7th Grade Math Newsletter
Chapter 6 Percents
Today’s
Headlines:
Ch 6
Summary
Have you ever noticed how
often we use percents in our everyday
lives? They are all around us so it is
important for kids to learn how to
work with them.
Math Access
Online
In section 6-1 the students
reviewed how to change among three
forms of numbers: fractions, decimals
and percents. Some are very common
and they know them from memory,
such as 25% = 0.25 = ¼. Others need
16
more thought and work such as 16% = 0.16 = 100 =
4
25
.
Think of any fraction, decimal or percent and your child
should be able to tell you the other forms.
When you tip at a restaurant, do you leave
exactly 15% or do you estimate? Most of us estimate
for many real life situations. Section 6-2 was all about
estimating percents. We talked about using compatible
numbers to be able to estimate in our heads. We also
talked about the quickest way to find 10% of a value.
See if your child can explain the 10% shortcut method.
Reminder: Students can access the book,
quizzes and other materials online at
my.hrw.com
Sample username: 17 MichaelN2689
Password: Pipestone
This newsletter is worth extra credit if you sign
below and have your son or daughter bring it back on
test day. Please contact me if you have any questions
or concerns. Here is my email:
[email protected]
Student Signature: ____________________________
Parent Signature: ______________________________
In section 6-3 through 6-6, the students worked
with percents in a variety of situations including
increase, decrease, commission, and sales tax. They
found that they could either translate the problems into
equations or proportions to solve them.
Section 6-7 dealt with simple interest. The kids
always have lots of banking questions when we talk
about interest! Some I can answer and some I can’t.
After learning the simple interest formula, I = Prt, the
kids can calculate the interest they will earn on their
savings accounts or the interest they would have to pay
on a loan.
Chapter 6 Test Date: _____________________
7th Grade Math Newsletter
Chapter 6 Percents
Earn more Extra Credit by completing these
review questions.
1. Which is larger 89/100 or 20%? Explain or show
work to prove.
6. To study, I went online and completed the
Interactive Practice Quizzes for the checked lessons.
_____ 6-1 Relating Decimals, Fractions and Percents
_____6-2 Estimating Percents
2. Luke started his company with 15 employees. Now
he has 22 employees. Show the work to prove that this
is a 46.7% increase.
_____ 6-3 Finding Percents
_____6-4 Finding a Number When the Percent if
Known
_____ 6-5 Percent Increase and Decrease
_____6-6 Applications of Percents
_____ 6-7 Simple Interest
3. How do you change a fraction into a percent?
Signature of Adult Witness
___________________________________________
4. A shirt is on sale for 30% off. The original price is
$25.99. Show the work to prove that the sale price is
$18.19.
Chapter 6 Test Date: _____________________