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1,数学算数题

5x(5-1/5)=24

数学算数题

2,算数题目哈

14/5000=0.0028元一个

算数题目哈

3,数学计算题

1×1/2+1/2×1/3+1/3×1/4+1/4×1/5+1/5×1/6+1/6×1/7 =(1-1/2)+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)+(1/6-1/7) =1-1/7 =6/7

数学计算题

4,数学算式题目

((3/7)+3)*7 (3+(3/7))*7 (3+(3/7))*7 ((3/7)+3)*7 7*(3+(3/7))
3-(-3)×7=24
(+7)×(+3)+[(-3)+(+7)]=24

5,数学计算题

17250
14544
2550
【1+100】+【2+99】…+【55+56】=101*100÷2=5050
3(3+4+5+....+98)=14544

6,数学计算题

-√3/2
负二分之根号三
你好,正确答案是负二分之公号三.相信我吧,没错.望采纳
是负二分之根号三
cos210=负二分之根号三
√3/2

7,数学计算题

(1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4) =[1+(1/2+1/3+1/4)]*(1/2+1/3+1/4+1/5)-[1+(1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)] =(1/2+1/3+1/4+1/5)+(1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1/2+1/3+1/4)-(1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)] =(1/2+1/3+1/4+1/5)-(1/2+1/3+1/4)=1/5

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