(1) (-3)-(-7); (2)(-10)-3;
(3)33-(-27); (4)0 -12;
(5)(-11)-0; (6)(-4)-16。
[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]计算:(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]计算:(2£«4£«6£«8£«…£«2010)£(1£«3£«5£«7£«…£«2009)2().A.995B.1011C.1111D.1005
[主观题]计算。4/3-(2/5+3/10)5/7+1/4-9/143/4+3/6-5/8
[单选题]计算:(2+4+6+8+…+2010)一(1+3+5+7+…+2009)=( )。A.995B.1011C.1111D.1005
[主观题]计算:(1)7+(-2)-3.4;(2)(-21.6)+3-7.4+(-2/5)(3)31+(-5/4)+0.25(4)7-(-1/2)+1.5(5)49-(-20.6)-3/5(6)(-6/5)-7-(-3.2)+(-1)
[单选题]2/3, 1/2, 2/5, 1/3, 9/7,( ).A.1/4B.1/6C.2/11D.2/9
[试题]2/3,1/2,3/7,7/18,()A.5/9;B.4/11;C.3/13;D.2/5
[单选题]2/3,1/2,3/7,7/18,()A .4/11B .5/12C .7/15D .3/16
[主观题]填空。1/3+7/13=()5/7-2/7=()()-1/12=11/127/5-()=3/5