TEAM WORK TUESDAY: Percent, Fractions and Decimals

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 5% of 60, calculate 60 * 0.05 = 3.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator. For example, to convert 77/100 to a decimal, calculate 77 ÷ 100 = 0.77.

Front

What is the average rate of customers per hour if a store sees 120 customers in 8 hours?

Back

To find the average rate, divide the total number of customers by the total hours. So, 120 customers ÷ 8 hours = 15 customers per hour.

Front

How do you evaluate the expression 5a + 2b if a = 3 and b = 7?

Back

Substitute the values of a and b into the expression: 5(3) + 2(7) = 15 + 14 = 29.

Front

What does PEMDAS stand for in order of operations?

Back

PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

How do you solve the expression (5 x 3) - 8 ÷ 2 using PEMDAS?

Back

First, perform the multiplication: 5 x 3 = 15. Then, perform the division: 8 ÷ 2 = 4. Finally, subtract: 15 - 4 = 11.

Front

What is 10% of a number?

Back

To find 10% of a number, divide the number by 10. For example, 10% of 50 is 50 ÷ 10 = 5.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal as a fraction with a denominator of 1, then multiply the numerator and denominator by 10 for each digit after the decimal point. For example, 0.75 = 75/100 = 3/4.

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, 1/2 = 0.5 = 50%.

Front

How do you find the total after applying a percentage increase?

Back

To find the total after a percentage increase, multiply the original amount by the percentage (in decimal form) and add it to the original amount. For example, for a 20% increase on 50: 50 + (50 * 0.20) = 60.