Problems with Ratios

Conclude an introductory lesson on ratios with a short four-question quiz. Starting with two word problems asking young mathematicians to determine the ratios described in real-world contexts, learners must then fill in the missing...

Learners solve eight word problems in which ratios and proportions are used. Examples are shown of writing proportions and using cross multiplication.

Here is another opportunity for math students to apply reasoning to solve real-world problems with ratios. The ratio of the number of votes for two candidates is provided. Your class is asked to use this ratio and information given about...

This is an opportunity for young mathematicians to apply reasoning to solve real-world problems with ratios. Even though there are three candidates for class president, students will only consider two at a time, making the first problem...

This lesson is a bit more challenging, but Sal provides an excellent step-by-step explanation. He uses of different colors to help learners follow the process for solving this problem. As he solves one problem, he poses another and...

In this video, Sal solves a word problem sent in by a listener that has two cyclists riding towards each other over a given amount of time. It is an interesting problem regarding ratios and the relationship between distance, rate, and...

There are 20 kids on a bus, 60% of them have blue backpacks. How many is this? The teacher shows how to solve a percentage word problem using proportion ratios.

The teacher demonstrates how to set up a word problem into a ratio of fractions. There are many ways to solve this equivalent ratios problem and the instructor chooses to find a multiplier to find the missing value.

Organization is the best way to make sure that ratios are set up correctly to be proportional. This video reviews how to solve ratio problems with addition and multiplication, shown in more detail in the prior two videos of this series,...

The language of rates and ratios forms a common thread through this wide-reaching main problem set and its accompanying support work. Learners mix paint, size copies, distribute candy, and shop for good deals throughout these problems....