Question

Write as a mathematical expression. The product of 5 and x.Answer 5 + x

5 − x
5x
5/x

Question 2

Write as an algebraic expression: 22% of a.
Answer 0.22a
0.22 + a
0.22 / a
0.22 − a

Question 3

Write an algebraic expression for the word phrase: 8 more than the product of 6 and n.
Answer 6(8 + n)
8(6 + n)
8 + 6 + n
8 + 6n

Question 4

Evaluate: 30 − m/6 for m = 30.
Answer 25
0
6
1

Question 5

Evaluate ab + c for a= 2, b = 5, c = 4.

Answer 1

Write as a mathematical expression. The product of 5 and x.

5x


Write as an algebraic expression: 22% of a.

0.22a


Write an algebraic expression for the word phrase: 8 more than the product of 6 and n.

8 + 6n


Evaluate: 30 − m/6 for m = 30.

25


Evaluate ab + c for a= 2, b = 5, c = 4.

14

Answer 2

Question 1)

5x

Question 2)

0.22a

Question 3)

8 + 6n

Question 4)

25

Question 5)

ab+c=14

Explanation:

Ques 1)

The product of 5 and x.

Product of two numbers means that it is obtained by multiplying them.

Hence, the expression so obtained is: 5x

Ques 2)

22% of a

It means that:

22%×a

Also, we know that:

22% =0.22

This means that:

22% of a=0.22×a

i.e.

22% of a=0.22a

Ques 3)

8 more than the product of 6 and n.

The product of 6 and n is given by: 6n

and 8 more than there product will be given by:

8+6n

Ques 4)

Evaluate: 30 − m/6 for m = 30

i.e. we put m=30 in the expression and get the resulting value.

i.e. we have:

30-m/6=30-(30/6)

i.e.

30-m/6=30-5

i.e.

30-m/6=25

Ques 5)

Evaluate ab + c for a= 2, b = 5, c = 4.

i.e. we will put the value of a,b and c in the given expression and find the value.

i.e.

2×5+4= 10+4

i.e.

ab+c=14