-10-10

(a)  

9+(-8)-9

(a)  

-(-6)+7

(a)  

-(-8)+(-8)

(a)  

20+(-10)-5

(a)  

-7+7-7

(a)  

-11+9-(-2)

(a)  

-(-12)-9

(a)  

2+(-6)-5

(a)  

-(-15)-(-10)

(a)  

 $-7+2\times3$  

(a)  

 $-2+8\div2$  

(a)  

 $6\times4\div2-6$  

(a)  

 $-8\div2\times0-2$  

(a)  

 $\left(-3\ +\left(-1\right)\right)\ \times3$  

(a)  

9+10-(-5)

(a)  

22-(-12)+(-2)

(a)  

-2(-5) + (-15)

(a)  

3(-4)+14

(a)  

 $\left(-18\right)-12\times\left(-2\right)$  

(a)  

 $14\div7\times\left(-1\right)$  

(a)  

199-(-96)

(a)  

-109-99

(a)  

 $35\times\left(-4\right)$  

(a)  

 $-11\times63$  

(a)  

 $-2\left(10\right)\times\left(-10\right)$  

(a)  

 $\left(-3\right)\times3\times\left(-3\right)$  

(a)  

 $-12\times99$  

(a)  

0-15-15

(a)