Everything Maths Grade 10

This means that

10,589= 10 +

5

10

+

8

100

+

9

1000

=

10 000

1000

+

500

1000

+

80

1000

+

9

1000

=

10 589

1000

VISIT:

The following two videos explain how to convert decimals into rational numbers.

Part 1

See video:2DBJatwww.everythingmaths.co.za

Part 2

See video:2DBKatwww.everythingmaths.co.za

Converting recurring decimals into rational numbers EMA

When the decimal is a recurring decimal, a bit more work is needed to write the fractional part of the decimal
number as a fraction.

Worked example 2: Converting decimal numbers to fractions

QUESTION

Write 0, 3 _in the formab(whereaandbare integers).

SOLUTION

Step 1: Define an equation

Letx=0,33333...

Step 2: Multiply by 10 on both sides

10 x=3,33333...

Step 3: Subtract the first equation from the second equation

9 x= 3

Step 4: Simplify

x=

3

9

=

1

3

Chapter 1. Algebraic expressions 9