Gr 7 Integer Review

Absolute value

100

l-5l

5

200

l-6l

6

300

l-9l

9

400

l-563l

563

500

-l985l

-985

Adding Integers

100

-9+2

7

200

-12+(-6)

-18

300

-10+19+5

14

400

Use mental math. x+(-5)=4

x=9

500

Use mental math. y+6= -2

y= -8

Subtracting Integers

100

4-7

4 + (-7)

-3

200

9- (-5)=

14

300

-4-6

-4 + (-6)

-10

400

-2-3

-2 +(-3)

-5

500

-6-(-9)

-6+ (+9)

3

Definitions & Rules

100

How do you subtract one integer from another?

You add the oppostite or

Keep the first integer

Change the minus to addition

Add the opposites or

Keep, Change, Change

200

How are adding integers and subtracting integers related?

Adding and subtracting integers are related because when your are subtracting, it is the same as "ADDING the OPPOSITE"

300

Define "absolute value".

Absolute Value- The distance on a number line from zero to the integer

400

How do you multiply and divide integers?

Same signs = positives

Different signs = negatives

500

If you have multiplication, addition, subtraction, division, exponents, and parenthesis all in one problem, how do you know which to do first?

Order of Operations: PEMDAS

Parenthesis

Exponents

Multiplication/Division

Addition/Subtraction

BONUS

100

-3 x 4

-12

200

-8 x -8

64

300

-48 divided by 6

-8

400

-100 divided by -10

10

500

-3 x -3 x -3

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