Mathematics Flashcard: Converting and Finding Percents & Percentages

Front

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator (top number) by the denominator (bottom number). For example, 5/8 = 5 ÷ 8 = 0.625.

Front

What is the decimal equivalent of 1/4?

Back

0.25

Front

How do you find a percentage of a number?

Back

To find a percentage of a number, multiply the number by the percentage (as a decimal). For example, to find 20% of 50, calculate 50 x 0.20 = 10.

Front

What is the decimal equivalent of 3/4?

Back

0.75

Front

How do you convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100 and add the percent symbol. For example, 0.85 x 100 = 85%.

Front

What is 10% of 150?

Back

15

Front

If a shirt costs $40 and is on sale for 25% off, what is the sale price?

Back

$30 (25% of $40 is $10, so $40 - $10 = $30).

Front

What is the decimal equivalent of 7/10?

Back

0.7

Front

How do you calculate the total after a discount?

Back

To calculate the total after a discount, subtract the discount amount from the original price. For example, if the original price is $50 and the discount is $10, the total is $50 - $10 = $40.