Ratios
Formulas
Area
Equivalent ratios
get off my property
100
There are 30 students in the gym. Seventeen are girls. What's the ratio of boys to total?
13: 30
100
What is the formula for area of a triangle?
1/2(bh)
100
What is the area of a triangle that has a base of 20 and a height of 20?
200 square units
100
What do you call two ratios that are written differently but have the same value?
equivalent ratios
100
1 + (2 + 3) = (1 + 2) + 3 is an example of what property?
Associative Property
200
There are 58 cars in the parking lot and 36 are electric cars. What is the ratio of electric cars to gas cars?
36:22
200
What is the formula for area of a rectangle?
Length times width
200
What is the area of a rectangle that has a length of 1.2 and a width of 1.2?
1.44 units squared
200
The original recipe for a batch of tuna casserole requires 3 cups of pasta and 6 ounces of tuna. How many batches of casserole can be made if you have 1 cups of pasta and 2 ounces of tuna?
one-third 1/3
200
this is an example of what property?
3 x 4 = 4 x 3
commutative Property
300
Bill Nye has 42 broken beakers and 48 unbroken beakers. What is the ratio of total beakers to unbroken beakers?
90:48
300
What is the formula for area of a parallelogram?
bh
300
What is the area of parallelogram that has base of 25.5 and a height of 10?
255 units squared
300
The ratio of pasta to soup is 3:10 for an original recipe. How many ounces soup would you need if you used 15 cups of pasta?
50 ounces
300
This is an example of what property.
3 x (4 + 5) = (3 x 4) + (3 x 5)
Distributive Property
400
The recipe for Casserole asks for 3 cups of pasta, 6 ounces of tuna, and 10 ounces of cream of chicken soup. What is the ratio of soup to tuna?
10 : 6
400
What is the formula for area of a trapezoid?
1/2(b1+b2)h
400
What is the area of a trapezoid that has a base one of 2.25, a base two of 3.25, and a height of 10?
55
400
Find the missing number.
1:3 = __ :51
17
400
This is an example of what property?
0 x 5 = 0
Zero property of multiplication
500
The recipe for Casserole asks for 3 cups of pasta, 6 ounces of tuna, 10 ounces of cream of chicken soup, one cup of cheese, and 2 cups of french fried onions. What is the ratio of french friend onions to tuna?
2 : 6
1: 3
500
What is the formula for surface area?
2(lw) + 2(lh) + 2(wh) =
Lw + lh + wh = sum times 2
500
find the surface area.
52 units squared
500
Find the missing number.
12:13 = ___:156
144
500
The identity property of addition says
a number + 0 = that number