A ratio compares two quantities by division, written as 3 to 2, 3:2, or three halves. The order matters: a ratio of boys to girls is not the same statement as girls to boys.
Math Dictionary / Ratio
Ratio
A ratio compares two quantities by division.
Ratios and ProportionsGrade 6Grade 7Grade 8GEDSATACT
What it means
Ratios can be written with words, a colon, or a fraction.
Also called: comparison
Examples
| 3 boys to 5 girls |
| 3:5 |
| 3/5 |
Common mistake
Keep the order of the quantities the same when writing a ratio.
Try one
Question: Write the ratio of 4 red marbles to 6 blue marbles.
Show answer
4:6, or simplified as 2:3.