Add and Subtract Mixed Numbers Lesson

1. Stack up the mixed numbers so the whole numbers and fractions are separated.

2. Add the whole numbers.

3. Find common denominators and add the fractions

​

​How to Add Mixed Numbers

Multiple Choice

$$3\ \frac{4}{8}+2\ \frac{2}{8}$$

• $$32\ \frac{6}{8}$$

• $$5\ \frac{6}{16}$$

• $$5\ \frac{6}{8}$$

Multiple Choice

Find the sum. $$2\ \frac{3}{12}\ +6\ \frac{5}{12}$$

• $$8\ \frac{8}{24}$$

• $$8\ \frac{5}{6}$$

• $$8\ \frac{8}{12}$$

• $$8\ \frac{1}{6}$$

1. Stack up the mixed numbers so the whole numbers and fractions are separated.

2. Add the whole numbers.

3. Find common denominators and add the fractions

​

​Adding Mixed Numbers

​Some people choose to turn the mixed numbers to improper fractions, add them together, and then turn them back to a mixed number in the end. This is just another option for you to consider!

​

Another option...

Multiple Choice

$$4\ \frac{3}{8}+7\ \frac{1}{4}$$

• $$11\ \frac{4}{8}$$

• $$11\ \frac{3}{4}$$

• $$11\ \frac{5}{8}$$

• $$\frac{5}{8}$$

Multiple Choice

$$11\ \frac{3}{5}+6\ \frac{4}{15}$$

• $$17\ \frac{2}{3}$$

• $$\frac{13}{15}$$

• $$17\ \frac{13}{15}$$

• $$17\ \frac{7}{15}$$

Multiple Choice

If your answer has an improper fraction, you will need to regroup!

$$9\ \frac{3}{4}+8\ \frac{3}{4}$$

• $$17\ \frac{3}{4}$$

• $$19\ \frac{2}{4}$$

• $$18\ \frac{2}{4}$$

• $$17\ \frac{2}{4}$$

Multiple Choice

If your answer has an improper fraction, you will need to regroup the answer!

$$2\ \frac{6}{8}+5\ \frac{3}{4}$$

• $$8\ \frac{4}{8}$$

• $$7\ \frac{4}{8}$$

• $$8\ \frac{1}{8}$$

• $$7\ \frac{1}{8}$$

1. Stack up the mixed numbers.

2. Subtract the whole numbers.

3. Find a common denominator and subtract the fractions.

​

​Subtracting Mixed Numbers is the same as Adding!

Multiple Choice

$$4\ \frac{3}{4}-1\ \frac{2}{4}$$

• $$3\ \frac{1}{8}$$

• $$6\ \frac{1}{4}$$

• $$3\ \frac{1}{4}$$

• $$4\ \frac{1}{4}$$

Multiple Choice

$$7\ \frac{8}{9}-5\ \frac{1}{3}$$

• $$2\ \frac{5}{9}$$

• $$2\ \frac{7}{9}$$

• $$5\ \frac{5}{9}$$

• $$1\ \frac{7}{9}$$

Multiple Choice

$$12\ \frac{5}{6}-7\ \frac{1}{3}$$

Hint: you may need to put your answer in simplest form!

• $$6\ \frac{4}{6}$$

• $$5\ \frac{4}{6}$$

• $$5\ \frac{1}{2}$$

• $$6\ \frac{1}{6}$$