Math by me

Geometry

100

 how do you get radius?

divide the diameter by 2

200

how do you get area?

3.14 * r2

300

how do you get circumference?

3.14*R

400

how do you find the area of a triangle?

base * height divided by 2

500

how do you find the volume of a rectangle?

 Length * Width * Height

Equations

100

2(4x+5) distribute

8x+10

200

5(6x+4) Distribute

30x+20

300

5(4x+9) Distribute

20x+45

400

7(6x+13) Distribute

42x+91

500

12(8x+7) Distribute

 96x+84

  

Percentages

100

What is 50% of 13

6.5

200

What is 30% of 20

6

300

What is 70% of 20

14

400

What is 35% of 60

21

500

What is 70% of 40

28

Unit Rate

100

I want 20 plants I borrowed from a friend but I have to pay him back $5 for each plant how much money do I owe

I owe $100

200

 you want 30 apples they are in packs of 7, how many packs do you need?

5 packs

300

I need 50 hotdogs and they are in packs of 6, how many packs do I need?

I need 9 packs

400

I need 300 balloons, they are in packs of 25 how many packs do I need? 

12 packs

500

there is a party with 27 people and we need pizza, with 8 slices per box. if all 27 people got 2 slices how many boxes do we need?

7 boxes

Inequalities

100

5x+6<15 solve

x is 3 or less

200

10x+4<_ 20 solve

x is 6 or less

300

15x+7>20 solve

x is 0 to infinite