Scroll:Algebra >> Evaluate variable expressions >> saq (3760)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.


 

1)  

 Find the value of the expression

3 × W

for W = 20.


Answer:_______________




2)  

Which number comes just after 12


Answer:_______________




3)  

 Find the value of the expression

6 -  N

for N = 2.


Answer:_______________




4)  

Find the value of the expression

48 ÷ R

for R = 8.

.


Answer:_______________




5)  

 Find the value of the expression

U + 7

for U = 11


Answer:_______________




6)  

 Find the value of the expression

3 × I

for I = 20.


Answer:_______________




7)  

Which number comes just after 18


Answer:_______________




8)  

 Find the value of the expression

8 -  B

for B = 2.


Answer:_______________




9)  

Find the value of the expression

9 ÷ M

for M = 9.

.


Answer:_______________




10)  

 Find the value of the expression

L + 8

for L = 20


Answer:_______________




 

1)  

 Find the value of the expression

3 × F

for F = 20.

Answer: 60


SOLUTION 1 :

Renemeber:

A variable is a letter that represents an unknown number.
An expression is a group of numbers, symbols, and variables that represents another number.

Solve:

Replace the variable F with the number 20

3 × F

3 × 20

Now simplify:

3 × 20 = 60
 

 



2)  

Which number comes just after 12

Answer: 13



3)  

 Find the value of the expression

6 -  C

for C = 2.

Answer: 4


SOLUTION 1 :

Renemeber:

A variable is a letter that represents an unknown number.
An expression is a group of numbers, symbols, and variables that represents another number.

Solve:

Replace the variable C with the number 2

2 -  C

6 -  2

Now simplify:

6 -  2 = 4
 

 



4)  

Find the value of the expression

48 ÷ A

for A = 8.

Answer: 6.


SOLUTION 1 :

Remember:

A variable is a letter that represents an unknown number.
An expression is a group of numbers, symbols, and variables that represents another number.

Solve:

Replace the variable A with the number 8.

48 ÷ A

48 ÷ 8

Now simplify:

48 ÷ 8 = 6
 



5)  

 Find the value of the expression

I + 7

for I = 11

Answer: 18


SOLUTION 1 :

Remember:

A variable is a letter that represents an unknown number.
An expression is a group of numbers, symbols, and variables that represents another number.

Solve:

Replace the variable I with the number 7.

I + 11

7 + 11


Now simplify:

7 + 11 = 18
 



6)  

 Find the value of the expression

3 × F

for F = 20.

Answer: 60


SOLUTION 1 :

Renemeber:

A variable is a letter that represents an unknown number.
An expression is a group of numbers, symbols, and variables that represents another number.

Solve:

Replace the variable F with the number 20

3 × F

3 × 20

Now simplify:

3 × 20 = 60
 

 



7)  

Which number comes just after 18

Answer: 19



8)  

 Find the value of the expression

8 -  G

for G = 2.

Answer: 6


SOLUTION 1 :

Renemeber:

A variable is a letter that represents an unknown number.
An expression is a group of numbers, symbols, and variables that represents another number.

Solve:

Replace the variable G with the number 2

2 -  G

8 -  2

Now simplify:

8 -  2 = 6
 

 



9)  

Find the value of the expression

9 ÷ Y

for Y = 9.

Answer: 1.


SOLUTION 1 :

Remember:

A variable is a letter that represents an unknown number.
An expression is a group of numbers, symbols, and variables that represents another number.

Solve:

Replace the variable Y with the number 9.

9 ÷ Y

9 ÷ 9

Now simplify:

9 ÷ 9 = 1
 



10)  

 Find the value of the expression

M + 8

for M = 20

Answer: 28


SOLUTION 1 :

Remember:

A variable is a letter that represents an unknown number.
An expression is a group of numbers, symbols, and variables that represents another number.

Solve:

Replace the variable M with the number 8.

M + 20

8 + 20


Now simplify:

8 + 20 = 28