A ratio is simply a comparison between two quantities, obtained by dividing one quantity by the other. Example: The ratio of boys to girls in the class was 4:5
Ratio Help
Rate Help
Proportion Help
A proportion is a name we give to a statement that two ratios are equal.
To be a proportion the cross products must be equal
Example:
To make 20 pancakes you have to use 2 eggs.
How many eggs are needed to make 80 pancakes?
20 •X = 80 •2
X=160/20
X=8
Unit Rates:
A rate is a ratio that is used to compare different kinds of quantities.
Unit rate is a ratio between 2 measurements in which the second term is 1
Ratio Concept
Ratios and Rates Vocabulary
Proportions
What is a Proportion
Means Extremes Property
Finding X in a Proportion 1
Finding X in a Proportion 2
Finding X in a Proportion 3
Finding X in a Proportion 4
Finding the Missing Denominator
Finding the Missing Numerator
Two variables are proportional if a change in one is always accompanied by a change in the other.
Ratios in Proportional Relationships
The relationship between the diameter and circumference of a circle
SF01 Scale_Drawing
SF02 Scale_Factor
SF03 Indirect_Measurement
SF04 Shadow
SF05 Similar Figures_Missing Side
SF06 Scale_Perimeter
SF10 Similar_Rectangles_1
SF11 Similar_Rectangles_2
SF12 Similar_Rectangles_3
SF13 Similar_Triangles 1
SF14 Similar Triangles 2
SF15 Similar_Cylinders
Measure the circumference and diameter of circular objects. Find the ratio of circumference to diameter for each object.
Ratio Relationship of π=C/d
EQ14 Ratio Tables
PP01 Ratio_and_Proportion
PP02 Proportions 1
PP03 Proportions 2
PP04 Solving_Proportions
PP05 Proportions word problems and equations
PP06 Directly Proportional
PP07 Inversely Proportional
PP08 Percents_and_Proportions 1
PP09 Percents_and_Proportions 2
PP10 Proportions with integers 1
PP11 Proportions with integers 2
PP12 Proportions with integers 3
PP13 Proportions with integers 4
PP14 Proportions with integers 5
PP15 Proportions with integers 6
PP16 Proportions with integers 7
PP17 Proportions with integers 8
PP18 Proportions with integers 9
PP19 Proportions with integers 10
PP34 Proportions with integers 11
PP20 Find the missing number in the given proportions 1
PP21 Find the missing number in the given proportions 2
PP22 Proportions with decimals 1
PP23 Proportions with decimals 2
PP24 Proportions with decimals 3
PP25 Proportions with decimals 4
PP26 Proportions with decimals 5
PP27 Proportions with decimals 6
PP28 Proportions with decimals 7
PP29 Proportions with decimals 8
PP30 Proportions with decimals 9
PP31 Proportions with decimals 10
PP32 Proportions with Fractions 1
PP33 Proportions with Fractions 2
PP35 Find the missing number in the given proportions 3
PP36 Find the missing number in the given proportions 4
PP37 Find the missing number in the given proportions 5
PP38 Find the missing number in the given proportions 6
PP39 Find the missing number in the given proportions 7
PP40 Find the missing number in the given proportions 8
PP41 Find the missing number in the given proportions 9
PP42 Find the unknown value in the proportion
PP43 Distance – Rate – Time Word Problems.
PP50 Car_Math
PP51 RoadTrip