0 1 2 3 4 5 6 7 8 9 10
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1
POSITIVE Integers
NEGATIVE Integers
NEUTRAL Integer
Neither positive nor
negative
● located on the RIGHT side
of zero on the number line
● values are GREATER THAN 0
● located on the LEFT side of
zero on the number line
● values are LESS THAN 0
An INTEGER is a positive number, a negative
number, or zero.
● ( – ) (eg. -2) ● ( + ) or none (eg. +2 or 2)
-0
-87
-90
+9
-22
67
11
55
-3
Identify the negative integers.
-41
ABSOLUTE VALUE
OF INTEGERS
The absolute value of an integer is its distance
from zero on the number line. The symbol
for absolute value is a bar||.
0 1 2 3 4 5 6 7 8 9 10
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1
“the absolute value of +5 is 5.”
|+5| = 5
|-4| = 4 “the absolute value of -4 is 4.”
Give the absolute value of each integer.
a) |7| = 7
b) |-24| = 24
c) |-75| = 75
d) |100| = 100
e) |20| = 20
f) |-333| = 333
-11
-87
|-90|
-2
|-22|
|-67|
-9
55
|1000|
Identify the values greater than -10
|40|
-10
BATTLE OF VALUES
A battle where the card that has the lesser value wins.
|-5| |-8|
VS
|-1|
|18|
VS
|-9| 8
VS
-60
|10|
VS
|-12| |-11|
VS
|0| -77
VS
|-3| 4
VS
RULES FOR ADDING AND
SUBTRACTING INTEGERS
Adding Integers with the Same Signs
POSITIVE + POSITIVE = POSITIVE
NEGATIVE + NEGATIVE = NEGATIVE
5 + 3 = 8
-5 + -3 = -8
10 + 6 = --
-10 + -6 = 16
16
-16
When adding
integers, SAME signs
🡪 add, copy sign
POSITIVE + NEGATIVE = POSITIVE
5 + (-3) = 2 -6 + 10 = 4
Adding Integers with the Different Signs
-3 + 5 = 2 10 + -6 = 4
2 4
POSITIVE + NEGATIVE = POSITIVE
3 + -5 = -2 6 + -10 = -4
-5 + 3 = 2 -10 + 6 = 4
-2 -4
When adding integers, DIFFERENT signs 🡪 subtract, copy the sign of the integer
with the GREATER absolute value
12
1 5 + 7 =
-2
2 -7 + 5 =
-2
3 5 + -7 =
-12
4 -5 + -7 =
2
5 -5 + 7 =
2
6 9 + -7 =
-15
7 -20 + 5 =
-19
8 -8 + -11 =
-50
9 -100 + 50 =
20
10 14 + 6 =
Add the following.
When adding integers, DIFFERENT signs 🡪 subtract, copy the sign of
the integer with the GREATER absolute value
When adding integers, SAME signs 🡪 add, copy sign
Subtracting Integers with the Same Signs
POSITIVE - POSITIVE = POSITIVE
5 - 3 = 2
10 - 6 = 4
5 + -3 = 2
10 + -6 = 4
4
3 - 5 = -2
6 - 10 = -4
3 + -5 = -2
6 + -10 = 4
-4
POSITIVE - POSITIVE = NEGATIVE
4
-4
When subtracting integers, SAME signs 🡪 subtract, copy the sign of the
integer with the GREATER absolute value
Subtracting Integers with the Same Signs
NEGATIVE - NEGATIVE = POSITIVE or NEGATIVE
-5 – -3 = -2
-6 – -10 = 4
-5 + 3 = -2
-6 + 10 = 4
Minus negative will become PLUS POSITIVE
– -3 will become + 3
4 4
Subtracting Integers with Different Signs
POSITIVE - NEGATIVE = POSITIVE
5 – -3 = 8
10 – -6 = 16
5 + 3 = 8
10 + 6 = 4
16
Minus negative will become PLUS POSITIVE
– -3 will become + 3
16
Since the operation will become ADDITION, SAME signs 🡪
add, copy sign
Subtracting Integers with Different Signs
NEGATIVE - POSITIVE = NEGATIVE
-5 – 3 = -8
-10 – 6 = -16
-5 + -3 = -8
-10 + -6 = 4
-16
-16
Minus positive will become PLUS NEGATIVE
– 3 will become + -3
ADD, SAME signs (both negative) 🡪 add, copy sign (negative)
1
1 4 + -3 =
-9
2 -4 - 5 =
8
3 3 - -5 =
-1
4 -5 - -4 =
-1
5 3 - 4 =
17
6 10 - -7 =
-50
7 -20 - 30 =
2
8 -8 - -10 =
-50
9 0 - 50 =
-1
10 11 - 12 =
Perform the indicated operation.
