更新时间:2022-08-05 09:45:46 145次访问
25×(53×2)
=25×2×(50+3)
=50×(50+3)
=2500+150
=2650
=25×106
=25×100+25×6
原式
=53×(25×2)
=53×50
=53×100÷2
=5300÷2
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