Proportions

Front

What is a proportion?

Back

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

Front

How do you find the unit rate from a given total cost and quantity?

Back

To find the unit rate, divide the total cost by the quantity.

Front

If a recipe calls for a ratio of 2:1 for ingredients, what does this mean?

Back

This means for every 2 parts of the first ingredient, there is 1 part of the second ingredient.

Front

What is the formula to calculate the total amount based on a unit rate?

Back

Total Amount = Unit Rate × Quantity.

Front

How can you set up a proportion to solve for an unknown quantity?

Back

Set up a proportion by creating a ratio from known values and equating it to a ratio that includes the unknown.

Front

What is the relationship between equivalent ratios and proportions?

Back

Equivalent ratios are ratios that express the same relationship, and they form proportions when set equal to each other.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100.

Front

What is the cross-multiplication method used for in proportions?

Back

Cross-multiplication is used to solve proportions by multiplying the numerator of one ratio by the denominator of the other ratio.

Front

If 4 milk chocolates are to every 2 dark chocolates, what is the ratio of milk chocolates to total chocolates?

Back

The ratio of milk chocolates to total chocolates is 4:6, which simplifies to 2:3.

Front

How do you determine the total number of items based on a known quantity and ratio?

Back

Multiply the known quantity by the total parts of the ratio divided by the part corresponding to the known quantity.