$$15+8=$$  

(a)  

$$13+9=$$  

(a)  

$$17+9=$$  

(a)  

$$19+9=$$  

(a)  

$$23+17=$$  

(a)  

$$26+19=$$  

(a)  

$$17+37=$$  

(a)  

$$36+28=$$  

(a)  

$$29+38=$$  

(a)  

$$17-8=$$  

(a)  

$$19-12=$$  

(a)  

$$15-12=$$  

(a)  

$$18-12=$$  

(a)  

$$23-17=$$  

(a)  

$$45-25=$$  

(a)  

$$32-27=$$  

(a)  

$$34-25=$$  

(a)  

$$41-37$$  

(a)  

$$43-27=$$  

(a)  

$$7\times8=$$  

(a)  

$$6\times6=$$  

(a)  

$$7\times4=$$  

(a)  

$$7\times9=$$  

(a)  

$$9\times8=$$  

(a)  

$$9\times5=$$  

(a)  

$$8\times8=$$  

(a)  

$$9\times6=$$  

(a)  

$$11\times5=$$  

(a)  

$$14\times5=$$  

(a)  

$$3\times12$$  

(a)  

$$16\times3=$$  

(a)  

$$4\times14=$$  

(a)  

$$7\times12=$$  

(a)  

$$15\times9=$$  

(a)  

$$16\div4=$$  

(a)  

$$12\div3=$$  

(a)  

$$18\div6=$$  

(a)  

$$24\div4=$$  

(a)  

$$32\div8=$$  

(a)  

$$48\div8=$$  

(a)  

$$42\div6=$$  

(a)  

$$81\div9=$$  

(a)  

$$72\div8=$$  

(a)  

$$48\div3=$$  

(a)  

$$80\div5=$$  

(a)  

$$96\div8=$$  

(a)  

$$84\div4=$$  

(a)  

$$88\div8=$$  

(a)  

$$121\div11=$$  

(a)