7+2

(a)  

10+3

(a)  

7+5

(a)  

8+7

(a)  

9+2

(a)  

8+6

(a)  

10+5

(a)  

1+15

(a)  

14+1

(a)  

2+6

(a)  

8+8

(a)  

10-6

(a)  

-9-3

(a)  

5-8

(a)  

-8-6

(a)  

4+3

(a)  

-8+3

(a)  

8-3

(a)  

-7-3

(a)  

4-2

(a)  

-9+2

(a)  

-7+3

(a)  

-5-5

(a)  

(4)(3)

(a)  

(-4)(8)

(a)  

(-7)(3)

(a)  

(-4)(2)

(a)  

(-5)(-3)

(a)  

(9)(-6)

(a)  

(9)(6)

(a)  

(-8)(7)

(a)  

(7)(-4)

(a)  

(6)(5)

(a)  

(-7)(-6)

(a)  

(-9)(-9)

(a)  

16/4

(a)  

35/-5

(a)  

42/7

(a)  

-10/2

(a)  

-63/-9

(a)  

54/-9

(a)  

36/-4

(a)  

-81/-9

(a)  

56/-8

(a)  

48/-6

(a)  

49/7

(a)  

25/5

(a)  

 $\sqrt{25}$  

(a)  

 $\sqrt{49}$  

(a)  

 $\sqrt{81}$  

(a)  

 $\sqrt{100}$  

(a)  

 $\sqrt{144}$  

(a)  

 $\sqrt{1}$  

(a)  

 $\sqrt{36}$  

(a)  

 $\sqrt{4}$  

(a)  

 $\sqrt{9}$  

(a)  

 $\sqrt{121}$  

(a)  

 $\sqrt{64}$  

(a)  

 $\sqrt{400}$  

(a)  

 $2^2$  

(a)  

 $6^2$  

(a)  

 $8^2$  

(a)  

 $7^2$  

(a)  

 $9^2$  

(a)  

 $11^2$  

(a)  

 $15^2$  

(a)  

 $5^2$  

(a)  

 $4^2$  

(a)  

 $1^2$  

(a)  

 $3^2$  

(a)  

 $5^2$  

(a)