A.计算A1+B4
B.计算A1+A2+A3+A4+B1+B2+B3+B4
C.按行计算A列与B列之和
D.按列计算1、2、3、4行之和
A.SUM(B2:B6)
B.SUM(B2:B7)
C.SUM(D2:D7)
D.SUM(E2:E7)
A. =SUM(A1:$A$10)
B. =SUM(A2:$A$10)
C. =SUM(A1:$A$11)
D. =SUM(A2:$A$11)
A.=AVERAGE(A1:A2:A3)
B.=SUM(A1:A3)/3
C.=AVERAGE(A1:A3)
D.=(A1+A2+A3)/3