Analyze proportional relationships and use them to solve real-world and mathematical problems. Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.
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A multi-step problem requires students to compare unit rates and apply thought in determining the price of shares to be offered in a non-straightforward deal of buyout of a music company.
A task that requires students to apply proportions to determine the an optimum percentage increase over an existing value in the context of computer sales.
In this students students will use percentages to either estimate or determine exactly the tax and tip needed to be left for a waiter given a tax and tip %, along with the cost of the food.
This task requires students to find the unit rate of one rider when meeting in the middle given the total distance between two riders, the unit rate of the other rider and the time taken.
This task is to help students gain an understanding of the inequality of the percent decrease between the larger and smaller value and the percent increase between the smaller and larger value in t...
Given a percentage increase in a segment of a group, and a percentage decrease in another segment, this task requires students to calculate overall percentage change in size of group.
A simple percentage increase mental math task using easy values.
Given a budget, students will be required maximize the number of protein bars and magazines they could buy given a sales tax on the total cost and a consistent ratio requirement.
A real-world context task requiring students to determine an unknown that is proportionally larger by factor to be determined given the other information to deduce it.
This goal of this task is to give students familiarity using the formula for the area of a circle while also addressing measurement error.
This task requires students to solve a multi-step ratio problem that can be approached in many ways, including making a ratio table and building a linear equation, all in the context of the fictiti...
A task whose purpose is to see how well students students understand and reason with ratios, by using a multi-step approach to compute a final ratio in the context of a high school dance.
A real-world problem modelled as a task to give students an opportunity to solve a multi-step percentage problem that can be approached in many ways.
The purpose of this task is for students to calculate the percent increase and relative cost in a real-world context, and also introduce the idea of inflation.
The purpose of this task (a task Abraham Lincoln worked on his teen years) is for students to solve a multi-step problem involving simple interest.
This task requires students to perform a multi-step conversion between two rates, going from meters per second to miles per hour in trying to calculate Usain Bolt's average speed.
A set of 14+ questions created by Khan Academy's David Sissitka.
A set of 10+ questions created by Khan Academy's Marcia Lee.