346-100+99-98+97-96+95-94+.+5-4+3-2+1怎么算
346-100+99-98+97-96+95-94+.+5-4+3-2+1怎么算
346-(100-99)-(98-97)-(96-95)-94+...+5-(4-3)-(2-1)
=346-50=296
346-100+99-98+97-96+95-94+.+5-4+3-2+1
346-100+99-98+97-96+95-94+...+5-4+3-2+1
=346-[(100-99)+(98-97)+.......+(2-1)]
=346-50x1
=346-50
=296
346-100+99-98+97-96+95-94++5-4+3-2+1=346-?x?=346-?=? 这题怎么算啊!
=346-1*50=346-50=296
346-100+99-98+97-96+95_94+.+5-4+3-2+1 =346-口×口=346-□=口
=346+(-100+99)+(-98+97)+(-96+95)...+(-6+5)+(-4+3)+(-2+1)
=346-1×50
=346-50
=296
100 98 96 94 . 4 2-99-97-95-.-5-3-1怎么算
100 - 99 = 1
98 - 97 = 1
96 - 95 = 1
......
6 - 5 = 1
4 - 3 = 1
2 - 1 = 1
那么,
2 到 100 是 50 个偶数,
结果就是 50
346-100+99-98+97-96+95-94******+5-4+3-2+1是多少
=346+(-1*50)
=346-50=296
-100+99=-1,-98+97=-1.......这里有100/2个-1,即-1*50
346-100+99-98+97-96+95-94+******+5-4+3-2+1=346-多少乘多少
346-100+99-98+97-96+95-94+******+5-4+3-2+1
=364-(100-99+98-97+....+2-1)
=364-[(100-99)+(98-97)+....+(2-1)]
=364-1*50
=364-50
=314