Comparing and Scaling

1. Explain what you think each word means when it is used to make a comparison.
a) ratio- what to what

b) percent-` numerator divided by denominator

c) fraction- part to whole

d) difference – SUBTRACTION






2) Give an example of a situation using each concept to compare two quantities.
(150 total seventh graders, 80 girls, 70 boys)
a) ratio-80:70

b) percent-80/150=53% 70/150=46%

c) fraction-80/150 70/150

d) difference- 80-70=10