Dividing by Whole Numbers and Fractions

What is the 1st step to dividing fractions?

• DIVIDE: Just divide across

• CHANGE: Change the division sign to multiplication

• KEEP: Keep the 1st fraction the same

• FLIP: Flip to the reciprocal

When I am doing the 1st step (KEEP: Keep the 1st fraction the same), what do I do if there is a whole number instead of a fraction?

• Nothing

• Put whatever denominator you want

• Put a 1 on top of it

• Put a 1 in as the denominator

Amiyah has 5 cups of batter to make muffins. She needs to use 1/3 cup of batter for each muffin. How many muffins can she make?

• 5/3

• 15

• 3/5

Romaire has 8 boxes of crayons. Ms. Haviland has told him that students only need 1/2 a box for the projects they will work on this spring. How many students Romaire share crayons with?

• 4

• 2/8

• 16

• 1/12
• 3/4
• 12
• 4/3

*Hint: How many total people?

Mathematical Equivalence

OFF

• 1 1/3

• 1/12

• 12

• 3/4

Talla wants to run 4 miles. The track surrounding the field where he plays football is 1/5 mile long. What equation could be used to find the number of laps, L, which Talla will need to run?

• 1/5 ÷ 4 = L

• 1/5 × 4 = L

• 4 × 1/5 = L

• 4 ÷ 1/5 = L

Mr. Borelli has 12 gallons of water to fill buckets for field day. If each bucket needs ⅓ of a gallon to fill, how many buckets can he fill?

• 3/12 bucket

• 12 and ⅓ buckets

• 36 buckets

• 4 buckets

Danilsa has ½ cup of butter.  She pours the same amount into each of three popcorn cartons.  Which equation represents the fraction of the cup of butter, C, that is in each carton?

• 1/2 ÷ 1/3 = C

• 3 ÷ 1/2 = C

• 1/2 ÷ 3 = C

• 2 ÷ 3 = C