Question

Tính bằng cách thuận tiện:

231 x 87 + 32 x 231 - 19 x  231

Answer 1

= 231 x (87 + 32 - 19)

= 231 x 100

= 23100

Answer 2

231 x 87 + 32 x 231 - 19 x  231

= 231 x (87 + 32 - 19)

= 231 x 100

= 23100

Answer 3

=> (87+32-19) x 231
=> 100 x 231
=> 23100

Answer 4

231 x 87 + 32 x 231 - 19 x  231

= 231 x (87 + 32 - 19)

= 231 x 100

= 23100

Answer 5

23100