Grade 8 - Number
Standard 8.N.4 - Compare and understand ratios in a word problem.
Included Skills: Ratios
Demonstrate an understanding of ratio and rate. • Achievement Indicators - Express a two-term ratio from a given context in the forms 3:5 or 3 to 5. - Express a three-term ratio from a given context in the forms 4:7:3 or 4 to 7 to 3. - Express a part to part ratio as a part to whole fraction, e.g., frozen juice to water; 1 can concentrate to 4 cans of water can be represented as 1/5 , which is the ratio of concentrate to solution, or 4/5 , which is the ratio of water to solution. - Identify and describe ratios and rates from real-life examples, and record them symbolically. - Express a given rate using words or symbols, e.g., 20 L per 100 km or 20 L/100 km. - Express a given ratio as a percent and explain why a rate cannot be represented as a percent.