简便运算）7.6*27.3+3.8*45.4
问题描述：
简便运算）
7.6*27.3+3.8*45.4
答
原式=3.8*2*27.3+3.8*45.4
=3.8*54.6+3.8*45.4
=3.8*(54.6+45.4)
=380
答
7.6*27.3+3.8*45.4
=3.8*2*27.3+3.8*45.4
=3.8*54.6+3.8*45.4
=3.8*（54.6+45.4)
=3.8*100
=380
答
7.6×27.3+3.8×45.4
=3.8×2 ×27.3+3.8×45.4
=3.8×(2×27.3)+3.8×45.4
=3.8×54.6+3.8×45.4
=3.8×(54.6+45.4)
=3.8×100
=380
答
7.6*27.3+3.8*45.4
=7.6*27.3+3.8*2*22.7
=7.6*27.3+7.6*22.7
=7.6*(27.3+22.7)
=7.6*50
=380
答
7.6*27.3+3.8*45.4
=7.6*27.3+3.8*2*22.7
=7.6*27.3+7.6*22.7
=7.6*(27.3+22.7)
=7.6*50
=380
等于380
还有什么不明白的吗