9.8/3.5 小学六年级数学简算 速度

来源：蜘蛛抓取(WebSpider) 时间：2012-12-22 02:05 标签： 奥数简算
124×9.8可以怎样简算_百度知道
124×9.8可以怎样简算
如果您认可我的回答.2)=124×10-124×0，谢谢124×9.2很高兴为您解答!有不明白的可以追问.2==124×(10-0.8=1215。请点击下面的【选为满意回答】按钮
采纳率：77%
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124*（10-0.2）=124*10-124*0.2=
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0.89×65 8.9×3.5-0.89怎样简算
89=89-0.89×100-0.89×65+0.89=0.89×65+8.89=0.89=0.89×(65+35)-0.9×3.89×35-0.5-00.89=88
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