SB-RP Vocabulary

8. a ratio that relates a part of the whole to the whole; example, there are 12 boys in a class of 21 students, the ratio of boys to students in the class is 12 to 21, or 12:21
10. two number lines used to represent the two quantities in a ratio to find equivalent ratios
13. the comparison of two equal ratios; example: oranges are sold in a bag of 5 for $2, the ratio of oranges to their cost is 5:2 or 5/2, I can find the cost of 20 oranges by setting up a proportion, 5/2 = 20/x
14. per hundred; the hundredths place; a ratio whose second term is 100 (x/100); how many units out of 100; symbol %; example: ½ = 0.5 = 50% and ¼ = 0.25 = 25%

1. fractions that have the same decimal form; numerator and denominator can be simplified or multiplied by the same number or constant
2. a ratio that relates two parts of the same whole; example: a class has 12 boys and 9 girls; the ratio of boys to girls is 12 to 9, or 12:9
3. a ratio that has a number related to 1; example, there is a ratio of red cars to blue cars of 2:1, which is read as 2 to 1
4. a proportion that shows two ratios as being equivalent; example: ¼ = 8/32, ⅓ = 6/18
5. the multiplicative (multiplication) relationship between two quantities; compares two quantities; examples: can be written: 15 to 17, 15:17, Or 15/17
6. a comparison of two quantities that have different units of measure; example: given 1 in. = 2.54 cm, how many centimeters are in 6 inches?
7. a rate where a value is 1; example; a car travels 75 miles in 3 hours; the rate, or constant speed, of the car is 25 miles per 1 hour
9. drawing strategies used to create a numerical operation from a written description; they are also called bar models or strip diagrams
11. ratios that represent the same fractional number, value, or measure
12. price per unit; a rate where a value is 1; example: 36 sodas in a case cost $11.38, what is the cost of each can of soda? $11.88/36 cans = x/1 can; x= 0.33 cents per can