Writing Expressions in Multiple Ways (7.EE.2)

Front

What is the expression to calculate the total price including tax if the original price is s dollars and the tax rate is 7.5%?

Back

s + 0.075s

Front

How do you express a 3% decrease in the price of gas originally priced at g dollars?

Back

g - 0.03g

Front

What is the expression for the sale price of an item originally priced at n dollars with a 12% discount?

Back

n - 0.12n

Front

If a phone originally costs p dollars and is discounted by 9%, how do you express the new price?

Back

p - 0.09p

Front

What expression represents the new length of a side of a square if each side is y cm and is reduced by 6%?

Back

0.94y

Front

Define the term 'expression' in mathematics.

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

What does it mean to 'simplify' an expression?

Back

To simplify an expression means to reduce it to its most basic form by combining like terms and performing operations.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not include an equality sign.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (as a decimal). For example, 20% of 50 is 0.20 * 50.

Front

What is the formula to find the total cost after applying a percentage increase?

Back

Total Cost = Original Price + (Percentage Increase * Original Price) or Total Cost = Original Price * (1 + Percentage Increase).