Unit 3A

(15.NF.4) Write a multiplication equation to represent the model below, and then solve.

• 3 x 1/3 = 3 1/3

• 3 x 1/3 = 1

• 3 x 1/3 = 3/9

• 3 x 1/3 = 3

(12.NF.1) Add the fractions. Use a model or an equation to justify your thinking.

• 2/5

• 1/6

• 5/6

• 5 5/8

(17.NF.4_b & 21.NF.6) Rhett is placing new carpet in two rooms at his house. The rectangular figure below shows the dimensions for one closet. If the second room is 2 times the area of the first room, what would be the total area for all of the carpet Rhett will put down in his house? Show your work.

• 11 1/4 square yards

• 14 square yards

• 22 1/2 square yards

• 33 3/4

(14.NF.3) Duke and Shaun are packing bags of cookies for a school sale. They have 52 cookies and want to put one dozen cookies in each bag. How many bags can they fill? What part of the bag will be left?

• 4 bags can be filled & 1/3 of the bag will be left

• 4 bags can be filled & 4 of the bag will be left

• 624 bags can be filled & none of the bag will be left

• 156 bags can be filled & none of the bag will be left

(21.NF.6 & 15.NF.4) Fred and Ben each ran laps around the track. Fred completed his run in 16 minutes. Ben completed his run in 3/4 of the amount of time of Fred’s run. What was Ben’s time?

• 8 minutes

• 10 minutes

• 12 minutes

• 14 minutes

• 5 4/12

• 5 1/3

• 5 5/16

• 5 5/8

The softball coach purchased 10 pizzas for the end of the season party. Altogether, the softball team ate 4/5 of the pizzas. How many pizzas did the softball team eat? Show your work.

• The softball team ate 8 pizzas.

• The softball team ate 9 1/5 pizzas.

• The softball team ate 10 4/5 pizzas.

• The softball team ate 40/50 pizzas.

• (5 x 1/9) + (4 x 1/9) = 9/9

• 20 x 1/9= 2 2/9

• (5 x 1/9) x (4 x 1/9) = 20 1/8

• (5 x 1/9) + (5x 1/9) + (4 x 1/9) x (4 x 1/9) = 2

Decide how the sums and differences relate to the benchmark fractions.

• Tom says it is greater than 1 because 2/6 is almost a half and two halves make 1/

• Ryan says it is greater than 1 because the sum, 2/12 is 6 and 6 is greater than 1.

• Kendall says it is less than 1 because 2/6 is between 0 and 1/2 and you need to add more than a half to a half to get a sum greater than 1.

• Landon says it is exactly 1 because 2/6 is equivalent to a half and 1/2 + 1/2 = 1.

Decide how the sums and differences relate to the benchmark fractions.

• Andrea says it is less than 1/2 because 2/5 is already less than 1/2 and we are removing part of it.

• Heather says the difference is less than 1 because the difference is 1/3 which is less than 1/2.

• Ashley says it is greater than 1/2 because the sum is 2 1/40.

• April says it is exactly 1/2.