10MAT3 Algebra and Equations

Vocabulary

100

What do we call a letter that is representing an unknown number?

Pronumeral

200

What do we call terms that have the same letter raised to the same power?

Like terms

300

What do we call a number that is being multiplied by a letter? (e.g. what do we call the 5 in 5x?)

Coefficient

400

What do we call a mathematical expression that uses an equals sign?

Equation

500

Define algebra. (I'll give points to definitions that are close enough!)

The part of mathematics where unknown numbers are represented by letters or symbols

Simplifying like terms

100

2x + 5x = 

7x

200

27x - 5x =

22x

300

9x - 30x =

-21x

400

6xy + 12x - 2xy - 4x =

4xy + 8x

500

4x²y - 3xy² + 2 - 4x²y =

-3xy² + 2

Multiplying and dividing

100

2x • 5x =

(• means multiply!)

10x²

200

15y² ÷ 3y =

5y

300

4x³ • 12x⁵ =

(• means multiply!)

48x⁸

400

7(x³)⁴ =

7x¹²

500

12x²y⁴z ÷ 2xy²z =

6xy²

Solving equations

100

Solve

5x = 55

x = 11

200

Solve

x ÷ 8 = 9

x = 72

300

Solve 

2x - 4 = 60

x = 32

400

Solve

3x + 9 = 30

x = 7

500

Solve

3x + 10 = 2x

x = -10

Do you know me?

100

How many years have I been teaching?

This is my first!

200

What state do I support in the State of Origin?

UP THE BLUES 💙

300

How do you spell my last name?

Micallef

400

What sport do I play?

Soccer ⚽️

500

How old am I?

23