(48-25)X36
=23*36
=（20+3）*36
=20*36+3*36
=828
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(48-25)X36简便运算
(48-25)X36
=23x36
=20x36+3x36
=720+108
=828
(48-25)×36
=23×36
=20×36+3×36
=728+108
=836
原式=23×36
=23×6×6
=78*6
=468
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