U1L4:Writing Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that includes numbers, variables, and operation symbols (like +, -, *, /).

Front

What does 'three times a number' mean in algebraic terms?

Back

It means to multiply a variable (usually represented as n) by 3, written as 3n.

Front

How do you represent 'two more than three times a number' algebraically?

Back

3n + 2.

Front

What does 'four less than the product of b and three' mean in algebraic terms?

Back

It means to subtract 4 from the product of 3 and b, written as 3b - 4.

Front

How do you express '5 less than the product of 7 and s' in algebra?

Back

7s - 5.

Front

What does 'half a number x plus 4' translate to in algebraic expression?

Back

½x + 4.

Front

What does 'subtracted from' mean in algebraic expressions?

Back

It indicates that the second term should be subtracted from the first term, often requiring a reversal of the order.

Front

What is the difference between 'less than' and 'subtracted from'?

Back

Both indicate a reversal in order; 'less than' compares two values, while 'subtracted from' specifies which value is being reduced.

Front

How do you write 'the sum of a number x and 5' in algebraic form?

Back

x + 5.

Front

What is the algebraic expression for 'twice a number y'?

Back

2y.