Question

4026-(648+2879)=

1. A.
   9
2. B.
   499
3. C.
   3013
4. D.
   7952

Answer 1

B
在一道算式中,有小括号,要先算小括号里面的.先算小括号里面的加法:648+2879=3527,再算小括号外面的减法:4026-3527=499,所以4026-(648+2879)=499,选B．