Transcript of Fractions Cancelling Down
- 1. FRACTIONS
- This presentation will help you to cancel down fractions to
show them in their lowest form.
Left click on the mouse to reveal the next section
- 2. Cancelling fractions
- To simplify fractions we cancel down to make them easier to
work with.
To cancel we have to divide the top and bottom numbers of a
fraction by the same number
- 3. Cancelling fractions
Cancel this fraction First, find the largest number that will go
into 4 and 8 4
- 4. Cancelling fractions Next, we divide the top and the bottom
by 4
- 5. Cancelling fractions So, No other number will divide in to
the top or bottom so this is its lowest form . We say that the
fractions are equivalent .
- 6. Cancelling fractions We can also cancel in steps Example
Divide by 5 Divide by 5
- 7. Summary These fractions are all equivalent fractions The
fractions For example We cannot cancel down any further - so we can
stop (it is known as the lowest form ). can be cancelled down
to
- 8. Now try these Click on the mouse to reveal the answers. 1 .
2 . 3 . 4. 5 . 6 .
- 9. Now try these Click on the mouse to reveal the answers. In a
group of 500 people 40 have green eyes. What fraction of the total
has green eyes? Divide by 10 Divide by 2
- 10. Now try these Click on the mouse to reveal the answers. A
total of 60 cars were repaired by a garage in a month. 15 of them
were Vauxhalls. What fraction of the total number repaired were
Vauxhalls? Divide by 5 Divide by 3
- 11. For further info
- BBC Bitesize Maths Revision site