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简便计算4.69*8.92+89.2*0.527+892*0.4
人气:238 ℃ 时间:2020-02-02 22:19:31
解答
=8.92*(4.69+5.72+40)
=8.92*10.4+40)
=8.92*50.4
=8.92*50+8.92*0.4
=409.568
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