FLASHCARD Percents (Proportions & Equations)

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 calculate the percent of a quantity?

Back

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

Front

What is the formula to find the whole when given a part and a percent?

Back

Whole = Part / (Percent / 100). This formula helps to find the total when you know a part and its percentage.

Tags

CCSS.6.RP.A.3C

Front

If 5 out of 8 socks are white, what percent of the socks are white?

Back

62.5%. Calculation: (5/8) x 100 = 62.5%.

Front

If 8 pairs of socks total, how many pairs are colored if 5 are white?

Back

3 pairs are colored. Calculation: 8 - 5 = 3.

Tags

CCSS.2.OA.A.1

Front

What is 20% of 75?

Back

15. Calculation: (20/100) x 75 = 15.

Tags

CCSS.6.RP.A.3C

Front

How do you find 98% of 200 students?

Back

To find 98% of 200, multiply 200 by 0.98. Calculation: 200 x 0.98 = 196.

Tags

CCSS.6.RP.A.3C

Front

What percent of 40 items were brownies if 18 were brownies?

Back

45%. Calculation: (18/40) x 100 = 45%.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, a/b = c/d.

Tags

CCSS.7.RP.A.2A

Front

How do you solve for an unknown in a proportion?

Back

Cross-multiply the ratios and then solve for the unknown. For example, if a/b = c/d, then a*d = b*c.

Tags

CCSS.7.RP.A.2C