Practical Problems & Percents (SOL 7.CE.1 and 7.CE.2d)

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate 10% of a number?

Back

To calculate 10% of a number, divide the number by 10.

Front

What is the formula to find the total when given a percent of it?

Back

If you know the percent and the part, use the formula: Total = Part / (Percent / 100).

Front

How do you convert a fraction to a percent?

Back

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

Front

What is the first step in solving a word problem involving addition of fractions?

Back

Identify the fractions involved and find a common denominator.

Front

If Alana runs 3 1/2 laps, 4 1/3 laps, and 4 1/2 laps, how do you add these fractions?

Back

Convert each fraction to have a common denominator, then add the numerators.

Front

What does it mean to find a percentage of a quantity?

Back

Finding a percentage of a quantity means calculating how much that percentage represents in terms of the total quantity.

Front

How do you find out how many items correspond to a certain percentage of a total?

Back

Multiply the total number of items by the percentage (in decimal form).

Front

What is the relationship between fractions and percents?

Back

Fractions can be converted to percents, as both represent parts of a whole.

Front

How do you determine how many cakes Mrs. Perrin can bake with 3 ¾ pounds of batter?

Back

Divide the total batter by the amount needed for one cake: 3 ¾ ÷ 1 ¼.