Word Wall Words – Ratio, Proportion and Percents
Word Wall Words - Probability
Term
Definition
1
Ratio
A ratio is the indicated quotient of one number
divided by a second number; it compares two
quantities by division.
2
Lowest Terms
A ratio is in lowest terms when the two numbers
are relatively prime.
3
Relatively Prime
Two or more numbers are said to be relatively
prime when their ONLY common factor is 1.
4
Rates
A rate is a ratio that compares quantities in
different units. Rates should be simplified to a per
unit form.
5
Unit Rate
A unit rate is a ratio in which one of the numbers
is 1.
6
Unit Price
The unit price is the price of one item.
7
Proportion
A proportion is an equation that states that two
ratios are equal.
8
Terms
The numbers in the proportion are the terms of the
proportion.
9
Cross Multiply
Cross multiplication is the method used to solve a
proportion. Multiplying the numbers diagonal from
each other.
10
Cross Products
The cross products are the product of the
numerator of the first ratio and the denominator of
the second ratio, the product of the denominator
of the first ratio and the numerator the second
ratio. Cross products are equal.
11
Scale Drawing
A scale drawing is a drawing in which all lengths
are in the same ratio to actual lengths.
12
Scale
Scale is the relationship between the length in the
drawing to the actual length.
13
Indirect Measurements
Indirect measurement is a method of determining
length or distance without measuring directly.
14
Similar Figures
Similar figures have the same shape, but not
necessarily the same size. Similar figures have
corresponding angles and sides.
15
Outcomes
Outcomes are the possible results of an action.
i.e. six outcomes for rolling a single number cube
16
Event
An event is any outcome or group of outcomes.
17
Single Event
A single event involves the use of one item.
18
Compound Event
A compound event involves the use of two or
more items.
19
Probability (of an Event)
The probability of an event is the ratio of the
number of favorable outcomes to the number of
possible outcomes.
20
Complement (of an Event)
The complement of an event is the opposite of
that event.
21
Percent
A percent is the ratio of a number to 100.
22
Amount of Change
Amount of change is the difference between the
original amount and the new amount. (Original
minus the new amount)
23
Percent of Change
Percent of change is the amount of change
divided by the original price.
24
Percent of Increase
When the new amount is greater than the original
price, you are finding the percent of increase.
25
Percent of Decrease
When the new amount is less than the original
amount, you are finding the percent of decrease.
26
Discount
A discount is a decrease (amount of change) in
the price of an item.
27
Markup
A markup is an increase (amount of change) in
the price of an item.