Fractions,Decimals & Percents
Convert .25 into a percent and a fraction
25/100 or 1/4
25%
What is a prime number?
what is a composite number?
Give example of each and state why they are in each category.
Prime: 2, 3, 5, 7, 11 only divided by one and itself
Composite: 4, 6, 8, 10 can be divided by more factors than one and itself
if there are 2 dogs for every 3 cats. Write the ratio of cats to dogs
3:2
Draw a quick coordinate graph with numbers up to 5 and -5. Label the quadrants
See teacher
what is an integer?
positive or negative whole number
Which big one would be used to solve for "?"
4/8 = ?/16
2/2
What are the factors of 40?
(What rectangles can you make with 40 pennies? )
1, 2, 4, 5, 8, 10, 20, 40
In a recipe for cookies, if there were 4 eggs for every 7 cups of water used and I have 12 eggs, how many cups on water will I need?
How many "batches" of cookies will I be able to make?
21 cups of water
This is 3 batches of cookies
What is the absolute value of -8?
What does absolute value mean?
8
Distable from zero
Use a number line or a T chart to calculate
-3 + 4
1
Convert 3/5 into a decimal and a percent
3/5 = 6/10 = .6 = 60%
What is the GCF and LCM of 42 and 28
LCM : 84
GCF : 14
If it cost $4 for every burger and you ordered 30 burgers, how much is the total?
**Use a ratio table to solve**
Burgers: Money
1 : $4
30 : $120
if two points were (2, 3) and (6, 3) what is their distance from each other?
8 units
Use a number line or a T chart to calculate
8 + -2 - 10
-2
Use a percent diagram to find 10% of 70
7
Factor using the GCF and the distributive property
20 + 50
10(2 + 5)
10(2) + 10(5)
GCF is 10
If it cost $14 for 7 sodas, and you ordered 50 sodas, how much is the order?
7 : $14
1 : $2
50 : $100
Plot the points (-7, 11) and (3, 11)
Use absolute value to calculate their distance
7 + 3 = 10
Use a T chart to solve:
-3 + -4 + 8 - 9
-3 8
-4
-9
Total -16 and 8
subtract take the sign of the larger number
= -8
Use a percent ruler/diagram to find 30% of 400
10% = 40
30% = 120
Draw a rectangle: label the width 7 cm and the length 8 cm. What is the area and perimeter?
What happens to the area and perimeter when each side length is doubled? Give your work as an example.
area: 56 sq. cm
Perimeter 30 cm
if side lengths are doubled the area becomes 224 sq cm which is 4 times larger. The perimeter doubles and becomes 60 cm.
Use a ratio table to solve: Challenge !!
If you mixed 6 lemons in with 2 cups of water to make 2.5 cups of lemonade. How many lemons would you need to make 10 cups of lemonade?
Lemons: Water : Lemonade
6 : 2 : 2.5
12 : 4 : 5
24 : 8 : 10
On your coordinate plane plot A(-5, 6) connect it to B(2, 6) C(2, -3) and D(-5, -3)
What's the perimeter and area if each map unit was one foot? And what if each map unit was 3 feet? How does the area and perimeter change?
P = 9(2) + 7(2) = 32 units
A = 9 * 7 = 63 sq units
Given 2 feet per map unit
P = 18(2) + 14 (2) = 64 units
A = 18 * 14 = 252 sq units
The perimeter doubled and the area quadrupled
Write a numerical expression for the following and solve
I had 12 dollars, I charged 25 on my credit card and then I was given 24 dollars for babysitting for 3 hours. How much money do I have?
Show your work using a T chart for credit
12 - 25 + 24 = $11