Math Explorations

Finding value of "X"

100

Find the value of "x"

5x+2=17

X=3

200

4x+(3+7)=18

X=2

300

True or False 

20x+1=41

so x=2

True

400

7x+75=124

x=7

500

True or False 

72x+3=363

so x=7

False

Absolute value

100

what is the absolute value of -18

18

200

what is the absolute value of -7

them add two 

9

300

what is the absolute value of 22

22

400

what is the definition of absolute value?

Absolute value is the distance from zero which is always positive. 

500

Put each number in order from least to greatest.

(-17), 18, (21), 5, (-221), -111

-111, 5,(-17),18,(21),(-221)

Adding negatives

100

-1+2

1

200

-7+16

5

300

-7+10

3

400

-13+(-12)

-25

500

-43+9

-34

Subtracting negative numbers

100

-1-1

-2

200

-7-3

-10

300

-13-(4)

-17

400

-75-2

-77

500

True or False:

Two negatives make a positive when subtracting 

False

Area of a triangle

100

A triangle has a height of 3 and a base of 2 what is the area?

3

200

A acute triangle has a height of 4 and a base of 9 what's is the area. 

18

300

A triangle has a height of 6.2 and a length of 2, the base is 3 what is the area. 

9.3

400

A triangle has a area of 8 the base is 2, what is the height 

4

500

What is the formula for finding the area of a triangle?

A=B(h)*0.5