Math 6/7 Unit 4 Learning Check #1: Ratios & Unit Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

How do you find a unit rate?

Back

To find a unit rate, divide the quantity by the number of units. For example, if 50 boxes cost $45, the unit rate is $45 ÷ 50 = $0.90 per box.

Front

If 5 hot dogs are needed for 3 people, how many hot dogs are needed for 9 people?

Back

15 hot dogs. (5 hot dogs / 3 people) * 9 people = 15 hot dogs.

Front

What is the fastest reading rate?

Back

The fastest reading rate is determined by calculating the number of pages read per minute. For example, Rylynn reads 16 pages in 8 minutes, which is 2 pages per minute.

Front

What does it mean if a ratio is 4 to 5?

Back

It means for every 4 units of one quantity, there are 5 units of another quantity.

Front

How do you scale a ratio?

Back

To scale a ratio, multiply or divide both parts of the ratio by the same number. For example, scaling the ratio 2:3 by 2 gives 4:6.

Front

What is a unit rate in the context of cost?

Back

A unit rate in cost is the price per single unit of an item, calculated by dividing the total cost by the number of items.

Front

If there are 840 people at lunch, how do you find the number of people who ate a specific type of lunch?

Back

Use the ratio of that type of lunch to the total number of people. For example, if the ratio is 1:4 for turkey sandwiches, then 840 ÷ 4 = 210 people ate turkey sandwiches.

Front

Which combination of socks does not fit the ratio of 4 to 5?

Back

24 black socks; 30 white socks. This does not maintain the ratio of 4:5.

Front

What is the purpose of a ratio table?

Back

A ratio table helps to organize and visualize the relationships between different quantities in a ratio.