Transcript No Slide Title

Expressions
PEMDAS
Finding a
Rule
Problem
Solving
100
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400
Write the expression to represent
the phrase:
three times the amount
of books
3b, 3xb, 3*b
Nick must put a $20 deposit down to
buy a Kindle. If d represents the
amount of money needed for the Kindle,
what is the expression that tells how
much Nick needs to pay after
paying the deposit?
D - 20
Write an expression
that represents 7 less than
10 times a number.
10n - 7
What is the value of
24n – 23
when n = 4
73
What is the first step
in evaluating
the expression:
36 – [ 11 + (2 x 6)] + 12
Explain why.
2 x 6, would be first
because it is in parenthesis
and in the order of operations,
we need to complete operations
in parenthesis first.
Solve this expression
using the order of operations:
(9.8 + 3.4) x 3 - 1
38.6
Solve the expression
Using the order of operations:
6 + (13 – 1) / 4 + 2
11
Solve this expression using
the order of operations:
[ (5.5 + 2.3) – 2.1 ] + 2.3
8
What is the rule for the table?
X
Y
3
6
5
8
11
14
X+3
What is the rule for the table?
X
Y
2
12
12
72
20
120
X*6
What is the rule for the table?
What is the missing number?
X
Y
15
5
21
7
54
?
X / 3,
18
What is the rule for the table?
What is the missing number?
X
Y
3
24
7
56
11
?
X * 8,
88
Lisa studied for .5 hours
on Monday and 2 hours on
Tuesday. Given this pattern,
how many hours will
she study on Wednesday?
Pattern: + 1.5
She will study 3.5 hours
on Wednesday.
The expression s + 7 represents
the number of soccer games that
Jack has played in when Peter
has played in s games.
How many games will Jack have
played in when Peter has played
in 13?
Jack will have played in 20 games.
A group of students
collected blankets to donate. They
collected 36 blankets all together.
There were 12 cotton blankets.
There were 4 more fleece blankets
than wool blankets.
How many of each fabric quilt
are they donating?
They are donating 12 cotton blankets, 14 fleece
blankets, and 10 wool blankets.
The table shows the cost
for Liam to rent skiis:
Number of days
Total cost
2
$70
3
$105
4
$140
Explain how you would write
an expression that shows the cost
to rent the skiis for p days.
It costs $35 to rent the skiis
for one day.
To rent the skiis for p days
is 35 * p.
FINAL CHALLENGE
Create your own problem
from one of the topics,
then switch with a partner.
Think about what you still
need to practice
before your topic 8 test.
You can do it!