Ratios & Rates
If there are 4 apples and 2 oranges, the ratio of apples to oranges can be written as...
What is 3/4+2/4?
5/4 or 1 1/4
Write an equation for the statement: "Five times a number is 20.
5 x f = 20
What is the area of a rectangle with a length of 5 cm and a width of 3 cm?
15 cm
What is 25% of 80?
20
1/4×80=20
0.25x80=20
If the ratio of cats to dogs is 3:2 and there are 12 cats, how many dogs are there?
8 dogs
3x = 2 x 12
Subtract 5.6−2.3
3.3
Solve for x: x+7=12
x=5
How do you calculate the volume of a rectangular prism?
Volume=base x height
If a shirt costs $40 and is on sale for 20% off, what is the sale price?
Sale Price=Original Price−Discount
$32
A recipe requires 2 cups of flour for every 3 cups of sugar. If you want to use 6 cups of flour, how much sugar do you need?
2x=3×6
9 cups of sugar
Multiply −32×22
-704
Simplify: -3(x+4)
-3x-12 or -3x+(-12)
If two angles are complementary and one angle measures 30 degrees, what is the measure of the other angle?
60 degrees
Convert 0.75 to a fraction
3/4
If a car travels 150 miles using 5 gallons of gas, what is the rate of miles per gallon?
Miles per gallon=Total miles / Total gallons=150/5
Miles per gallon=30
Divide −15.5÷5
-3.1
Solve for y: 2y−5=9
y=7
Calculate the surface area of a cube with a side length of 4 cm.
The surface area of the cube is 96 cm².
If you score 15 out of 20 on a test, what percentage did you get?
scored 75% on the test
Solve the proportional relationship:
If x/4 = 3/12, what is x?
x=1
What is the result of 2/3+1/6?
5/6
What property is used in the equation a+b=b+a?
Commutative Property: the order of numbers in addition or multiplication doesn't change the result.
Could 2.8 cm, 4 cm and 2.8 cm be the side lengths of a triangle?
True
Solve: If a population increases from 200 to 250, what is the percent increase?
Percent increase in population is 25%