A.2109;B.1289;C.322;D.147
[单选题]:1,2,3,7,46,( )。A.2109 B.1289 C.322 D.147
[单选题]:1, 2, 3, 7, 46, ( )。A.2109B.1289C.322D.147
[单选题]34 1 , 2 , 3 , 7 , 46 ,()A. 2109B 1289C 322D 147
[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
[单选题]1, 2, 3,8, 21,46, ( )。A.70B.87C.90D.100
[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) (-3)-(-7);(2)(-10)-3;(3)33-(-27);(4)0 -12;(5)(-11)-0;(6)(-4)-16。