6.8*10.2的简便计算
解: 6.8*10.2
=6.8*(10+0.2)
=68+1.36
=69.36
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第1个回答 2016-08-26
6.8*10.2
=(7-0.2)(10+0.2)
=7×10-0.2*10+7*0.2-0.2*0.2
=70-2+1.4-0.04
=69.36
回答完毕~
满意请【采纳】.本回答被网友采纳
=(7-0.2)(10+0.2)
=7×10-0.2*10+7*0.2-0.2*0.2
=70-2+1.4-0.04
=69.36
回答完毕~
满意请【采纳】.本回答被网友采纳
第2个回答 2016-08-26
6.8*10.2的简便计算
=6.8x(10+0.2)
=68+1.36
=69.36
=6.8x(10+0.2)
=68+1.36
=69.36