Ratios
Rates
Percents
Decimals
Proportion
100
What is the definition of a ratio?
The definition of a ratio is a comparison between 2 quantities.
100
A box of a dozen fruit tarts costs $15.00. What is the cost of 1 fruit tart?
$1.25 How to find the unit rate: take the price ($15.00) and divide it by the number of units (a dozen = 12). So 15 divided by 12 = $1.25
100
What is the definition of percent?
A percent is parts per 100 (comparing a number to 100).
100
Write 75% as a decimal.
.75
100
What is the definition of a proportion?
An equation which tells us that two ratios are equal.
200
What is an equivalent ratio?
An equivalent ratio is a ratio whose value has not changed from the original ratio given.
200
What is the definition of a unit rate?
The unit rate is a comparison of cost per single unit.
200
How can you determine if a number is a percentage and not just an integer or a whole number?
By the presence of a percent sign.
200
Write 3/5 as a decimal.
.60 (How to solve - 3 divided by 5)
200
What must a proportion ALWAYS have, since it is an equation?
an equal sign (=)
300
Write an equivalent ratio for 3/5. (How did you make it equivalent?)
Example - 3/5 x 3/3 = 9/15.
300
A bag if 12 lemons cost $2.50. What is the unit rate per lemon? (Hint- round your answer to the nearest hundredth) (Ex - .308 will be rounded to .31)
The cost per lemon is .21
300
Write 75/100 as a percent.
75%
300
In the decimal, 1.605, what place value does the 6 hold?
The tenths place
300
I have 3 red skittles and 5 green skittles. How many red skittles would I have if I had 25 green skittles?
15. 3/5 = x/25. 5 x 5 = 25, so 3 x 5 is 15. Our proportion would be 3/5=15/25
400
Mrs. M has a box of 12 chocolates and a box of 9 pieces of peanut brittle. What is the ratio of chocolates to peanut brittle? Now, she ate 3 pieces of the chocolate, and 4 pieces of the peanut brittle, what is the new ratio of chocolates to peanut brittle?
1st ratio - 12:9, 2nd ratio- 9:5
400
Martin filled up his truck for $39.78. His truck can hold 17 gallons. How much does one gallon of gas cost?
One gallon of gas cost $2.34 - How to solve - $3978 divided by 17 gallons = $2.34
400
Write 3/5 as a percent.
60% - How to solve 3 divided by 5
400
In the decimal, 1.605, what place value does the 5 hold?
the thousandths place
400
True or false: In a proportion, we use the first ratio to predict what the second ratio will be.
True!
500
What are the 3 ways you can write a ratio?
x to y, x:y, and x/y
500
Jill made $92 dollars on Friday. She worked 8 hours that day. How much money does Jill make per hour?
Jill makes $11.50 per hour. How to solve - $92 divided by 8 hours = $11.5 per hour.
500
Write .185 as a percent.
18.5% (Remember - a percent is a number compared to 100, so a percentage cannot be over 100%)
500
In the decimal, 1.605, what place value does the 0 hold?
the hundredths place
500
Mike bicycled 15 miles in 3 hours. How many miles could Mike bicycle in 6 hours?
30 miles. Fun fact, did you know Mrs. M trained for a 30 mile bicycle race when she lived in Florida? Do you think she can bicycle 30 miles? Well, she can!
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