Mrs. Williams 7 th grade Math. 2 below zero on a thermometer We say… Words to Integers.
12
INTEGER REVIEW AND ADDITION OF INTEGERS Mrs. Williams 7 th grade Math
-
Upload
meryl-ferguson -
Category
Documents
-
view
219 -
download
0
Transcript of Mrs. Williams 7 th grade Math. 2 below zero on a thermometer We say… Words to Integers.
INTEGER REVIEW AND ADDITION OF INTEGERS
Mrs. Williams 7th grade Math
2 below zero on a thermometerWe say…
Words to Integers
1. Sea Level2. 300 ft. above sea level
3. 2 feet below sea level
Integers on a map
1. Can I borrow $2?2. I have $14.3. I deposited $300.4. I withdrew $20.5. I have a debit of $5 for a
payment.6. I have a credit of $60
for the last purchase.
Integers and money
1.40 points in –the-hole2.15 to the good3.I gained 3 pounds.4.I lost 3 tickets.5.There was a decrease of 2
desks.6.There was an increase of 2
students.
Other ways to “integer talk”
Watch BrainPop video
Intro to Adding integers
When the signs are the same, find the sum.
In other words, ADD!! And keep the sign of the larger.
When the signs are different, find the difference.
In other words, Subtract! And keep the sign of the larger
number.
Adding Integers Notes
Adding integers
Same sign – Sum+
Different signs – Difference
-
24+32-44+ -5
17 + -6-72+21
Mrs. Williams’ turn:
-32 + -13
44+ (-56)
How does this work?
On a number line…. Move to the right with a +, but a -
will turn it around.
Cancelling one another out…For every +, a – will cancel it out.
Let’s do together:
Page 12 Problems
Now you finish the rest with a partner.
Now it’s your turn…
Complete the rest on your own.
You will go over these with Mr. Graves.
NO CALCULATORS!!
Good Luck!!
