+3.6）=38-0.88=37.12