8-2+40=
[ ]
A.0
B.46
C.60
D.76
70-30-40=
10+20+30=
20+70-30=
A.50
B.80
D.90
70-50+60=
A.60
C.20
80-10-40=
B.90
C.30
D.80
30+40+20=
A.30
C.50
D.60
80-30-50=
A.100
C.0
40+20+30=
C.9
“6角○7角”,比较大小 ,在○里应填的符号是
A.>
B.<
C.=