如题所述
简便计算
97x38
=(100-3)x38
=100x38-3x38
=3800-114
=3686
97x38
=(100-3)x38
=100x38-3x38
=3800-114
=3686
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第1个回答 2020-04-25
原式=(100-3)x38
=100x38-3x38
=3800-3x(40-2)
=3800-120+6
=3686
=100x38-3x38
=3800-3x(40-2)
=3800-120+6
=3686
第2个回答 2020-04-25
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