Sample quiz on addition and subtraction of integers
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1. When two positive integers are added, the resulting integer is $\cdots$
   
   A: positive
   B: negative
   C: zero
   D: sometimes negative and sometimes positive
   
2. When two negative integers are added, the resulting integer is $\cdots$
   
   A: zero
   B: positive
   C: negative
   D: sometimes negative and sometimes positive
3. When a positive integer and a negative integer are added, the resulting integer is $\cdots$
   
   A: zero
   B: positive
   C: negative
   D: sometimes negative and sometimes positive
4. If $a$ is an integer, what is the value of $-a+a$?
   
   A: $0$
   B: $2a$
   C: $-2a$
   D: $-a^2$
5. What is the value of $-2+5$?
   
   A: $-7$
   B: $-3$
   C: $3$
   D: $7$
6. What is the value of $-2+(-6)$?
   
   A: $-4$
   B: $-8$
   C: $+8$
   D: $+4$
7. What is the value of $8-(-5)+(-13)$?
   
   A: $26$
   B: $10$
   C: $0$
   D: $-26$
8. What is the value of $-22+52-32$?
   
   A: $-3$
   B: $-2$
   C: $62$
   D: $42$
9. What is the value of $12+5-(-8)+(-16)$?
   
   A: $9$
   B: $-7$
   C: $-9$
   D: $25$
10. What is the value of $-20-20+400$?
    
    A: $0$
    B: $-360$
    C: $-440$
    D: $+360$