8.2x4.6-0.2x4.6=4.6x(8.2-0.2)=4.6x8=36.8运用乘法分配率
8.2×4.6-0.2×4.6简便计算8.2×4.6-0.2×4.6=4.6×（8.2-0.2）=4.6×8=36.8简便计算结果为36.8
4.6x(8.2-0.2)=4.6x8=36.8
这个问题我来答提取数字4.6原式＝4.6×(8.2－0.2)＝4.6×8=36.8
