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Australia
Year 7

6.02 Building algebraic expressions

Worksheet
Pronumerals, coefficients and algebraic expressions
1

For each of the following terms, choose the correct definition from the options below:

a

Pronumeral

b

Coefficient

c

Expression

A

A numeral that is placed before and multiplies a pronumeral in an algebraic term

B

A way to express a mathematical value that involves pronumerals

C

A symbol, commonly a letter, that is used in the place of a numeric value

2

State the coefficient in the following terms:

a

4 x

b

- 4 y

c

6 y

d

- 6 y

e

0.5 m

f

8ab

g

9z

h

-101pqr

i

\dfrac{4h}{3}

j

-i

k

\dfrac{-f}{5}

l

\pi r

3

State the constant term in the following expressions:

a

u + 11

b

a - 11

c

3 n

d

5 x + 8

e

8 y - 3

f

\dfrac{p}{6} - 7

g

10a - 12b + 7c -2

h

3xy+5+4y-x

i

14-20ab+4a

j

15v +8y+2uv- 30

4

State the number of terms in the following expressions:

a

-2x

b

7y + 1

c

1024

d

ab + 18

e

\dfrac{j}{2} + k

f

\dfrac{m}{5} + \dfrac{n}{3} + 21

g

8xy+4 - 12y

h

5x - 7y + 8xyz - 12

Basic operations in algebra
5

For each of the following terms, choose the correct definition from the options below:

a

Sum

b

Product

c

Difference

d

Quotient

e

Factor

f

Term

A

The result of multiplying two or more values or algebraic expressions.

B

The result of dividing a value or algebraic expression by another.

C

A single component of a product.

D

The result of adding two or more values or algebraic expressions.

E

A single component of a sum or subtraction.

F

The result of subtracting a value or algebraic expression from another.

6

Write an algebraic expression for each of the following statements:

a

Seven multiplied by x

b

Eight more than 5 x

c

Three less than 8 y

d

The product of 9 u and 8

e

The quotient of 8 u and 9

f

Four times y take away 9

g

8 more than the quotient of 9 and x

h

The difference of a and b, divided by 6

7

Write an algebraic expression for each of the following statements:

a

Five times the sum of x and ten

b

Three groups of the sum of a and b

c

Seven groups of the difference between n and 8, then increased by 4

d

Eleven more than the product of 4 and the difference between m and 9

8

Write a word statement for each of the following expressions:

a
8x
b
p + 7
c
x - 6
d
\dfrac{p}{8}
e
b - 12
f
15 m
g
\dfrac{u}{15}
h
\dfrac{b+9}{2}
i
9 y - 3
j
\dfrac{y}{3} + 5
k
12 - 3k
l
\dfrac{m+n}{d}
9

Write a word statement for each of the following expressions:

a
2 \left(b + 9\right)
b
x \left(3 - y\right)
c
4\left(n+1\right) - 11
d
6 \left(m + 7\right) + 10
10

For each of the following expressions:

i

State the order in which the operations should be performed.

ii

Hence, simplify the expression.

a
3 \times u \div v + 8
b
5+ y \times x - 4
c
(4-k)\div 5
d
7-12 \div (3\times a)
e
8 + 3 \times 3 \div m
f
\left(n + 3 - 2\right) \div 7
g
\left( 15 - 3 \right) \times \left(m + 1 \right)
h
\left( 3 \times p + 5 - 4\right) \div 6
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ACMNA175

Introduce the concept of variables as a way of representing numbers using letters

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