Question

(236-154-46)x78怎么简便计算

Answer 1

(236-154-46)x78怎么简便计算
=(246-10-46-154)x78
=(200-164)x78
=36x78
=2808

Answer 2

(236-154-46)x78
=[236 -（156 + 46）] x 78
=（236 - 200） x 78
=36 x 78
=36 x （80 - 2）
=36 x 80 - 36 x 2
=2880 - 72
=2808

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