1.Which expression has the same value as the one below?

8 + [4 + (–9)]
A12 + (–9)
B–12 + 9
C–4 + (–9)
D4 + (–9)






2.What is the value of the expression?

-16+12
A-28
B-4
C4
D28








3Which expression has the same sum as the one below?

–15 + 6
A15 + 6
B–6 + (–15)
C15 + (–6)
D6 + (–15)