a)(+0.3)+(-6.4)÷8=?
b)[5.4÷(-1.8)+(0.6)]÷8=?
C) 1 × ( 1 )×( -12 )=?
9 -8 5
D) (-6)+4×(-3-9) × (── 1 )=?
6×(-3) 9
E) 4+ [ 2 － (-3 )]÷ 1 =?
5 5 10
更新1:
C) 1 × ( 1 )×( -12 )=? 9 - 8 5
