Answer:
The answers are as follows:
5. ![12+3 = 3+12](https://tex.z-dn.net/?f=12%2B3%20%3D%203%2B12)
7. ![(6+4)+8 = 6+(4+8)](https://tex.z-dn.net/?f=%286%2B4%29%2B8%20%3D%206%2B%284%2B8%29)
9. ![(10*5)*7 = 10*(5*7)](https://tex.z-dn.net/?f=%2810%2A5%29%2A7%20%3D%2010%2A%285%2A7%29)
Step-by-step explanation:
<u>5. 12 and 3</u>
Commutative property of addition states that the order of two numbers in addition doesn't matter; the result will be the same. If a and b are two numbers then the property will be:
a+b = b+a
For the given question, the commutative property will be:
![12+3 = 3+12](https://tex.z-dn.net/?f=12%2B3%20%3D%203%2B12)
Associative property deals with three numbers or variables. It states that when 3 numbers are being added or multiplied their order doesn't affect the result.
It can be stated as:
(a+b)+c = a+(b+c)
<u>7. 6,4 and 8</u>
The associative property will be:
![(6+4)+8 = 6+(4+8)](https://tex.z-dn.net/?f=%286%2B4%29%2B8%20%3D%206%2B%284%2B8%29)
<u>9. 10,5 and 7</u>
![(10*5)*7 = 10*(5*7)](https://tex.z-dn.net/?f=%2810%2A5%29%2A7%20%3D%2010%2A%285%2A7%29)
Hence,
The answers are as follows:
5. ![12+3 = 3+12](https://tex.z-dn.net/?f=12%2B3%20%3D%203%2B12)
7. ![(6+4)+8 = 6+(4+8)](https://tex.z-dn.net/?f=%286%2B4%29%2B8%20%3D%206%2B%284%2B8%29)
9. ![(10*5)*7 = 10*(5*7)](https://tex.z-dn.net/?f=%2810%2A5%29%2A7%20%3D%2010%2A%285%2A7%29)