Day 67: Mixed Percent problems

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It represents how much of something there is out of a total.

Front

How do you calculate the percentage of a part compared to a whole?

Back

To calculate the percentage, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

Front

If 17 out of 20 markers are purple, what is the percentage of purple markers?

Back

85% (calculated as (17/20) x 100).

Front

What does it mean when we say 'missing percent'?

Back

'Missing percent' refers to situations where we need to find out what percentage a part is of a whole.

Front

How do you find the total number of items if you know the percentage of a part?

Back

To find the total, divide the part by the percentage (in decimal form) and then multiply by 100. Formula: Total = Part / (Percentage/100).

Front

If 3 goalies make up 20% of a soccer team, how many players are on the team?

Back

15 players (calculated by scaling up from 1 goalie to the total team size).

Front

What is the formula to find the part when you know the whole and the percentage?

Back

Part = (Percentage/100) x Whole.

Front

If 9 students represent 25% of the total students in detention, how do you find the total?

Back

Total = 9 / (25/100) = 36 students.

Front

What does 'missing part' mean in percentage problems?

Back

'Missing part' refers to situations where we need to find out how much a certain percentage of the whole is.

Front

Curtis has finished 20% of his math homework. If he had 10 problems, how many has he finished?

Back

2 problems (calculated as (20/100) x 10).