(1)27-18+(-7)-32
(2)1/3+(-1/5)-1+2/3
(3)0.5+(-1/4)-(-2.75)+1/2 (4)(-2/3)+(-1/6)-(-1/4)-1/2
[单选题]-27,-7,1,3,5,13,( )A.33B.31C.27D.25
[主观题]计算。7/8-5/6=2/9+1/2=6/7-2/3=3/10+1/4=3/7+1/9=1/3-1/5=1/6+1/4=5/7-1/5=
[试题]1/9,2/27,1/27,()A,4/27;B,7/9;C,5/18;D,4/243;
[单选题]2/3, 1/2, 2/5, 1/3, 9/7,( ).A.1/4B.1/6C.2/11D.2/9
[单选题]1/2,1,7/8 ,5/8 ,13/32 ,( )A. 1/4B. 15/64C. 11/64D. 7/64
[单选题]:1,1,2,3,5,7,( ),( )A.14,17B.13,15C.12,15D.14,16
[单选题]1,1,2,3,5,7,( ),( )。A.14,17B.13,15C.12,15D.14,16
[单选题]1,1,2,3,3,5,5,7,8,(),()A.10,12B.11,14C.9,13D.8,15
[主观题]2/3,1/2,3/7,7/18,()A、4/11;B、5/12;C、7/15;D、3/16
[主观题]-1/2,1/2,-3/8,1/4,-5/32,()A..1/16B..3/32C..-1/36D..-1/64