St. Fractricks' Math

St. Fractricks' Math

Adding and Subtracting Mixed Numbers

Steps to Add/Subtract Mixed numbers

• Write down the problem

• Find a Common Denominator

• Make equivalent fractions

• Add/Subtract

• Simplify _no improper fractions

• Circle your final answer

Multiple Choice

 $5\ \frac{2}{5\ }-3\ \frac{7}{10}\ =$  

•  $2\ \frac{7}{10}$  

•  $1\ \frac{7}{10}$  

•  $2\ \frac{5}{15}$  

Multiple Choice

 $8\ \frac{1}{4}\ +2\ \frac{4}{5}=$  

•  $10\ \frac{21}{20}$  

•  $10\ \frac{5}{9}$  

•  $11\ \frac{1}{20}$  

Fill in the Blanks

Ways to find a Common Denominator

• Multiply denominators by each other

• List the multiples of each denominator

• Use Prime Factorization

• is one denominator a multiple of the other?

Multiple Select

What did St. Patrick do?

• He discovered Ireland.

• He was a missionary.

• driving the snakes out of Ireland.

Multiple Choice

 $7\ \frac{1}{8}\ -4\ \frac{5}{12}=$  

•  $2\ \frac{7}{24}$  
  

•  $2\ \frac{17}{24}$  
  

•  $3\ \frac{4}{12}$  
  

Multiple Choice

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

•  $8\ \frac{5}{18}$  

•  $7\ \frac{10}{16}$  

•  $8\ \frac{7}{18}$  

Multiple Choice

 $6\ \frac{8}{12}-3\ \frac{1}{6}=$  

•  $3\ \frac{6}{12}$  
  

•  $3\ \frac{1}{2}$  
  

•  $3\ \frac{4}{12}$  
  

Multiple Choice

 $4\ \frac{1}{5}-3\ \frac{1}{3}=$  

•  $1\ \frac{2}{15}$  

•  $1$  

•  $\frac{13}{15}$  

Fill in the Blanks