Exploring Expressions with Variables

The video tutorial explains how to write expressions using variables. It covers the meaning of 'increased by' as addition, 'less than' as subtraction with reversed order, 'decreased by' as straightforward subtraction, and how to represent division in algebra without using the division sign. Each concept is illustrated with examples to help learners understand the correct order and representation of mathematical operations in expressions.

What does the term 'increased by' signify in algebraic expressions?

• Division

• Addition

• Multiplication

• Subtraction

If H is increased by 56, how would you write it in an algebraic expression?

• H - 56

• 56 - H

• 56 + H

• H + 56

What does the term 'less than' imply in algebraic expressions?

• The order of subtraction is reversed

• The order of addition is reversed

• The order of multiplication is reversed

• The order of division is reversed

How would you write '3 less than D' in an algebraic expression?

• D - 3

• 3 + D

• D + 3

• 3 - D

What does 'decreased by' mean in algebraic terms?

• Subtraction

• Addition

• Division

• Multiplication

How would you write 'A divided by 7' in an algebraic expression?

• 7 / A

• 7 - A

• A * 7

• A / 7