Just a Little More Stuff to Know for 7th Grade!

What is A VARIABLE?

• the weather

• the amount of money in your bank account

• an unknown amount in an equation or expression

Does an ALGEBRAIC EXPRESSION have an equal sign?

• yes

• no

Does an ALGEBRAIC EQUATION have an equal sign?

• yes

• no

What is the INVERSE OPERATION for addition?

• multiplication

• subtraction

• division

• square root

What is the INVERSE OPERATION for multiplication?

• addition

• division

• subtraction

• square root

What do you do when you are SIMPLIFYING AN EXPRESSION?

• You combine like terms until you have the fewest number of terms.

• You find the number that the variable equals.

What does it mean to SOLVE an equation?

• You combine like terms until you get to the least number of terms.

• You use inverse operations to find the value of the variable!

Combine these LIKE TERMS:

3x + 4x + 5 - 2x + 6

• 7x+5

• 1x+11

• 5x+5

• 5x+11

Distribute: 5(n-8)

• 5n-8

• 5n+8

• 5n-40

• 5n+40

When you evaluate, you take out the variable and you put in a value and you solve! Please EVALUATE for n when n=3:

4n+3

• 7

• 15

• 12

• ???