Module 2

Front

What is the formula to calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 56% of 400, calculate 400 * 0.56 = 224.

Tags

CCSS.6.RP.A.3C

Front

How do you convert a mixed number to a decimal?

Back

To convert a mixed number to a decimal, divide the numerator by the denominator and add the result to the whole number. For example, 1 5/8 = 1 + (5 ÷ 8) = 1 + 0.625 = 1.625.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Front

What is 700% expressed as a decimal?

Back

700% expressed as a decimal is 7.00. To convert a percentage to a decimal, divide by 100.

Front

How do you find the total number of items if a part is known?

Back

To find the total number of items when a part is known, divide the part by the percentage (in decimal form). For example, if 168 doughnuts represent a certain percentage of the total, use the formula: Total = Part / Percentage.

Tags

CCSS.6.RP.A.3C

Front

What is the relationship between percentages and fractions?

Back

Percentages are a way of expressing a fraction out of 100. For example, 25% is equivalent to the fraction 25/100, which simplifies to 1/4.

Front

How do you calculate the percentage increase or decrease?

Back

To calculate percentage increase, subtract the original value from the new value, divide by the original value, and multiply by 100. For decrease, the same formula applies.

Tags

CCSS.6.RP.A.3C

Front

What is the process to solve for an unknown in a percentage equation?

Back

To solve for an unknown in a percentage equation, set up the equation based on the percentage formula: Part = Total * Percentage. Rearrange to find the unknown.

Tags

CCSS.6.RP.A.3C

Front

How do you express a fraction as a percentage?

Back

To express a fraction as a percentage, divide the numerator by the denominator, then multiply by 100. For example, 3/4 = (3 ÷ 4) * 100 = 75%.

Front

What is the significance of the denominator in a fraction?

Back

The denominator indicates the total number of equal parts into which a whole is divided. It is crucial for understanding the value of the fraction.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

How do you convert a decimal to a percentage?

Back

To convert a decimal to a percentage, multiply the decimal by 100 and add the percent sign. For example, 0.625 = 0.625 * 100 = 62.5%.