A letter of the alphabet that represents a number.
What is a variable?
100
2r + r + 3 + 4r
7r + 3
100
10 - 2w + 15 when w = 2
21
100
Simplify aabbabbba
a^4b^5
100
I have x dollars and my brother has 3 times more than me. How much money do we have together?
4x dollars
200
An expression that contains at least one variable.
What is an algebraic expression?
200
-4x + 3 + 6x - 1
2x + 2
200
(5 + w^3 + w) divided by (w + 4) when w = 3
5
200
Simplify (3xy)^2(3x)
27x^3y^2
200
I have 2x dollars and my brother has 3 times more than me. Together we bought a toy that costs $7. How much change did we get back?
8x - 7 dollars in change
300
PEMDAS.
What is the order of operations?
300
5h + 4 - 3 + 10 - 6h + 3h
2h + 11
300
ab^2 when a = 4 and b = 3
36
300
Simplify (2xy)^3(3xy)^2
72(x^5)(y^5)
300
I have 3x dollars and my brother has 4 times more than me. Together we bought a toy that costs $10. We got $20 in change back. How much money did I have in the beginning?
$6
400
One has an equal symbol and the other one doesn't.
What is the difference between an equation and an expression?
400
-5y + 3(2y - 1) + y + 4
2y + 1
400
(ab)^2 - a(3 + b) when a = 3 and b = 4
123
400
Simplify (2x^2)^3 (5x)^2
200x^8
400
I have 2x dollars and my brother has 5 times more than me. Together we bought a toy. We got $10 back in change, which is half of the money my brother started with. How much did the toy cost?
$14
500
When the parentheses is not explicitly expressed, but is there, such as in the numerator of a fraction.
What is implied parentheses?
500
-5yy + 4y(2y - 1) + 6y + 4
3yy + 2y+ 4
500
SORRY, YOU AUTOMATICALLY LOSE 300 POINTS!
=*(
500
(ab)^3(ab^3) - b^2(ab)
(a^4)(b^6) - (a)(b^2)
500
The ratio of 2 sides of an isosceles triangle is 3:4. If the perimeter is 30 inches and the sides of the triangles are whole numbers, what is the length of the longest side of the triangle?