Expressions PEMDAS Finding a Rule Problem Solving 100 100 100 100 200 200 200 200 300 300 300 300 400 400 400 400

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

that represents 7 less than 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.

because it is in parenthesis and in the order of operations, 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.

using the order of operations: Solve this expression using the order of operations: (9.8 + 3.4) x 3 - 1

38.6

Using the order of operations: 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 5 8 11 14

X + 4

What is the rule for the table? X Y 2 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 16 7 56 11 ?

X * 8, 88

Tuesday. Given this pattern, 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.

collected blankets to donate. They collected 36 blankets all together. 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: Explain how you would write an expression that shows the cost to rent the skiis for p days. Number of days Total cost 2 $70 3 $105 4 $140

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 then switch with a partner. 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!