{5/2-(3/8+1/6-3/4)×24}/5×(-1)
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{5/2-(3/8+1/6-3/4)×24}/5×(-1){5/2-(3/8+1/6-3/4)×24}/5×(-1){5/2-(3/8+1/6-3/4)×24}/5×(-1){5/2-(3/8+1/6
{5/2-(3/8+1/6-3/4)×24}/5×(-1)
{5/2-(3/8+1/6-3/4)×24}/5×(-1)
{5/2-(3/8+1/6-3/4)×24}/5×(-1)
{5/2-(3/8+1/6-3/4)×24}/5×(-1)
=[5/2-(3/8)*24+(1/6)*24-(3/4)*24]/5*(-1)
=(5/2-9+4-18)/5*(-1)
=(5/2-23)/5*(-1)
=(1/2-23/5)*(-1)
=(0.5-4.6)*(-1)
=4.1
-1.5
(+2 3/4)+(-1 5/8)+(- 5/6)+3/8+(-4 2/3)等于多少?
1,2,3,4,5,6,8
1×2×3×4×5×6×8
24点:(9、2、2、1) ( 3、2、7、9 )(4、4、6、6 )(2、5、2、8)( 3、5、3、8)
()3( ) × ( )6 ------------- 1 ( )( ) 6( ) ( ) 5------------- 8 ( )( ) ( )()3( ) × ( )4 ------------- 2 ( )2 8( )1 ( ) 0------------- 3 ( ) 1 ( ) 8
2.75-[(-1/2)-(-5/6)+(-3/8)] +4又2/3=?
24点游戏(1)4,5,6,8;(2)3,1,8,6
-5+6-2+8-3+4-2+8-1
8/9-3/8+1/9 7/9-2/5-5/18 5/12+3/4+2/3 1/2+(2/3-1/4) 1-1/8-3/10 5/6-(1/2-1/3)计算要有过程
计算 2/5+5/8+3/5 6/7+7/9 1-4/9-1/6 8/9-(2/15+1/3) 4/3-(1/8+3/10)2/5+5/8+3/5 6/7+7/9 1-4/9-1/6 8/9-(2/15+1/3) 4/3-(1/8+3/10)
2/3,1,6/5,4/3,( ),3/2
4/5+(3/8-1/2)
算24.(1)1、5、5、5(2)1、4、5、6(3)3、3、8、8(4)2、6、9、9(5)5、5、7、11(6)1、3、5、7
(1+2+3+4+5+6+7+8+9)×(3+4+5+6+7+8+9+10+11)
2-1+2+6+5+8+4+3+4
{5/2-(3/8+1/6-3/4)×24}/5×(-1)
1/(1*3)+1/(2*4)+1/(3*5)+1/(4*6)+...+1/(8*10)=?
(1)5.57-[(-3/8)+(0.5)-(-5/6)+4又2/3]-1/8 (2)0.25+2(1)5.57-[(-3/8)+(0.5)-(-5/6)+4又2/3]-1/8(2)0.25+2又1/4+3.75-1又1/2-3又1/4(3)3又1/2-(-5又1/4)+(-3又1/3)-0.25+1/6(4)4.3+(-2又4/5)-(