$0\ +\ 5=$  

(a)  

 $6\ -\ 0=$  

(a)  

 $7\ +2\ =$  

(a)  

 $4-2=$  

(a)  

 $8-8=$  

(a)  

 $9+5=$  

(a)  

 $14-7=$  

(a)  

 $21+7=$  

(a)  

 $14+6=$  

(a)  

 $56-5=$  

(a)  

(a)  

 $50-9=$  

(a)  

 $45+59$  

(a)  

 $305+97=$  

(a)  

 $80-29$  

(a)  

 $62-18=$  

(a)  

 $406-25=$  

(a)  

 $749+16+385=$  

(a)  

 $600-493=$  

(a)  

 $4+0.603+2.7=$  

(a)  

 $\frac{2}{9}+\frac{5}{9}=$  

(a)  

 $\text{}\text{}264.30-\text{}60.94$  

(a)  

 $\frac{1}{6}+\frac{5}{6}=$  

(a)  

 $\frac{7}{12}-\frac{1}{12}=$  

(a)  

 $14.3+5=$  

(a)  

 $35.7-2.063=$  

(a)  

 $\frac{11}{12}-\frac{2}{3}=$  

(a)  

 $\frac{7}{10}+\frac{3}{5}=$  

(a)  

 $\left(-4\right)+5+\left(-3\right)=$  

(a)  

 $\left(-6\right)\ -4=$  

(a)  

 $5\ \frac{1}{3}-\frac{1}{2}=$  

(a)  

 $\frac{7\times}{10}+\frac{4\times}{5}=$  

(a)  

 $\left(\times^2+2xy-5y^2\right)+\left(\times^2-5xy\right)$  

(a)  

 $\left(4x^3-2x^2+3xy\right)-\left(2x^3-5x^2+xy-y^2\right)$  

(a)