326-154+174-246的简便算法

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326-154+174-246的简便算法

326-154+174-246
=326-246+174-154
=80+20
=100

326-154+174-246
=(326+174)-(154+246)
=500-400
=100

326-154+174-246
=(326+174)-(154+246)
=500-400
=100

326-154+174-246
=326+174-154-246
=(326+174)-(154+246)
=500-400
=100

326-154+174-246
=326+174-154-246
=326+174-(154+246)
=500-400
=100