Fraction Basics
In the fraction 3/8 , which number is the denominator and what does it represent?
8. It represents the total number of equal parts in the whole.
How do you write "3 chocolate bars shared among 5 people" as a fraction?
3/5
Count by halves from 0 to 2 using only fractions.
1/2, 2/2, 3/2, 4/2
"Decompose" the fraction 4/3 into a sum of unit fractions.
1/3 + 1/3 + 1/3 + 1/3
What is a "rate"?
A relationship between two quantities with different units (like km/h or dollars per apple).
If you have a bag of 10 cookies and 4 are chocolate chip while the rest are oatmeal, what fraction represents the comparison of chocolate chip to oatmeal cookies?
4/6 (Total was 10, so 10 - 4 = 6 oatmeal).
6 friends share 3 donuts. Using a drawing, show how much each person gets. (State the fraction in two ways).
3/6 or 1/2
Write 1/10 as decimal
0.1
Write 4 x 1/3 as a repeated addition sentence.
1/3 + 1/3+ 1/3 + 1/3
Rates often use which specific word to show the relationship between units?
"Per" (or "For").
When a fraction acts as an "operator," what does it do to a quantity?
It increases or decreases a quantity by a factor
e.g. finding 3/4 of 100
Which is larger: 3/8 or 5/8? How do you know?
5/8
When denominators are the same, the larger numerator represents more parts of the same sized whole.
If you have 15 tenths, how would you write this as a decimal?
1.5
When multiplying 3 x 1/6, what denominator can you give the whole number 3 to make it easier to multiply?
1
3/1
If 12 cookies are eaten by 4 people, how many cookies is that "per person"?
3 cookies per person.
A bag has 3 blue marbles and 2 yellow marbles. What fraction shows the relationship of yellow marbles to blue marbles?
2/3
Gaby ate 1/4 of a bar and Daniel ate 1/8 of the same sized bar. Who ate more?
Gaby
In unit fractions, the smaller the denominator, the larger the piece.
Write 22/10 as a decimal and explain the "Ones" place value.
2.2. There are 2 wholes (20 tenths) and 2 tenths left over.
Find the missing number: 5 x ? = 5/7
1/7
Clara read 20 pages in 10 minutes. At this rate, how many pages can she read in 20 minutes?
40 pages (The time doubled, so the pages double).
Define a "Unit Fraction" and give three examples.
1/2, 1/3, 1/4 etc.
To solve any fair-share problem, what two numbers do you use for the numerator and denominator?
Numerator = Total amount of items; Denominator = Number of people/sharers.
When counting by eighths, which fraction is equivalent to 1/2?
4/8
A recipe calls for 1/3 cup of sugar. If Sahra doubles the recipe, how much sugar does she need? (Show as addition and multiplication).
1/3 + 1/3 = 2/3 or 2 x 1/3 = 2/3
Rates and ratios are based on multiplication and division. Which two operations are NOT used to find equivalent rates?
Addition and Subtraction.