Understanding Integers

Understanding Integers

​use your notebook to write down any notes and help you solve problems

ADDING NUMBERS WITH THE SAME SIGN 

(+) + (+) OR (-) + (-)

positive  +  positive negative  +  negative

​JUST ADD THE NUMBERS & keep the sign

Multiple Choice

100 + 8 =

• -108

• 800

• 108

• 92

Multiple Choice

-6 + -24 =

• 30

• -30

• -18

• 18

Multiple Choice

-50 + -12 =

• -62

• 62

• 38

• -38

Multiple Choice

-33 + -55 =

• 22

• -32

• -88

• 88

Multiple Choice

-36 + -92 =

• 128

• -130

• 132

• -128

ADDING NUMBERS WITH DIFFERENT SIGNS

(+) + (-)

positive  +  negative

​

1) SUBTRACT the numbers

​2) Take the sign of the number farther from 0

Multiple Choice

1 + -5 = 

• 4

• -6

• 6

• -4

Multiple Choice

100 + -9

• 109

• 91

• -91

• -109

Multiple Choice

-26 + 9 =

• 17

• -17

• -133

• 40

Multiple Choice

-56 + 50 =

• 6

• -6

• -52

• -95

Multiple Choice

55 + -75 =

• -20

• 20

• 130

• -130

SUBTRACTING INTEGERS

​

KEEP CHANGE FLIP!!

​

​KEEP - keep the first number the same.

​CHANGE - change subtraction to addition

​FLIP - flip the sign of the 2nd number

​

​EXAMPLE:

​-5 - 6

​= -5 + -6

​= -11

Multiple Choice

-4 - 6 =

• -10

• 10

• 2

• -2

Multiple Choice

-11 - (-11) =

• 0

• 22

• -22

• 11

Multiple Choice

-12 - 27 =

• -39

• 15

• 39

• -9

Multiple Choice

33 - 41 =

• -8

• 8

• 14

• -14

Multiple Choice

-85 - (-46) =

• 39

• -39

• 131

• -49

absolute value

the distance a number is from 0

​

​|-5| = 5

​|5| = 5

Opposites

The opposite of a negative number is a positive number. Such as -3, the opposite of (negative) -3 is a positive 3.

Multiple Choice

Is absolute value always positive?

• yes

• no

Multiple Choice

What is the absolute value of |-26|

• 26

• -26

• -36

• 36

Multiple Choice

What is the absolute value of |-37|.

• 0

• 37

• -37

• 30

Multiple Choice

Which represents the absolute value of 10?

• 10

• -10

• -1/10

• 11

Multiple Choice

Which list orders the integers from least to greatest?

• -5, 3, -2, l -4l

• -2, 3, l-4l, -5

• -5, -2, 3, l-4l

• -2, -5, 3, l-4l

Multiple Choice

Which number represents the opposite of 67?

• -67

• 76

• 67

• 0

Multiple Choice

l-4l

• -4

• 0

• 4

• -0

​classifying numbers

​use your notes on

​

​whole numbers​

​integers

​rational numbers

Multiple Choice

The numbers 0,1,2,3...are called?

• whole numbers

• integers

• rational numbers

• whole, integer, rational

Multiple Choice

What is the best classification for this number? 10

• whole, integer, rational

• whole

• integer

• rational

Multiple Choice

What is the best classification for this number? 1/4

• integer

• rational

• whole, integer, rational

• whole

Multiple Choice

-10 is a whole number?

• True

• False 

Multiple Choice

An example of an integer is...

• 9.1

• 8/9

• -9

• -2.3

Multiple Choice

• Yes

• No

Multiple Choice

• Yes

• No