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4.01 Representing algebraic expressions

Worksheet
Algebraic expressions
1

State the definition of a variable.

2

Consider the expression 8 x.

a

Identify the numerical part of the expression.

b

What is the numerical part of the term called?

3

What does the expression 4 x mean?

4

Identify the constant term and variable term in the expression 9 x + 8.

5

Write the expression 7 \times u in simplest form.

6

Write a single term that represents the expression v + v + v + v.

Pictures and algebraic expressions
7

Using the given key, write an algebraic expression to represent the total number of oranges in each of the following diagrams:

a
b
c
d
8

Using the given key, write an algebraic expression to represent the total number of apples in each of the following diagrams:

a
b
c
d
9

Xanthe is selling some oranges in boxes and some oranges individually. The key is provided to show how many oranges each box represents:

Write an algebraic expression to represent the total number of oranges Xanthe is selling in the following diagram:

Statements and algebraic expressions
10

The expression a \times 2 represents the number of competitions Christa is expected to win in 2 months if she wins an average of a competitions a month.

State the type of expression represented by a \times 2.

11

The expression \dfrac{a}{5} represents the average number of LCD monitors in each room of a particular office.

a

State the type of expression represented by \dfrac{a}{5}.

b

How many terms does the expression have?

12

The expression 11 a represents the total number of candies in a packets if each packet contains 11 candies.

a

State the type of expression represented by 11 a.

b

What are the factors in the expression?

13

For each of the following:

i

Find the type of expression represented.

ii

Find the number of terms the expression has.

iii

Identify the constant term.

a

The expression 9 + n represents 9 more than the number of points, n, scored by the opposition team in a basketball game.

b

The expression a - 1 represents one less than the number of points, a, scored by the home team in a basketball game.

c

The expression \dfrac{m}{5} represents the number of chocolates, m, shared evenly by 5 children.

d

The expression 2r represents twice the number of chocolates, r, distributed to the children.

14

The expression \dfrac{x}{5} represents the average earnings of a family of five when they make a combined total of \$x in a year.

a

What type of expression does \dfrac{x}{5} represent?

b

Determine whether each of the following expressions is equivalent to \dfrac{x}{5}:

i

\dfrac{5}{x}

ii

\dfrac{1}{5} \times x

iii

\dfrac{1}{5 \times x}

iv

\dfrac{1}{x} \times 5

15

Write an algebraic expression for each of the following statements:

a

7 multiplied by x

b

8 more than 5 x

c

3 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

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Outcomes

MA.6.AR.1.1

Given a mathematical or real-world context, translate written descriptions into algebraic expressions and translate algebraic expressions into written descriptions.

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