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36*19+64*144如何简便
人气:387 ℃ 时间:2020-04-21 06:46:27
解答
36*19+64*144
= 19*36+64*4*36
= 19*36+256*36
= (19+256)*36
= 275*2*2*9
= 550*2*9
= 1100*9
= 9900
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