Question

2.5乘以8.6加7.6乘以8.6减去0.86用简便计算怎么

Answer 1

2.5x8.6+7.6x8.6-0.86
=2.5x8.6+7.6x8.6-8.6x0.1
=（2.5+7.6-0.1）x8.6
=10x8.6
=86
希望能帮到你！

Answer 2

2.5×8.6+7.6×8.6-0.86
=2.5×8.6+7.6×8.6-8.6×0.1
=（2.5+7.6-0.1）×8.6
=10×8.6
=86