456×26-56×26和68×92+32×92怎么巧算

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456×26-56×26和68×92+32×92怎么巧算
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456×26-56×26和68×92+32×92怎么巧算
456×26-56×26和68×92+32×92怎么巧算

456×26-56×26和68×92+32×92怎么巧算
456×26-56×26
=(456-56)×26
=400×26
=10400
68×92+32×92
=(68+32)×92
=100×92
=9200
就是考了乘法对加减法的分配率.

456×26-56×26=(456-56)x26=400x26=10400

(456-56)*26=1040
(68+32)*92=9200