What does -8 - 13 equal?
-21
Solve and Check the Equation
n + 7 = 15
n + 7 = 15
-7 -7
n = 8
Check
O: n + 7 = 15
S: 8 + 7 = 15
S: 15 = 15
What type of angles are these?
Acute Angles
Use the line plot to answer the question.

What fraction of the classrooms had more than 30 students?
2
11
Bridget flipped a coin 5 times. It came up heads 3 times and tails 2 times. What is the probability the coin will come up heads if she flips it again?
1
2
What does 9 + -89 equal?
-80
Solve and Check the equation
n = 5
6
(6) n = 5(6)
6
n = 30
Check
O: n = 5
6
S: 30 = 5
6
S: 5 = 5
What type of triangles are these? Hint: Name and Identify all three triangle separately.

ΔABC is Equilateral
ΔTRS is Scalene
ΔXYZ is Isosceles
You have a bag containing 3 red counters, 2 blue counters, and 1 yellow counter. What is the probability of choosing a yellow or blue counter?
3 = 1
6 2
How much would a 15% tip be on a bill of $32?
32 x .15 = $4.80
What does -9 × 6 equal?
-54
Solve and check the equation
5y + 10 = 25
5y + 10 = 25
-10 -10
5y = 15
5 5
y = 3
Check
O: 5y + 10 = 25
S: 5(3) + 10 = 25
S: 15 + 10 = 25
25 = 25
If a circle has a diameter of 32 inches, what is the radius?
32 ÷2 =16 inches
You have a bag containing 3 red counters, 2 blue counters, and 1 yellow counter. Suppose a blue counter was removed after the first draw. What is the probability of drawing a red counter on the next draw?
3
5
Sue wanted to buy a PS4. It cost $399 but there is a 20% discount. How much would she pay for the PS4?
$399 x .20 = $79.80
$399 - $79.80 = $318.20
What does -8 + 2 × 3 equal?
-8 +2 x 3
-8 + 6
-2
Solve and Check the equation
7 + 2n = 17
7 + 2n = 17
-7 -7
2n = 10
2 2
n = 5
Check
O: 7 + 2n = 17
S: 7 + 2(5) = 17
S: 7 + 10 = 17
17 = 17
What is the circumference of a circle with a radius of 10 ft? Use 3.14 as the value of ∏.
r = 5
d = 10
C = ∏d
C = (3.14)(10)
C = 31.4 ft
What is the mean of the data set?
9 15 12 17 15 11 10 15
13
What number would complete this proportion?
? = 27
10 30
9 x3 = 27
10 x3 30
What is the value of 3 x 2 + 2 - 12 ÷ 3?
3 x 2 + 2 - 12 ÷ 3
9 + 2 - 12 ÷ 3
9 + 2 - 4
11 - 4
7
Solve and Check the equation
3(7 + 2h) = 27
3(7 + 2h) = 27
3(7) 3(2h) = 27
21 + 6h = 27
-21 -21
6h = 6
6 6
h = 1
Check
O: 3(7 + 2h) = 27
S: 3(7 + 2(1)) = 27
S: 3(7 + 2) = 27
3(9) = 27
27 = 27
What is the area of a circle that has a diameter of 8cm? Use 3.14 for ∏.
r = 4
d = 8
A = ∏r2
A = (3.14)(42)
A = (3.14)(16)
A = 50.24 cm2
What is the range of the data?

720 - 250 = 470
What is the range of the following data set?
12, -2, 9, 3, 2.4, 7.1, 11
-2, 2.4, 3, 7.1, 9, 11, 12
12 - -2 = 12 + 2 = 14