Adding Fractions

Do the denominators need to be the same when adding fractions?

• True

• False

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

You can add the numerators of fractions straight across when the denominators are the same.

• True

• False

Adding fractions with different signs uses the same rules as adding integers.

• True

• False

The greater absolute value of the fractions will determine which sign is applied to the outcome of an addition or subtraction problem.

• True

• False

What is the least common multiple of these denominators

 $\frac{3}{4}\$  and  $\frac{4}{5}$  ?

• 40

• 30

• 20

The common denominator of 

 $\frac{2}{5}$  and  $\frac{3}{5}$  is

• 2

• 5

• 25

The sum of the numerators and denominators in the fractions 
 $\frac{5}{7}$  and  $-\frac{2}{7}$  is

•  $\frac{3}{7}$  

•  $-\frac{3}{7}$  

•  $\frac{7}{7}$  

Find the sum of $-\frac{1}{2}\ +\ \left(-\frac{1}{4}\right)$  

•  $-\frac{2}{6}$  

•  $-\frac{2}{4}$  

•  $-\frac{3}{4}$  

The sum of  $\frac{7}{8}\ +\ \left(-\frac{7}{8}\right)\$  is

•  $0$  

•  $\frac{14}{16}$  

•  $\frac{14}{8}$  

Find the sum of  $-\frac{3}{4}\ +\ \left(-\frac{1}{4}\right)$  

•  $-1$  

•  $1$  

•  $-\frac{2}{4}$