Question

49×87加51×87用简便算法怎么算

49×87加51×87用简便算法怎么算

Answer 1

原式
=49x87+51x87
=(49+51)x87
=100x87
=8700

供参考。

Answer 2

49×87加51×87用简便算法怎么算

=(49+51)×87
=100×87
=8700.

Answer 3

49×87+51×87=(49+51)×87=100×87=8700.