Understanding Percent of a Number

The video tutorial from Moomoomath introduces a mnemonic device to solve percent problems using the steps: replace, move, and solve. It provides three examples: calculating 1/2 percent of 44, 3/4 percent of a number, and 3/8 percent of 20. Each example involves converting fractions to decimals, replacing 'of' with multiplication, and solving the equation. The tutorial emphasizes moving the decimal correctly and provides detailed calculations for each example.

What is the first step in the mnemonic device introduced for solving percent problems?

• Replace the percent with a decimal

• Multiply the numbers

• Solve the equation

• Move the decimal point

How do you convert 1/2 percent into a decimal?

• Divide 1 by 2

• Subtract 1 from 2

• Multiply 1 by 2

• Add 1 and 2

What is the result of 1/2 percent of 44?

• 22

• 2.2

• 220

• 0.22

What is the decimal equivalent of 3/4?

• 1.0

• 0.75

• 0.5

• 0.25

What is the result of 3/4 percent of a number when calculated in the example?

• 160

• 1.6

• 16

• 0.16

How do you convert 3/8 into a decimal?

• 0.625

• 0.875

• 0.5

• 0.375

What is the result of 3/8 percent of 20?

• 0.075

• 7.5

• 75

• 0.75

What operation replaces 'of' in the mnemonic device?

• Subtraction

• Division

• Addition

• Multiplication

What is the purpose of moving the decimal point in the mnemonic device?

• To increase the number

• To decrease the number

• To ensure correct placement in the final answer

• To make the number a whole number

What is the final step in the mnemonic device for solving percent problems?

• Replace

• Move

• Solve

• Check