Adding and Subtracting Mixed Numbers Lesson Slides

11 Slides • 8 Questions

1

Adding and Subtracting mixed numbers with like denominators

2

When adding and subtracting fractions with the same denominator. . .

Add or subtract the numerators
Denominator STAYS THE SAME

3

Multiple Choice

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

1

$\frac{3}{4}$

2

$\frac{3}{8}$

4

Multiple Choice

$\frac{6}{7}$ - $\frac{1}{7}$ =

1

$\frac{5}{14}$

2

$\frac{5}{7}$

3

$\frac{5}{0}$

5

When adding mixed numbers,

Start with the fraction!
Add the fraction first
Then add or subtract the whole numbers
Then simplify the fraction IF it is an improper fraction

6

7

Multiple Choice

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

1

$5\ \frac{3}{5}$

2

$5\ \frac{3}{10}$

8

Multiple Choice

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

1

$4\ \frac{3}{4}$

2

$4\ \frac{2}{4}$

3

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

9

If you have an improper fraction in your answer. . .

You have to add the wholes to the whole number!!

10

11

Multiple Choice

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

1

5

2

6

3

$5\ \frac{2}{2}$

12

Subtracting mixed numbers can be trickier if you have to regroup!!

Just remember that 1 whole is any fraction with the same numerator and denominator!!

13

Multiple Choice

$1\ -\ \frac{1}{4}=$

1

$\frac{3}{4}$

2

$\frac{1}{4}$

14

To do that, you have to REGROUP the whole.

15

Multiple Choice

$2\ \frac{2}{6}-1\ \frac{4}{6}=$

1

$1\ \frac{2}{6}$

2

$\frac{4}{6}$

3

$1\ \frac{4}{6}$

16

17

18

19

Multiple Choice

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

1

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

2

$2\ \frac{2}{3}$

3

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

Adding and Subtracting mixed numbers with like denominators

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