Definitions
What is a Decimal?
A decimal is a part of a whole, which has a whole number and part of a whole separated by a decimal point.
Of the 10 books on fairy tales, Gilly borrowed 3. What fraction of the books on fairy tales did she borrow?
3/10
What is the conversion of 0.8 as a fraction in lowest terms?
4/5
What is 0.25% as a fraction?
1/4
How are percentages related to taxes/discounts/markups?
Tax is the percentage of the price item
What is a Fraction?
It is a part of a whole that has two parts: a numerator and a denominator.
Jesse takes his dog and cat for their annual vet visit. Jesse’s dog weighs 24 pounds. The vet tells him his cat’s weight is three times as much as his dog’s weight. How much does his cat weigh?
24 x 0.3333 = 8
What is 3/5 as a decimal?
0.6
What is 5/20 as a percentage?
25%
What is the sales tax when you buy a TV that costs 550$ with 5% sales tax?
0.05 x 550 = 27.5$
What is a Percentage?
A percentage that can be expressed as a fraction of 100. It means a part per hundred.
I earn 5.50$ per hour. I work 8 hours per day.
How much will I earn after 5 days?
220 dollars
What is 16/20 as a decimal?
0.80
What is 20/25 as a percentage?
80%
Bernie was earning $12.60 an hour. He received a raise of $1.07. What percent was his raise?
1.07/12.60 x 100 = 8.49%
8.49%
What is the relationship between a decimal, fraction, and percentage?
They are all parts of a whole but are expressed in different forms.
Damaiya and Laura have equal‐sized pizzas. Damaiya’s pizza is cut into 6 slices. Laura's’s pizza is cut into 8 slices. Damaiya eats one slice of her pizza and Laura eats 2 slices of her pizza. Are the fractions equivalent?
No. 2/8 > 1/6
What is 7/8 as a decimal?
0.875
What is 2/7 as a percentage?
28.6% or 29%
A business was given an income tax credit of 8% on the cost of its computer. If the computer cost $2200, how much was the tax credit?
0.08x2200 = 176$
What is Budgeting?
It is a plan that helps you manage your money
The park ranger stocks the children’s fishing pond keeping a ratio of 4 sunfish to 3 perch. If he puts 300 sunfish into the pond, how many perch should be put into the pond?
225 perch
What is 12/9 as a decimal?
1.43 (number 3 is repeating)
What is 5 3/4 as a percentage?
575%
A seller pays a real estate commission of 7.5% of the sales price. How much commission would be on a $130,000 house?
0.075 x 130000 = 9750$