Math Quiz 4

Answer: 

31

Math Quiz 3

Answer: 

10+10-10*10 

= (10+10)-(10*10)

 
= 20-100 

=-80

Math Quiz 2

Answer:

7 + 3 = 410

Math Quiz 1

Answer:

It's 6 

8 x 8 = 64 – 8 = 56 
7 x 7 = 49 – 7 = 42 
6 x 6 = 36 – 6 = 30 
5 x 5 = 25 – 5 =20 
3 x 3 =9 – 3 = 6

9 = 72 ( 9 x 8 = 72 ) 
8 = 56 ( 8 x 7 = 56 ) 
7 = 42 ( 7 x 6 = 42 ) 
6 = 30 ( 6 x 5 = 30 ) 
5 = 20 ( 5 x 4 = 20 ) 
4 = 12 ( 4 x 3 = 12 ) 
3 = 6 ( 3 x 2 = 6 ) 
2 = 1 ( 2 x 1 = 2)