Expressions
What does this really mean?
5p
5 x p
(Five times p)
If Torie makes an average of 36 paper swans per hour for 4 hours, she will make 4 × 36 paper swans. Which of the following is equal to 4 × 36?
A) (4 × 30) + (4 × 6)
B) (4 + 30) × (4 + 6)
C) (4 + 30) + (4 + 6)
D) (4 × 30) − (4 × 6)
A
Evaluate the expression
15 - n
when n = 9
6
What is the Rule?
A 48 56 64 72
? 6 7 8 9
a / 8
What is the Rule?
x 40 35 30 25
y 63 58 53 48
y is always 23 times greater than x
y = x + 23
What is an expression for
"2 more than 4 times a
number"
4n + 2
What is the first step in evaluating the expression shown below?
8 + (15 − 4) × 11 − 10 ÷ 5
Subtract 15 - 4
Evaluate the expression
6 + 8 - x
when x = 3
11
Evaluate:
48 / n
when n = 8
6
Look at the chart and answer the question
Seconds 1 2 3 4
Beats 14 28 42 56
How many beats will it have for 5 seconds?
70
What is an expression for
"5 less than 4 times a
number"
4x - 5
What value of n makes the equation true? 2
4 × 480 = (24 × 400) + (24 × n)
A) 2
B) 80
C) 456
D) 480
B
The expression j − 5 represents the number of years Julio has taken painting classes when Keri has taken sculpting classes for j years. How many years of classes will Julio have when Keri has 12 years?
7
Evaluate (2 x n + 2) / 2
When n = 7
8
Rule A: Start with 100 and subtract 3
Rule B: Start with 150 and subtract 3
What is the relationship between Rule A and Rule B?
(hint: Rule B is always......... than Rule A)
Rule B is always 50 greater than Rule A
Jake cleaned up his room. He organised his toys into boxes. He put 7 toys in each of 3 bins. If t represents the total number of toys, what is an expression that shows the total number of toys he put away?
t = 7 x 3
What is the value of
15 − 2x + 2
when x = 6?
5
Evaluate:
x + x + x + 6 + x + 4 + x + 9 + x
when x = 6
55
What is the Rule?
D 30 25 15 5
? 6 5 3 1
D / 5
Tom starts with $12 and saves
$20 each week.
Ruth starts with
$15 and saves $20 each week.
What is the relationship between
how much money each has at the
end of each week?
Ruth always has 3 more dollars than Tom
Tell me this expression in word form: 4(5 + n)
Four times the total of 5 and a number.
Answer this problem.
5(4 + 3) + 5 x 3
50
What is the RULE of this table?
R 19 24 32 37
? 7 12 20 25
r - 12
Sarah, Geeta, and Tahlia have a total of $40 between them.
Tahlia has $13 and Sarah has 2 times as much as Geeta.
Write an equation to show how much money Geeta has.
(40 − 13) ÷ 3 = G
Darren is watching a circus act. He notices that there is a relationship between the number of horses and the number of dogs in the act. He makes the table below to collect his observations.
What is the missing value?
Horses 1 2 3 4... 9
Dogs. 4 8 16 20... ?
36