Fraction Computation
(1 ÷ 8) + (2 ÷ 3)
19/24
Mr. Jack cooks 8 cups of pasta for 5 bowls. This many cups of pasta go into each bowl (before sauce).
1 3/5 cups
This is why you rewrite 2/3 and 3/4 as 8/12 and 9/12.
To create like units so the fractions can be added
This fraction completes the equation: __ + __ = 11/10 using only numbers 1–6
5/10 + 6/10
This is 1 1/4 written as an improper fraction.
5/4
To add fractions like 2/3 + 3/4, this step is needed before you can combine them
To make like denominators / finding equivalent fractions.
Mr. Perez cooks 8 cups of pasta for 5 bowls. This many cups of pasta go into each bowl (before sauce).
Each bowl gets 1 1/4 cups of sauce. This is the total amount of pasta + sauce per bowl.
2 17/20 cups
This is why you rewrite 2/3 and 3/4 as 8/12 and 9/12
This part of Banks work—2/3 → 8/12—is correct because of this.
He multiplied numerator & denominator by 4
This is the purpose of using a bar model or area model when solving fraction problems.
To show how the fractions are being combined or compared.
This is 5 7/8 written as an improper fraction.
47/8
4 3/8 – 3 4/5
19/40
The GBW Dance team has 15 members and 6 pizzas. This expression correctly represents how much pizza each person gets.
6 ÷ 15 , 6/15 , 2/5
2/3 + 3/4.
1 5/12
When subtracting fractions like 2/3 − 1/2, you must create these to make subtraction possible.
Like units / equivalent fractions
1 3/8 plus 1 1/2 equals this improper-fraction amount
23/8
1 1/6 + 4 2/9
5 13/18
Miss Ward wants to know if the weights 7/8, 5/8, 1 1/4, and the box weighing 1/2 lb exceed 4 lbs.
Yes they exceed 4lbs
2/3 − 1/2 requires WHAT common denominator to subtract correctly
6
This model best shows how much pizza each team member gets when dividing 6 pizzas among 15 players. (Draw model)
4 2/9 + 1 1/6.
5 13/18
(3 1/2 – 10/4) + 5 3/5
7 9/10
Miss Wollmer starts with 5 7/8 gallons of paint and uses 1 3/8 + 1 1/2. This is how much paint she has left.
3 Gallons
2/3 − 1/2
1/6
Draw a model representing 2 7/8.
Look at Models
5 7/8 − 2 7/8
3