87.97+8.9×87.97+87.97×0.1
解:原式=87.97×(1+8.9+0.1)
=87.97×10
=879.7
运用乘法分配律的逆运算,同时提取公因数87.97 原式=87.97×(1+0.1+8.9)=879.7
87.97+8.9×87.97+87.97×0.1
=87.97×1+87.97×8.9+87.97×0.1
=87.97×(1+8.9+0.1)
=87.97×10
=879.7
原式=87.97×1+87.97×8.9+87.97×0.1
=87.97×(1+8.9+0.1)
=87.97×10
=879.7
谢谢!