Number System
1.5 + (-3.4)
How do you find constant of proportionality?
y / x
The side length of a square is represented by the expression n-1.5
Find an equivalent expression.
Answers may vary.
What are complementary angles?
2 angles whose measures add up to 90 degrees
How do you find the mean of a set of numbers?
Add up all the numbers you have and divide by how many numbers in the set.
1/3 + (-3/6)
Joan wants to buy a TV. The TV costs $200. It has a tax of 5%.
What is one way Joan can find her answer?
200 + (200 x (0.05))
or
200 x 1.05
A garden has a length of 90 and a width of x.
Write an expression for the perimeter of the rectangular garden.
Do these measurements make a triangle?
3, 5, 7
Yes
What is the mode of the following numbers?
1, 2, 2, 4, 3, 2, 3, 5, 1, 2
2
On a test, wrong answers are worth -5.25 and right answers are worth 3.5 points. So far, Marshall has one right and one wrong answer.
What is Marshall's current score?
-1.75
Find how many people can ride the rollercoaster if you have 7 cars.
Solve.
0.06x - 0.18 = 0.12
x = 5
Find the area of the triangle.
36 units squared
Ms. Rose puts the names of all the girls in a box and chooses two without looking. Then she does the same for the boys' names.
Is this a random sample or biased?
Random
James baked 5 1/4 dozen PB cookies and 4 5/6 dozen oatmeal cookies.
Estimate the number of dozens of cookies he baked.
5 + 5 = 10
A shirt costs $22. It is on on sale for 40% off.
What is the discounted price of the shirt.
$13.20
Stephanie wants to buy s tomato plants. Diego wants to buy d tomato plants. Each plant costs $7. Stephanie uses a coupon for $25 off the total cost.
Which expression represents the total cost with the discount?
a) 7(s+d) - 7(0.25)
b) 7(s+d) - 25
c) 25(s+d) - 7
B
A cube has the dimensions 1.6, 3.2, and 4.
Find the volume of the cube.
20.48 units cubed
Ana surveyed 20 randomly chosen members of the schools book club.
Is this random or biased?
Biased.
Which multiplication equations are true?
a) (-b) x (-1) = (-b)
b) (-b) x 0 = 0
c) (-b) x 1 = (-b)
d) (-b)x a = a x (-b)
B, C, D
14 windows
Solve the following 2 step equation.
82.5 + 8(0.25x) = 338.5
The radius of the circle is 5cm.
Find the area of the circle and the circumference of the circle.
Area = 78.5 cm squared
Circumference = 31.4 cm
Find MAD of the data set. The mean is 8.
5, 7, 12, 3, 7, 6
2.66