Addition and Subtraction of Fractions

How do we add similar fractions?

• Add the numerators then add the common denominator

• Add the numerators then copy the common denominator

• Add the common denominator then copy the numerators

• None of the above

How do we add dissimilar fractions?

• Add the numerators then add the denominators

• Add the numerators then copy the denominators

• Add the denominators then copy the numerators

• Change the fractions to dissimilar fractions first then follow the process of adding similar fractions.

How do we add mixed number with similar fractions?

• Add the whole numbers then add the similar fractions

• Add the whole numbers and numerators then copy the common denominator

• Copy the whole numbers then add the similar fractions

• Copy the similar fractions then add the whole numbers.

Which of the following expression is the best example of adding similar fractions?

• $\frac{1}{9}+\frac{5}{9}+\frac{2}{9}=n$

• $\frac{2}{5}+\frac{2}{6}+\frac{2}{9}=n$

• $\frac{8}{12}+\frac{7}{9}+\frac{8}{10}=n$

Which of the following expression is the best example of adding dissimilar fractions?

• $\frac{1}{9}+\frac{5}{9}+\frac{2}{9}=n$

• $\frac{2}{5}+\frac{2}{6}+\frac{2}{9}=n$

•  $\frac{8}{10}+\frac{7}{10}+\frac{8}{10}=n$ 

How do we subtract similar fractions?

• subtract the numerators then subtract the common denominator

• subtract the numerators then copy the common denominator

• subtract the common denominator then copy the numerators

• None of the above

How do we subtract dissimilar fractions?

• subtract the numerators then subtract the denominators

• subtract the numerators then copy the denominators

• subtract the denominators then copy the numerators

• Change the fractions to dissimilar fractions first then follow the process of subtracting similar fractions.

Which of these expressions is CORRECT?

•  $\frac{1}{9}+\frac{5}{9}+\frac{2}{9}=\frac{8}{9}$ 

•  $\frac{2}{5}+\frac{2}{6}+\frac{2}{9}=\frac{2}{20}$ 

•  $\frac{8}{10}+\frac{7}{10}+\frac{8}{10}=\frac{23}{30}$ 

The following expressions are correct EXCEPT?

•  $\frac{2}{9}+\frac{4}{9}+\frac{1}{9}=\frac{7}{9}$ 

•  $\frac{2}{7}+\frac{2}{7}+\frac{2}{7}=\frac{2}{7}$ 

•  $\frac{3}{10}+\frac{3}{10}+\frac{3}{10}=\frac{9}{10}$ 

 $1\frac{2}{5}+\frac{1}{5}-\frac{1}{2}=n.$  What is the value of  "n"?

•  $1\frac{2}{8}$ 

•  $1\frac{2}{3}$ 

•  $1\frac{1}{10}$