7th Grade- Percents

Front

What is the formula to calculate percent of change?

Back

Percent of Change = ((New Value - Old Value) / Old Value) * 100

Front

If Carrie collected 50 cans and then 70 cans, what is the percent of change?

Back

40%

Front

What does it mean when we say '26 is 5% of what number?'

Back

It means we are looking for a number where 5% of it equals 26.

Front

How do you find the original number if you know a percentage of it?

Back

Divide the part by the percentage (in decimal form).

Front

What is 5% expressed as a decimal?

Back

0.05

Front

If an item costs $124.50 and is on sale for 35% off, how do you calculate the sale price?

Back

Sale Price = Original Price - (Original Price * Discount Rate) = $124.50 - ($124.50 * 0.35) = $80.93

Front

What is the decimal equivalent of 0.6?

Back

0.6 is equivalent to 3/5 as a fraction.

Front

How do you convert a decimal to a fraction?

Back

Place the decimal over its place value (e.g., 0.6 = 6/10) and simplify.

Front

What is 65% represented as a fraction?

Back

65% = 65/100 = 13/20 after simplification.

Front

If you have a 20% discount on a $50 item, how much do you save?

Back

You save $10.