Lesson 4 Simplifying fractions

Which fraction is not in its simplest form?

• $\frac{1}{2}$

• $\frac{2}{3}$

• $\frac{5}{10}$

• $\frac{7}{8}$

What are the factors of 16?

• 1, 2, 4, 8

• 1, 2, 4, 6, 12

• 1, 2, 4, 6, 8

• 1, 2, 4, 8, 16

The factors of 24 and 36 are shown:

Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24

Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36

What is the highest common factor?

• 2

• 6

• 12

• 18

• 24

Which of these fractions is not in its simplest form:

•  $\frac{3}{15}$  

•  $\frac{1}{6}$  

•  $\frac{23}{30}$  

•  $\frac{18}{30}$  

•  $\frac{9}{16}$  

 Simplify the fraction  $\frac{8}{10}$ .

•  $\frac{1}{2}$  

•  $\frac{2}{5}$  

•  $\frac{4}{5}$  

•  $\frac{8}{10}$  

Simplify the fraction $\frac{24}{36}$ .

•  $\frac{2}{3}$  

•  $\frac{6}{9}$  

•  $\frac{8}{12}$  

•  $\frac{12}{18}$  

Simplify the fraction $\frac{70}{100}$ .

•  $\frac{2}{3}$  

•  $\frac{3}{4}$  

•  $\frac{7}{10}$  

•  $\frac{35}{50}$  

Simplify the fraction $\frac{35}{50}$ .

•  $\frac{2}{3}$  

•  $\frac{3}{4}$  

•  $\frac{7}{10}$  

•  $\frac{70}{100}$