Adding and Subtracting Mixed Numbers

Adding and Subtracting Mixed Numbers

with Mrs. LaCross

Adding Fractions with Like Denominators

• Add the numerators

• Keep the denominators the same

Model

When the denominator is the same you will add the numerators. All of your pieces are the same size when you have like denominators.

Model

You will use the same process with subtraction. Keep your denominators the same and subtract the numerators.

Examples

• Keep the denominator the same

• Add the numerators

Multiple Choice

  $\frac{1}{5}+\frac{3}{5}\ =\$  

•  $\frac{4}{5}$  

•  $\frac{4}{10}$  

•  $\frac{2}{5}$  

•  $\frac{3}{5}$  

Multiple Choice

 $\frac{7}{15}\ -\ \frac{5}{15}\ =$  

•  $\frac{12}{15}$  

•  $\frac{2}{30}$  

•  $\frac{2}{15}$  

•  $\frac{12}{30}$  

Mixed Numbers

• Have a whole

• Have a part (fraction)

Adding Mixed Numbers

Step 1: Add whole numbers

Step 2: Add numerators

Step 3: Same denominators

Multiple Select

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

•  $1\ \frac{0}{5}$  

•  $4\ \frac{1}{5}$  

•  $\frac{36}{5}$  

•  $3\ \frac{6}{5}$  

Multiple Choice

 $5\ \frac{3}{7}\ +\ 3\ \frac{2}{7}\ =$  

•  $8\ \frac{5}{14}$  

•  $2\ \frac{1}{7}$  

•  $8\ \frac{5}{7}$  

•  $\frac{85}{7}$  

Multiple Choice

 $6\ \frac{4}{5}\ -\ 3\ \frac{3}{5}\ =$  

•  $9\ \frac{7}{5}$  

•  $9\ \frac{7}{10}$  

•  $3\ \frac{7}{5}$  

•  $3\ \frac{1}{5}$  

Poll

Are you understanding adding and subtracting mixed numbers?

• Yes, I am understanding well!

• I think I get it, but need a little more practice.

• It is beginning to make sense, but I need more examples.

• Can we schedule a google meet for more explanation?