Please help me fill in the blanks please!!

Words you can use are in the picture.

1. A comparison of one number to another by division is a _.

2._ name the same comparison.

3. A ratio that compares quantities with different units is a _.

4. A _ is a ratio, or rate, that compares a number to 100

5._ a fraction or a ratio by dividing the numerator and denominator by a common factor.