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(1/3+1/4)×33×44 简算
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人气:135 ℃ 时间:2020-05-27 19:40:07
解答
答:
(1/3+1/4)×33×44
=(1/3)×33×44+(1/4)×33×44
=11×44+11×33
=11×(44+33)
=11×77
=11×11×7
=121×7
=847
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