Addition properties Quiz 1

Question 1

Write the given expression according to associative property $$2 + \left( {1 + 7} \right) = $$

Accepted Answer

$$\left( {2 + 1} \right) + 7$$

Answer

$$\left( {7 + 2} \right) + 1$$

Answer

$$\left( {2 + 7} \right) + 1$$

Answer

$$\left( {1 + 2} \right) + 7$$

Question 2

Simplify the expression $$2 	imes \left( {5 + 5} ight) = 2 	imes 5 + 2 	imes 5$$

Accepted Answer

$$20 = 20$$

Answer

$$20 = 15$$

Answer

$$18 = 18$$

Answer

$$12 = 20$$

Question 3

The value of $$x$$ in $$17\left( {x + 2} \right) = 80$$

Accepted Answer

$$\dfrac{{46}}{{17}}$$

Answer

$$\dfrac{{41}}{{15}}$$

Answer

$$\dfrac{{45}}{{17}}$$

Answer

$$\dfrac{{40}}{{15}}$$

Question 4

Solve the equation using Distributive property $$x - 5 = \dfrac{x}{5} + \dfrac{1}{{10}}$$

Accepted Answer

$$\dfrac{{51}}{8}$$

Answer

$$\dfrac{{51}}{2}$$

Answer

$$\dfrac{{50}}{8}$$

Answer

$$\dfrac{{50}}{2}$$

Question 5

The length of a square is $$3$$ more than the width of the square If the area of the square is $$18$$ square units, find the length and width of the square.

Accepted Answer

$$3,6$$

Answer

$$2, - 6$$

Answer

$$1, - 5$$

Answer

$$3, - 6$$