Multiplicative Comparison Review

Front

What is a multiplicative comparison?

Back

A multiplicative comparison is when you compare two quantities by using multiplication. For example, saying one quantity is '3 times as much' as another.

Front

If each ride at a festival requires 3 tickets, how do you find out how many rides you can take with a certain number of tickets?

Back

You divide the total number of tickets by the number of tickets required for one ride. For example, if you have 18 tickets, you do 18 ÷ 3.

Front

Zach baked 20 donuts yesterday. If he bakes 5 times as many today, what equation can you use to find out how many he baked today?

Back

n = 5 x 20, where n is the number of donuts baked today.

Front

Maria is 12 years old and is 4 times older than her brother. How do you find her brother's age?

Back

You divide Maria's age by 4. So, 12 ÷ 4 = 3. Her brother is 3 years old.

Front

If a plain ball cap costs $15, how much does a ball cap with a logo cost if it is 3 times as much?

Back

You multiply the cost of the plain cap by 3. So, $15 x 3 = $45.

Front

How do you calculate how many pages Jayden reads if he reads 5 times as many pages as Allie, who reads 10 pages?

Back

You multiply Allie's pages by 5. So, 10 x 5 = 50 pages.

Front

What is the equation to find out how many rides Sam can take with 18 tickets if each ride costs 3 tickets?

Back

The equation is 18 ÷ 3 = n.

Front

If you know that one quantity is 5 times another, how can you express this relationship mathematically?

Back

You can express it as n = 5 x (the other quantity).

Front

What does it mean if something costs 3 times as much?

Back

It means you multiply the original price by 3 to find the new price.

Front

If Maria is 4 times older than her brother, how can you express her brother's age in terms of Maria's age?

Back

You can express it as Brother's age = Maria's age ÷ 4.