The document discusses ratios and how to express them in different formats. Ratios can be expressed using a colon, "to", or as a fraction. They can compare parts to parts (part-to-part ratios) or parts to the whole (part-to-whole ratios). Examples are given of simplifying ratios by finding the greatest common factor and converting ratios to their simplest form.

5. Using the ":" (colon)to
separate the values: 6:8
Instead of the ":" you
can use the word "to“
or “is to”:
6 to 8 or 6 is to 8
Or write it like a
fraction:
6
8

6. Example:
4 : 5 is the same as 4×2 : 5×2 = 8 : 10

7. "Part-to-Part" and "Part-to-Whole" Ratios
The examples so far have been "part-to-part"
(comparing one part to another part).
But a ratio can also show a part
compared to the whole lot.

8. Example: There are 5 pups, 2 are boys, and 3 are girls.
Part-to-Part:
The ratio of boys to girls is 2:3
or 2/3
The ratio of girls to boys is 3:2
or 3/2
Part-to-Whole:
The ratio of boys to all pups is
2:5 or 2/5
The ratio of girls to all pups is
3:5 or 3/5

9. 4 3:
3 4:
3 7:
4 7:

10. How to simplify Ratios?

14. 2/7is the
reciprocal of 7/2
Simplest form

15. 36 ÷ 18 = 2
90 ÷18 = 5
18 is their
GCF
SIMPLEST FORM

16. WHAT IS THE GCF OF 45 and 50?

17. Lets review:
It is the comparison between two
quantities?
It is the numbers in Ratio?