根据题意应该先算乘法再算除法最后算减法原式等于100-4.32×15÷12
=100-64.8÷12
=100-5.4=94.6
100-4.32×15÷12
=100-64.8÷12
=100-5.4
=94.6
8.5×5.6+4.5×8.5
=8.5×(5.6+4.5)
=8.5×10.1
=85.85
展开
100-4.32×15÷12
=100-1.08×4×3×5÷12
=100-1.08×5
=100-5.4
=94.6
这是求简便运算的方法
100-4.32×15÷12
=100-4.32×5/4
=100-1.08×5
=100-5.4
=94.6