8th Grade

Simple Equations

100

x+7=5

-2

200

5x=15

3

300

x/5=9

x=45

400

-3m=-18

m=6

500

-10m=20

m=-2

simple equations pt 2

100

x+12=5  

-7

200

3/2+T=1/2

-1

300

5.2=a-.4

a=5.6

400

-.8+r=12.6

r=13..4

500

x/-2=1.4

-2.8

Multi step eq

100

2.5x-13=2

x=6

200

-12=9x-6x+15

x=-9

300

2(1-x)+3=-8

x=6.5

400

3(x+1)=6=-9

x=-6

500

-4(2m+5)-3m=35

m=-5

Multi step eq

100

3w+7=19

w=4

200

4(z+5)=32

3

300

27=3c-3(6-2c)

c=5

400

5h+2(11-h)=-5

h=-9

500

-3=12y-5(2y-7)

y=-19

riddles

100

I’m round, but I’m not a ball. I have layers, but I’m not a cake. I’m in space, but I’m not a star. What am I?

The Earth

200

How many months of the year have 28 days?

All of them

300

Kate’s mother has three children: Snap, Crackle and ___?

Kate

400

What has thirteen hearts, but no other organs?

Deck of Cards

500

There's a one-story house. Everything in the red house is red, the walls are red, the bathroom is red, the floor is red, the kitchen is red, all of the bedrooms are red. So, what color are the stairs?

There are no stairs