1. Fractions - zlomky
7. ROČNÍK ZÁKLADNÍ ŠKOLY

2. Fractions We divide a whole into identical parts One ninth
The picture is cut into 9 identical parts
One ninth
vlastní obrázek autora prezentace, vytvořen v GIMPu

3. Fractions How many parts is the picture divided into? quarters
zdroj obrázku:
Dividing into quarters means to divide something into four identical parts.

4. Fractions DENOMINATOR A fraction is a part of a whole NUMERATOR
FRACTION LINE
Obrázek: vlastní kresba
DENOMINATOR

5. Fractions One Half One Quarter
Draw it:
One Quarter
Draw it:
The top number tells us how many parts you have and the bottom number tells us how many parts the whole was divided into

6. Expanding Fractions
Expanding a fraction by a number different from 0 means multiplying the numerator and also the denominator by this number.
The fraction expands by
Obrázek: vlastní kresba
The value of the fraction is the same! = Equivalent fraction
We divided each part into 2 parts only.

7. Expanding Fractions
Expanding by the number 2 (dividing a sheet of paper)
Obrázek: vlastní kresba

8. Expanding Fractions Expand fractions by the number 4
Obrázek: vlastní kresba

9. Count on the interactive board
Expand fractions by the number 3
Expand fractions by the number 5
Obrázek: vlastní kresba

10. Cancelling Fractions
Cancelling a fraction means dividing the top number (numerator) and the bottom number (denominator) by the common factor.
The fraction cancelled by
Obrázek: vlastní kresba
The value of the fraction is the same! = Equivalent fraction

11. Cancelling Fractions Cancel fractions by the number 4
Obrázek: vlastní kresba

12. Count on the interactive board
Cancel fractions by the number 3
Cancel fractions by the number 5
Obrázek: vlastní kresba

13. Try it yourself!