Quiz about Expression and Equations

Question 1

What is a variable ?

Accepted Answer

A symbol, usually a letter, that can represents different values

Answer

Replace part of an expression, usually a letter, with a another value, usually a number

Answer

The number in front of a variable in algebraic expression or equation

Answer

A number on its own with no variable

Question 2

Expanding brackets: 4(n-5)

Accepted Answer

4n-20

Answer

4n-5

Answer

4n+20

Answer

4n+5

Question 3

find x: 4x + 10 = 30

Accepted Answer

x=5

Answer

x=6

Answer

x=4

Answer

x=-5

Question 4

Find n: 6n = 30

Accepted Answer

n=5

Answer

n=10

Answer

n=-5

Answer

n=-10

Question 5

Work out the value of the expression:

2a + 3 when a = 8

Accepted Answer

19

Answer

20

Answer

13

Answer

30

Question 6

Work out the value of the expression: $$\frac{b}{3}-5$$ when b=27

Accepted Answer

4

Answer

7

Answer

5

Answer

0

Question 7

Loli lives with three friends. They share the gas bill equally between the four of them. Write a formula to work out the amount they each pay in letters. (Let t represent the total bill)

Accepted Answer

$$\frac{t}{4}$$

Answer

4t

Answer

t-4

Answer

t+4

Question 8

Simplify the expression: $$9x^2\ -\ x^2$$

Accepted Answer

Answer

80x

Answer

Answer

none

Question 9

Simplify the expression: 3xy+5yz-2xy+3zy

Accepted Answer

xy + 8yz

Answer

yx + 2yz

Answer

12 xyz

Answer

None

Question 10

Expand the brackets. $$3\left(7\ -\ 4v\ +6w\right)$$

Accepted Answer

21 - 12v + 18w

Answer

27w

Answer

27v

Answer

21 + 12v + 18w

Question 11

Write an equation for the given statement.

"I think of a number and add 3. The answer is 22."

Accepted Answer

n + 3 = 22

Answer

3n = 22

Answer

$$\frac{n}{3\ }-22$$

Answer

n - 3 =22

Question 12

Write an equation for the given statement.

"I think of a number. I multiply it by 2 then add 4. The answer is 28."

Accepted Answer

2n + 4 = 28

Answer

4n + 2 = 28

Answer

4n - 2 =28

Answer

$$\frac{2n}{4}=28$$

Question 13

Write down the inequality shown on this number line. ( use variable x for the values of x)

Accepted Answer

Answer

x > 5

Answer

Answer

$$x\ \ge5$$

Question 14

Write down the inequality shown on this number line. ( use variable x for the values of x)

Accepted Answer

Answer

Answer

x = 0

Answer

None

Question 15

you must be at least 48 inches to ride the roller coaster.

Accepted Answer

$$x\ \ge48$$

Answer

x > 48

Answer

x < 48

Answer

Question 16

You spent less than 5 hours on homework each night.

Accepted Answer

Answer

Answer

$$h\ \le5$$

Answer

Question 17

Write the expression of x more than three times y

Accepted Answer

x + 3y

Answer

x + y +3

Answer

3x + y

Answer

None

Question 18

Multiply x by 5 and subtracts 5

Accepted Answer

5x - 5

Answer

5 - 5x

Answer

x - 5

Answer

None

Question 19

$$\frac{24}{k\ }-\ 3$$ when k = 8

Accepted Answer

0

Answer

1

Answer

-0

Answer

None

Question 20

Use formula A = $$\frac{1}{2}$$ bh , where b=4 and h = 5

Accepted Answer

10

Answer

20

Answer

5

Answer

1

Question 21

for the inequality $$k<12$$ , the largest integer that k could be is:

Accepted Answer

11

Answer

12

Answer

13

Answer

14

Question 22

Teacher Nisrin looks the inequality $$z\ >-5.\ $$

Teacher list the numbers as -4 , -3, -2, -1, 0, 1, .........

Is she correct?

Accepted Answer

Yes

Answer

No

Answer

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