6.4B

Front

What is a ratio?

Back

A ratio is a relationship between two numbers that shows how many times the first number contains the second.

Front

How do you solve a problem involving ratios?

Back

To solve a ratio problem, you can set up a proportion and cross-multiply to find the unknown value.

Front

If the ratio of large dogs to small dogs is 4:3 and there are 63 dogs total, how do you find the number of small dogs?

Back

First, add the parts of the ratio (4 + 3 = 7). Then, divide the total number of dogs (63) by the total parts (7) to find the value of one part (63 ÷ 7 = 9). Multiply the number of small dog parts (3) by the value of one part (3 × 9 = 27).

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you find the total amount in a mixture based on a ratio?

Back

To find the total amount in a mixture, you can use the ratio to determine the parts of each component and then add them together.

Front

If Felisha mixes 1 1/2 cups of sugar with 6 cups of water, what is the ratio of sugar to water?

Back

The ratio of sugar to water is 1.5:6, which simplifies to 1:4.

Front

What does it mean if a statement says 'half as many'?

Back

It means that the quantity being referred to is 50% of another quantity.

Front

How do you compare rates of two people performing the same activity?

Back

To compare rates, calculate how much each person can do in the same amount of time and then compare those amounts.

Front

If Avery swims 3 laps in 2 minutes, how many laps can she swim in 4 minutes?

Back

Avery can swim 6 laps in 4 minutes (3 laps in 2 minutes means she swims 1.5 laps per minute).

Front

What is the meaning of 'not true' in a statement?

Back

'Not true' means that the statement is incorrect or false.