Operations on Integers:
Multiplication and
Division
Multiplying Integers with the Same Signs
POSITIVE × POSITIVE = POSITIVE
NEGATIVE × NEGATIVE = POSITIVE
5 × 3 = 15
-5 (-3) = 15
(10)(6) = --
-10 -6= 16
60
60
●
Multiply.
3
10
15
20
12
a. 1 × 3 =
b. -2(-5) =
c. 3 5 =
d. (-5)(-4) =
e. 3 4 =
●
●
Multiplying Integers with Different Signs
POSITIVE × NEGATIVE = NEGATIVE
NEGATIVE × POSITIVE = NEGATIVE
5 -3 = -15
-5 3 = -15
10 -6 = --
-10 6 = 16
-60
-60
●
●
●
●
Multiply.
-3
-10
-15
-20
-12
a. 1 × -3 =
b. -2 × 5 =
c. -3 × 5 =
d. 5 × -4 =
e. -3 × 4 =
-3
1 1 × -3 =
10
2 -2 × - 5 =
-15
3 3 × -5 =
20
4 -5 × -4 =
12
5 3 × 4 =
-70
6 10 × -7 =
6
7 -2 × - 3 =
80
8 -8 × -10 =
-50
9 -1 × 50 =
25
10 5 × 5 =
Multiply.
Dividing Integers with the Same Signs
POSITIVE ÷ POSITIVE = POSITIVE
NEGATIVE ÷ NEGATIVE = POSITIVE
2
2
Divide.
3
8
5
Dividing Integers with Different Signs
NEGATIVE ÷ POSITIVE = NEGATIVE
POSITIVE ÷ NEGATIVE = NEGATIVE
-2
-2
Divide.
-7
-4
-3

Integers.pdf

  • 1.
    0 1 23 4 5 6 7 8 9 10 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 POSITIVE Integers NEGATIVE Integers NEUTRAL Integer Neither positive nor negative ● located on the RIGHT side of zero on the number line ● values are GREATER THAN 0 ● located on the LEFT side of zero on the number line ● values are LESS THAN 0 An INTEGER is a positive number, a negative number, or zero. ● ( – ) (eg. -2) ● ( + ) or none (eg. +2 or 2)
  • 2.
  • 3.
  • 4.
    The absolute valueof an integer is its distance from zero on the number line. The symbol for absolute value is a bar||. 0 1 2 3 4 5 6 7 8 9 10 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 “the absolute value of +5 is 5.” |+5| = 5 |-4| = 4 “the absolute value of -4 is 4.”
  • 5.
    Give the absolutevalue of each integer. a) |7| = 7 b) |-24| = 24 c) |-75| = 75 d) |100| = 100 e) |20| = 20 f) |-333| = 333
  • 6.
  • 7.
    BATTLE OF VALUES Abattle where the card that has the lesser value wins.
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15.
    RULES FOR ADDINGAND SUBTRACTING INTEGERS
  • 16.
    Adding Integers withthe Same Signs POSITIVE + POSITIVE = POSITIVE NEGATIVE + NEGATIVE = NEGATIVE 5 + 3 = 8 -5 + -3 = -8 10 + 6 = -- -10 + -6 = 16 16 -16 When adding integers, SAME signs 🡪 add, copy sign
  • 17.
    POSITIVE + NEGATIVE= POSITIVE 5 + (-3) = 2 -6 + 10 = 4 Adding Integers with the Different Signs -3 + 5 = 2 10 + -6 = 4 2 4 POSITIVE + NEGATIVE = POSITIVE 3 + -5 = -2 6 + -10 = -4 -5 + 3 = 2 -10 + 6 = 4 -2 -4 When adding integers, DIFFERENT signs 🡪 subtract, copy the sign of the integer with the GREATER absolute value
  • 18.
