Adding/Subtracting Fractions with both

My sister and I ate some of the cookies she made. She ate 3/5 of them and I ate 1/10 of them. How much of the cookies did we eat?

• 1/2 of the cookies
• 7/10 of the cookies
• 4/15 of the cookies

Rachel spent 1/3 of her allowance on a new book and 2/5 of her allowance on some pencils. How much of her allowance did she spend?

• 2/15 of her allowance
• 3/8 of her allowance
• 11/15 of her allowance

My dad was painting my bedroom. He started with 5/9 of a can of paint. He used 1/3 of the can. How much paint did he have left?

• 2/9 of a can of paint
• 1/2 of a can of paint
• 2/3 of a can of paint

Oliver and Charlie are eating from the same box of cereal. Oliver eats 2/12 of the box and Charlie eats 2/6 of the box. How much of the cereal do they eat together? Simplify the fraction.

• 1/3 of the box of cereal
• 4/18 of the box of cereal
• 1/2 of the box of cereal

(Choose one that is true) When you add or subtract fractions with unlike denominators you..

• Add both the numerators and denominators

• Change the denominator by picking a random number then divide

• Find the least common multiple of both denominators

• none of these are true

When adding and subtracting fractions, which value needs to be the same in all values being added/subtracted?

• Numerator

• Denominator

What is the process of making two fractions with unlike denominators able to be added or subtracted called?

• Finding the least common multiple or least common denominator

• Addition

• Multiplication

• Reverse multiplication

While making desserts for a bake sale, Lyla used 7/10 of a scoop of brown sugar as well as 1/2 of a scoop of white sugar. How much more brown sugar did Lyla use?

• 1 1/2
• 2/3
• 1/5 
• 3/4

What is the difference in the following equation in lowest terms:
18/36 - 9/36 =

• 10/36
• 1/4
• 2/3
• 12/36

1/5 + 4/15=

• 5/20
• 3/10
• 3/15
• 5/15