Algebra Jeopardy

Forming equations

100

I think of a number. I add 4 and then the result is 7. 

Find the number 

3 

200

When 3 is taken from twice a certain number, the result is 10. 

Find the equation 

2x - 3 = 10 

300

I think of a number and double it.

The answer is 14. 

What is the number

7

400

I think of a number. 

I halve it.  

The result is 8 

What is the number 

16 

500

I think of a number. 

I subtract 2 from it. 

I multiply the result of this by 3.

The result is 9.

Find the equation

3(x - 2) = 9 

Solving Eqns. with one letter

100

x + 4 = 8

4

200

x - 7 = -2 

5

300

3x + 2 = 8 

2

400

3x + 4 = -8 

- 4 

500

- x + 8 = 2 

6 

Solving Eqns. with two letters

100

5x - 2 = 40 - x 

7

200

3x + 3 = 2x + 7 

4

300

3x - 1 = 4x + 5

-6 

400

x + 7 = 2x - 1

8

500

The 3 sides of a triangle are x + 2 , 3x - 9, and 2x + 1 

If the perimeter = 36cm 

find x 

7cm 

Maths Jokes

100

What did the circle say to the square?

You're pointless

200

What’s a math teacher’s favorite place in NYC?

Times square 

300

Why was the equal sign so humble?
 

Because it knew it wasn’t less than or greater than anyone else.

400

Did you hear about the mathematician who’s afraid of negative numbers?
 

He’ll stop at nothing to avoid them

500

What’s the best way to make seven an even number?
 

Take the s out!