UC知道简便计算7.5×2.3＋1.9×2.5 求解
来源：百度知道 编辑：UC知道 时间：2024/06/24 00:25:03
7.5×2.3＋1.9×2.5
=3*2.5*2.3+1.9×2.5
=6.9*2.5+1.9×2.5
=(1.9+6.9)×2.5
=8.8*2.5
=4*2.2*2.5
=10*2.2
=22
7.5×2.3＋1.9×2.5
=(2.5×3)×2.3+1.9×2.5
=2.5×(3×2.3)+1.9×2.5
=2.5×6.9+1.9×2.5
=2.5×(6.9+1.9)
=2.5×8.8
=2.5×4×8.8÷4
=2.5×4×(8.8÷4)
=10×2.2
=22
7.5X2.3+1.9X2.5
=(10-2.5)X2.3+1.9X2.5
=10X2.3-2.5X2.3+1.9X2.5
=23-(2.3-1.9)X2.5
=23-0.4X2.5
=23-1
=22
7.5×2.3＋1.9×2.5
=7.5×0.4+7.5×1.9+1.9×2.5
=3+19=22
7.5*2.3+1.9*2.5
=(10-2.5)*2.3+1.9*2.5
=10*2.3-2.5*2.3+1.9*2.5
=23-(2.3-1.9)*2.5
=23-0.4*2.5
=23-1
=22
7.5×2.3＋1.9×2.5
=7.5×0.4+7.5×1.9+1.9×2.5
=3+19=22