
6999999+599999+49999+3999+299+19+6的简便计算
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2016-05-15 · 知道合伙人教育行家
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6999999+599999+49999+3999+299+19+6
=6999999+1+599999+1+49999+1+3999+1+299+1+19+1
=7000000
+600000
+50000
+4000
+300
+20
=7654320
=6999999+1+599999+1+49999+1+3999+1+299+1+19+1
=7000000
+600000
+50000
+4000
+300
+20
=7654320
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