$$-10+12\ =\$$  

(a)  

$$-18-(-15)=$$  

(a)  

$$30+(-15)=$$  

(a)  

$$56-(-8)=$$  

(a)  

$$26+(-9)=$$  

(a)  

$$6-7+(-3)=$$  

(a)  

$$(-9)-(-7)+4=$$  

(a)  

$$3+4+(-13)=$$  

(a)  

$$17-(-5)+12=$$  

(a)  

$$(-29)-21+36=$$  

(a)  

$$-120+-154=$$  

(a)  

$$5329+1315-3917=$$  

(a)  

$$(-7)\times(-4)=$$  

(a)  

$$9\times(-7)=$$  

(a)  

$$(-11)\times3=$$  

(a)  

$$12\times(-4)=$$  

(a)  

$$(-15)\times(-4)=$$  

(a)  

$$(-20)\div(-5)=$$  

(a)  

$$(-40)\div(-8)=$$  

(a)  

$$60\div(-4)=$$  

(a)  

$$(-48)\div(3)=$$  

(a)  

$$169\div(-13)=$$  

(a)  

$$(-42)+72\div(-8)-(-14)=$$  

(a)  

$$-12\times(18+(-27))=$$  

(a)