Basic Arithmetic Operations and Percentages

This tutorial explains how to use proportions to solve percentage problems. It covers four examples: calculating 24% of 250, 80% of 360, finding what percent 45 is of 75, and determining what percent 216 is of 450. The tutorial demonstrates how to set up proportions, cross-multiply, and solve for unknowns, providing a clear method for solving percentage problems using fractions.

What is the first step in using proportions to solve percentage problems?

• Write a decimal

• Write a percentage

• Write an equation

• Write a fraction bar

How do you express 24% as a fraction?

• 24 out of 1000

• 24 out of 100

• 24 out of 250

• 24 out of 10

What does the word 'of' indicate in a percentage problem?

• Numerator

• Denominator

• Multiplier

• Subtractor

What is the result of 24 multiplied by 250?

• 8000

• 6000

• 5000

• 7000

How do you quickly divide a number by 100?

• Subtract 100

• Add two zeros

• Move the decimal point two spaces to the right

• Move the decimal point two spaces to the left

What is the equivalent of 60 out of 250 in percentage?

• 24%

• 60%

• 36%

• 48%

What is the first step in solving for 80% of 360?

• Divide 360 by 80

• Multiply 80 by 360

• Express 80% as a fraction

• Express 80% as a decimal

What is the product of 80 multiplied by 360?

• 24,000

• 36,000

• 18,000

• 28,800

What is the value of X when 28,800 is divided by 100?

• 2.88

• 28.8

• 2880

• 288

What does the word 'is' indicate in a percentage problem?

• Multiplier

• Numerator

• Subtractor

• Denominator