(5/12+1/6-3/4)×(-24)
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(5/12+1/6-3/4)×(-24)
(5/12+1/6-3/4)×(-24)
(5/12+1/6-3/4)×(-24)
(5/12+1/6-3/4)×(-24)
=-5/12x24-1/6x24+3/4x24
=-10-4+18
=4
(5/12+1/6-3/4)×(-24)
(-5/12-1/24-5/6)*(24*5/9-24*2/9+24*2/3)
[25/24-(3/8+1/6-3/4)*(-24)]/(-5)
(1/3/12+2/6/24+3/9/36+4/12/48)/(2/3/5+4/6/10+6/9/15+8/12/20)=?
1/3/12+2/6/24+3/9/36+4/12/48 ___________________________ 2/3/5+4/6/10+6/9/15+8/12/20
(1/3/12+2/6/24+3/9/36+4/12/48)/(2/3/5+4/6/10+6/9/15+8/12/20)=?
简便计算:(1/6-1/12)×24-4/5
(7/12+1/4-5/6+1)*(-24)
1,2,3,4,5,6,8,12,24横竖斜积相等
算24点:(1)1 5 9 12 (2)1 6 10 13 (3)2 4 8 11(4)3 5 12 12
5,10,3,1组成24点3,1,4,10组成24点5,13,12,7组成24点2,4,9,8组成24点13,6,11,12组成24点
凑24点:1 3 3 7 凑24点:2 2 5 7 凑24点1 4 4 7还有1 2 8 3 5 5 5 5 7 11,2 6 6 12
-6x(1/12-5/3+5/24)=-1/2+10-5/4,这步运算运用了
简便计算24*(1/4 +6/5 -7/12)
4×(1/12+3/16)-3/4 7/5-5/8-9/16÷3/2 55×55/56 24×(1/4+1/6-1/3) 5/6×3/4+1/6÷4/3简便
(2/3-5/6-7/8+1/12)*(-24)=?
(12/7+3/8-5/6)/1/24
(3/8-5/6+11/12)÷1/24