Bulding Fractions Conceptual Understanding

To subtract fractions, the fractions need to have a common denominator.
In other words, the size of each part (denominator) needs to be the same before adding or subtracting the total number of parts together.

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Subtracting Fractions

Multiple Choice

What is the difference of these fractions?

$$1\frac{3}{8}\ -\ \frac{1}{3}\ =\$$

• $$\frac{25}{24}$$

• $$1\frac{1}{24}$$

• $$1\frac{12}{24}$$

• $$\frac{9}{12}$$

Multiple Choice

At a farm, $$\frac{2}{9}$$ of the total area is covered by a pumpkin patch and $$\frac{1}{7}$$ of the total area is covered by a cornfield.

What fraction of the total area of the farm is covered by the pumpkin patch and the cornfield combined?

• $$2\frac{10}{12}$$

• $$13\frac{1}{3}$$

• $$\frac{3}{63}$$

• $$\frac{1}{21}$$

Gathering and interpreting information is helpful for understanding many situations that occur in everyday life.

That can look like tally marks transferred onto a graph. (5.MDR.7.2)

Gathering Data through Information

Multiple Choice

Tina measures the lengths, in inches, of 10 insects. She records the lengths of the insects on the line plot shown.

What is the total length, in inches, of the 3 longest insects?

• $$2\frac{1}{4}$$

• $$3$$

• $$4\frac{1}{2}$$

• $$5$$

Multiple Choice

Ten runners participated in a marathon. The line plot shows the number of bottles of water each runner drank during the marathon.

What is the T O T A L number of bottles of water the runners drank?

• 10

• 21

• 25

• 28