8195+1921 If these two numbers total 6879, what do the two numbers below total? 8216+1909

admin2019-03-19  47

问题 8195+1921
If these two numbers total 6879, what do the two numbers below total?
8216+1909

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答案15189

解析 (将纸颠倒过来,将数字相加。1261+5618=6879,6061+9128=15189。)
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