Foundations Percent Proportions HW

Front

What is the decimal equivalent of a percentage?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 6.8% as a decimal is 0.068.

Front

How do you find what percent one number is of another?

Back

To find what percent one number (A) is of another number (B), use the formula: (A / B) * 100. For example, to find what percent 78 is of 450, calculate (78 / 450) * 100.

Front

What is the formula to find the whole when given a percentage of it?

Back

If you know a percentage (P) of a number (X) equals a certain value (V), you can find the whole using the formula: X = V / (P / 100). For example, if 34% of a number is 51, the number is 150.

Front

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

Back

To calculate the percentage of a part (P) relative to a whole (W), use the formula: (P / W) * 100. For example, to find what percent 20 is of 50, calculate (20 / 50) * 100.

Front

What is the relationship between fractions, decimals, and percentages?

Back

Fractions, decimals, and percentages are different ways to represent the same value. For example, 1/10 is equivalent to 0.1 and 10%.

Front

How do you convert a decimal to a percentage?

Back

To convert a decimal to a percentage, multiply the decimal by 100. For example, 0.1 as a percentage is 10%.

Front

What is the formula for finding the percentage increase or decrease?

Back

To find the percentage increase or decrease, use the formula: ((New Value - Old Value) / Old Value) * 100.

Front

How do you find a percentage of a monetary amount?

Back

To find a percentage of a monetary amount, multiply the amount by the percentage (as a decimal). For example, to find 10% of $90, calculate $90 * 0.10.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if 1/2 = 2/4, then these two ratios are in proportion.

Front

How do you solve for an unknown in a percentage problem?

Back

To solve for an unknown in a percentage problem, set up an equation based on the percentage formula and solve for the unknown variable.