Addition and subtraction of mixed numbers

Addition and subtraction of mixed numbers

P5

How do we add/subtract mixed numbers

• 1) convert both to like AND improper fractions and add/subtract numerator before simplifying

• Get ready some writing materials

 $2\ \frac{3}{4}\ +\ 1\ \frac{1}{6}=\$  

convert both to like AND improper fractions and add/subtract numerator before simplifying

 $2\ \frac{3}{4}\ +\ 1\ \frac{5}{6}=\$  

leave as mixed number but convert to like fraction and add/subtract whole numbers to whole numbers and numerator of fractions to numerators

 $13\ \frac{1}{5}+\ 6\ \frac{1}{3}=\$  

Multiple Choice

Which of the following improper fractions is NOT equivalent to  $\frac{12}{5}$  ?

•  $\frac{48}{20}$  

•  $\frac{24}{10}$  

•  $\frac{36}{15}$  

•  $\frac{60}{20}$  

Multiple Select

 $2\ \frac{8}{10\ }$ + $2\ \frac{2}{5}$ = 

•  $4\ \frac{10}{15}$  

•  $4\ \frac{8}{10}$  

•  $5\ \frac{1}{5}$  

•  $4\ \frac{12}{10}$  

Multiple Choice

A recipe calls for 6 $\frac{5}{12}$  cups of red peppers and 3 $\frac{2}{3}$  cups of green peppers. What is the total number of cups of peppers needed for the recipe in all? (Answer in simplest form)

• 10  $\frac{1}{12}$  cups

• 2  $\frac{1}{2}$  cups

• 10  $\frac{7}{12}$  cups

• 9  $\frac{1}{6}$  cups

Multiple Choice

 $11\ \frac{9}{11}+\ \frac{3}{4\ }=\$  

•  $11\ \frac{11}{44}$  

•  $11\ \frac{25}{44}$  

•  $12\ \frac{25}{44}$  

•  $13\ \frac{3}{11}$  

 $13\ \frac{2}{7}-\ 7\ \frac{3}{5}\ =\$  

 $5\ \frac{1}{5\ }\ -\ 2\ \frac{2}{3}=\$  

Multiple Choice

 $10\ \frac{2}{3\ }\ -\ 4\ \frac{2}{5}=\$  

•  $5\ \frac{1}{5}$  

•  $6\ \frac{1}{3}$  

•  $5\ \frac{4}{15}$  

•  $6\ \frac{4}{15}$  

Multiple Choice

5  $-$   2  $\frac{3}{8}$  

• 2 $\frac{5}{8}$  

• 3

• 3 $\frac{1}{8}$  

• 2 $\frac{3}{8}$  

Multiple Choice

 $20\ \frac{1}{10}-\ 3\ \frac{2}{5}\ =\$  

•  $16\ \frac{4}{5}$  

•  $16\ \frac{7}{10}$  

•  $17\ \frac{1}{10}$  

•  $17\ \frac{7}{10}$  

Multiple Choice

Mason needs  $2\frac{1}{2}$  bags of cement to make concrete. He already has $1\frac{3}{4}$  bags. How many more bags of cement does he need?

•  $\frac{3}{4}$  

•  $\frac{1}{8}$  

•  $\frac{1}{2}$  

•  $\frac{1}{4}$