32x53-96简便计算快快快快快??????

日期:2021-03-29 02:41:08 人气:1

32x53-96简便计算快快快快快??????

原式
=32x53-32x3
=32x(53-3)
=32x50
=16x2x50
=16x100
=1600
    A+
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