Numbers and Operations - Unit 1 (Math 7)

Absolute value

100

l-5l - |6|

-1

200

13 + l-67l

80

300

3 l-9l - 20

7

400

40 - l500l

-460

500

2l15l - 3|-12|

-6

Adding Integers

100

-9+2

7

200

-12+(-6)

-18

300

-10+19+5

14

400

Use mental math. x + 10 = 4

x=-6

500

Use mental math. y + 6 = -2

y= -8

Subtracting Integers

100

4-7

-3

200

9-5-8

-4

300

-4-6

-10

400

-2-3-(-3)

-2

500

-6-(-9)

3

Definitions & Rules

100

How do you subtract one integer from another?

You find the absolute value of the integers, then you add the integers and keep the sign of the greater integer

200

How are adding integers and subtracting integers related?

Adding and subtracting integers are related because when your are adding negative numbers it is technically a subtraction problem.

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 + -3

-15

200

-8 x -8 / -4

-16

300

-48 / 6 / -2

4

400

1.23 / 0.4

3.075

500

23.68 x 3.4

80.512