6.4×4.5+3.6×45的简便计算急.
问题描述：
6.4×4.5+3.6×45的简便计算
急.
答
6.4*4.5+3.6*45
=6.4*4.5+36*4.5
=(6.4+36)*4.5
=42.4*4.5
=106*0.4*18*0.25
=(106*18)*(0.4*0.25)
=1908*0.1
=190.8
答
6.4×4.5+3.6×45
=6.4×4.5+36×4.5
=(6.4+36)×4.5
=42.4×4.5
=190.8
答
6.4×4.5+3.6×45
=(6.4+3.6)×10×(45÷10)
=10×10×4.5
=100×4.5
=450
答
=6.4×4.5+3.6×4.5
=4.5×（6.4+3.6）
=4.5×10=45
答
6.4×4.5+3.6×45
=0.64×45+3.6×45
=45×(0.64+3.6)
=45×4.24
=190.8
答
6.4×4.5+3.6×45
=6.4×4.5+36×4.5
=4.5×(6.4+36)
=4.5×42.4
=190.8