+ Integer Rules Review
Dec 23, 2015
+Warm-Up: 9/9
1. Solve: -42 + 17
2. If yesterday it was -4° and today it is 23°, how much warmer is it today than yesterday?
+Today’s AgendaWarm-Up
Adding and Subtracting Integers Review
Multiplying and Dividing Integer Rules
Integer Foldable
Wrap-Up
Homework
+Adding Integers Review
How do we add integers with the same sign?Add and keep the sign
How do we add integers with different signs?Subtract and keep the sign of the larger.
+Let’s Sing a Song!
Addition Rule: Sung to the tune of “Row, row, row, your boat”
Same signs add and keep,
different signs subtract,keep the sign of the
higher number,then it will be exact!
+Integers and Money
Remember…..
A negative number is like losing money and a positive number is like winning money
+Integers and Money
For example,
-16 + 8 is the same as….
A loss of $16
A gain of $8
**This means you are still down $8!**
+Subtracting Integers Review
How do we change a subtraction problem into an addition problem?Same Change Opposite(-4) – (-5) = (-4) + 55 – 10 = 5 + (-10)
+Integers and Money
This is also like winning and losing money.
5 – 10 A win of $5 and a loss of $10
This means you are in the hole $5, or -5
+Here’s a way I can Remember!To remember whether your answer will be positive or negative when MULTIPLYING or DIVIDING, we’ll use:
Mr. Multiplivision
When multiplyingIntegers, cover the Two signs you are using
Ex.: 5 (-3)
What sign is leftuncovered?
Negative, - That is the sign of The answer
= -15
Choral Response
+Integer Foldable
http://everybodyisageniusblog.blogspot.com/2012/07/integer-foldable.html
+Put your thinking cap on!A, B, C, D, and E correspond to points on a thermometer. Use these clues to plot the points:*B and D are negative
*D is warmer than C
*B is warmer than C
*E and D are the same distance from zero
*E is colder than A
Compose your own thermometer problem and include your answer.