Page 183 - Math Smart - 7

8.23 Using a calculator to simplify fractions

You will need a scientific calculator with a fraction key either or

Example 3

Use a calculator to express the fraction in its simplest form. Calculator display will show:

Solution Q Utlh A
8
Use the key sequence GDOQQED- 10
So ^ ^
10 ~ 5

Check My
Understanding

O Find the missing number In each pair of equivalent fractions.
O 5 □
a) 5 = 9 b) 24 c) 6 30

7_
□
d) ^ - □ e) 32 f) 12 o
^
a; 4
60
Write each fraction in its simplest form.
a) I b) i c) ^ 10 e) 15
20
33
VS g) t2 h) ^ j) 20
30
What fraction of an hour is each of the following? Write each fraction in its simplest form.
a) ISmin b) 30 min c) 45 min d) 20 min e) 40 min
f) 10 min g) 50 min h) 5 min i) 55 min j) 25 min

o Some of the following fractions can be simplified and some cannot.
Use your calculator to try to write each fraction in its simplest form.

a; 21 b) ^ 0 H d) i e) ^
48
30 17 i) i
f) 48 g) 34 h) i i) ^

Hexominoes are figures you can form using 6 squares that
are of the same size.
i
This rectangle is divided into 4 hexominoes.
-
Give your answers in its simplest form.
a) What fraction of the total area is blue? r- 1
b) What fraction of the total area is red? J
c) What fraction of the total area is green?