Transcript Unit 1 Math Reviewx - Glen Rock Public Schools

Math Review
Unit 1
A principal needs 2 chaperones for every 25
students at the school dance. How many
chaperones are needed if 225 students are
expected to be at the dance?
18 Chaperones
It costs $18 for 3 bracelets, and $30 for 5 bracelets.
Are this ratios equivalent? Why or Why Not?
Yes! Because they both simplify to a 6:1 ratio.
Mrs. Carullo recorded 17 absences in her class
during the first 30 days of school. During the last 60
days of school, she recorded 42 absences. Are
these rates equivalent? Explain.
No, because the ratio 17:30 is not the same as the
ratio 42:60 which simplifies to 7:10 ratio.
Name one way you can find the LCM
Cake method or listing method
At a local fruit stand, Mia spends $3.96 for 2 pounds
of strawberries. How much can she expect to pay for
4 pounds of strawberries?
$7.92 for 4 pounds of strawberries.
Find the LCM of 42 and 7
42
Find the GCF of 36 and 24
12
Use a ratio table: Nick is having a pizza party. If two
large pizzas serve 9 people, how many pizzas
should he order to serve 27 guests?
6 Pizzas
What are the factors of 45?
1, 3, 5, 9, 15, 45
What is a Prime number?
A number that only has 2 FACTORS, 1 and itself.
Examples of prime numbers: 3, 7, 13, 17
Take the last few minutes of class to note which
problems you had trouble with and what you will do
to study these topics.