    12 1 5 +7 = -2 2 -7 + 5 = -2 3 5 + -7 = -12 4 -5 + -7 = 2 5 -5 + 7 = 2 6 9 + -7 = -15 7 -20 + 5 = -19 8 -8 + -11 = -50 9 -100 + 50 = 20 10 14 + 6 = Add the following. When adding integers, DIFFERENT signs 🡪 subtract, copy the sign of the integer with the GREATER absolute value When adding integers, SAME signs 🡪 add, copy sign
  • 19.
    Subtracting Integers withthe Same Signs POSITIVE - POSITIVE = POSITIVE 5 - 3 = 2 10 - 6 = 4 5 + -3 = 2 10 + -6 = 4 4 3 - 5 = -2 6 - 10 = -4 3 + -5 = -2 6 + -10 = 4 -4 POSITIVE - POSITIVE = NEGATIVE 4 -4 When subtracting integers, SAME signs 🡪 subtract, copy the sign of the integer with the GREATER absolute value
  • 20.
    Subtracting Integers withthe Same Signs NEGATIVE - NEGATIVE = POSITIVE or NEGATIVE -5 – -3 = -2 -6 – -10 = 4 -5 + 3 = -2 -6 + 10 = 4 Minus negative will become PLUS POSITIVE – -3 will become + 3 4 4
  • 21.
    Subtracting Integers withDifferent Signs POSITIVE - NEGATIVE = POSITIVE 5 – -3 = 8 10 – -6 = 16 5 + 3 = 8 10 + 6 = 4 16 Minus negative will become PLUS POSITIVE – -3 will become + 3 16 Since the operation will become ADDITION, SAME signs 🡪 add, copy sign
  • 22.
    Subtracting Integers withDifferent Signs NEGATIVE - POSITIVE = NEGATIVE -5 – 3 = -8 -10 – 6 = -16 -5 + -3 = -8 -10 + -6 = 4 -16 -16 Minus positive will become PLUS NEGATIVE – 3 will become + -3 ADD, SAME signs (both negative) 🡪 add, copy sign (negative)
  • 23.
    1 1 4 +-3 = -9 2 -4 - 5 = 8 3 3 - -5 = -1 4 -5 - -4 = -1 5 3 - 4 = 17 6 10 - -7 = -50 7 -20 - 30 = 2 8 -8 - -10 = -50 9 0 - 50 = -1 10 11 - 12 = Perform the indicated operation.
  • 24.
  • 25.
    Multiplying Integers withthe Same Signs POSITIVE × POSITIVE = POSITIVE NEGATIVE × NEGATIVE = POSITIVE 5 × 3 = 15 -5 (-3) = 15 (10)(6) = -- -10 -6= 16 60 60 ●
  • 26.
    Multiply. 3 10 15 20 12 a. 1 ×3 = b. -2(-5) = c. 3 5 = d. (-5)(-4) = e. 3 4 = ● ●
  • 27.
    Multiplying Integers withDifferent Signs POSITIVE × NEGATIVE = NEGATIVE NEGATIVE × POSITIVE = NEGATIVE 5 -3 = -15 -5 3 = -15 10 -6 = -- -10 6 = 16 -60 -60 ● ● ● ●
  • 28.
    Multiply. -3 -10 -15 -20 -12 a. 1 ×-3 = b. -2 × 5 = c. -3 × 5 = d. 5 × -4 = e. -3 × 4 =
  • 29.
    -3 1 1 ×-3 = 10 2 -2 × - 5 = -15 3 3 × -5 = 20 4 -5 × -4 = 12 5 3 × 4 = -70 6 10 × -7 = 6 7 -2 × - 3 = 80 8 -8 × -10 = -50 9 -1 × 50 = 25 10 5 × 5 = Multiply.
  • 30.
    Dividing Integers withthe Same Signs POSITIVE ÷ POSITIVE = POSITIVE NEGATIVE ÷ NEGATIVE = POSITIVE 2 2
  • 31.
  • 32.
    Dividing Integers withDifferent Signs NEGATIVE ÷ POSITIVE = NEGATIVE POSITIVE ÷ NEGATIVE = NEGATIVE -2 -2
  • 33.