Associative Property of Addition

Q.

Fill in the blanks to make the statement true:$[13+(-12\left)\right]+(\_\_\_\_)=13+\left[\right(-12)+(-7\left)\right]$

Q. Which of the following example shows the associative property of addition?

1. $5+(2+6)=(5+2)+6$
2. $13+15=15+13$
3. $2\times (5+7)=2\times 5+2\times 7$
4. $2\times (3\times 4)=(2\times 3)\times 4$

Q. If a + (9 + 11) = 11 + (7 + 9), then the value of $a$ is equal to

Q.

Identify the incorrect statements.

$7+8\times 9=\left(7+8\right)+\left(7\times 9\right)$

Q.

$(18+9)+45=18+(\_\_\_\_\_\_+45)$

Q. Which property can be defined for the expression:
$9+(12+15)=12+(9+15)$

1. commutative property of addition
2. associative property of addition
3. commutative property of multiplication
4. associative property of multiplication

Q. What would $25+(60+30)$ be equal to?

1. 85 + 60
2. 85 + 30
3. 55 + 50
4. 40 + 60

Q. If $12+(8+11)=8+(p+q),$ then possible value(s) of $p,q$ is/are

1. $p=11,q=12$
2. $p=-11,q=-12$
3. $p=12,q=11$
4. $p=-12,q=-11$

Q. What would $25+(60+30)$ be equal to?

1. 85 + 60
2. 85 + 30
3. 55 + 50
4. 40 + 60