Solving for y

Y Not

100

3y=18

y=6

200

y/5=19

y=95

300

5y-12=28

y=8

400

4(y+3)=2y+18

y=3

500

7y-4=3(2y+5)

y=19

Slope Goals

100

2y=6x-4

y=3x-2

200

3x+y=12

y=-3x+12

300

4y-8=2x

y=1/2x+2

400

5x-3y=9

y=5/3x-3

500

2(x-3)+4y=10

y=-1/2x+4

Too Many Letters Not Enough Chill

100

y + z = 10

y = 10 − z

200

2y − x = 8

y = 1/2x + 4

300

3y + 2x − z = 7

y = −2/3x + 1/3z + 7/3

400

5x − 4y + 2z = 12

y = 5/4x + 1/2z − 3

500

6y − 3x + 2z = 9

y = 1/2x − 1/3z + 3/2

Math Moves Only

100

Equation: 5x = 25
Question: What should you do first to solve for x?

Divide both sides by 5 

 x = 5

200

Equation: y − 7 = 12
Question: What should you do first to solve for y?

Add 7 to both sides 

y = 19

300

Equation: 3x + 4 = 19
Question: What should you do first to solve for x?

Subtract 4 from both sides

3x = 15

Then divide both sides by 3

x = 5

400

Equation: (1/2)y = 8
Question: What should you do first to solve for y?

Multiply both sides by 2

y = 16

500

Equation: z/3 − 5 = 4
Question: What should you do first to solve for z?

Add 5 to both sides

z/3 = 9 

then multiply both sides by 3

z = 27

Big Brain Energy

100

I’m tall when I’m young and short when I’m old. What am I?

A candle

200

I have keys but no locks. I have space but no room. You can enter but can’t go outside. What am I?

A keyboard

300

What five-letter word becomes shorter when you add two letters to it?  

Short

400

Tom’s father has 4 sons. Three are named North, South, and East. What’s the fourth son’s name?

Tom

500

A mother is 30 years older than her child. In 10 years, the mother will be twice as old as the child. How old is the child now?

20 years old