Grade 7 Math Review

Vocab

100

This is what half the distance across the middle of a circle is called. 

What is the radius? 

200

This is how many degrees are in a right angle

What is 90 degrees? 

300

This is where the origin is located on the coordinate plane

What is (0, 0)? 

400

This is what we call a positive or negative whole number, or zero. 

Hint: There is a big clue above the whiteboard!!! 

What is an integer? 

500

This is a type of graph that always goes through the origin. 

What is a proportional relationship? 

Integer Ops

100

7+5-3

9

200

-11+5+8

2

300

144-:12*(-5)

-60

400

8*(-8)-:(-4)

16

500

7+9-:(-3)*5-8

14

Equations

100

Show your work! 

x+5=12

x=7

200

Show your work! 

x-7=-10

x=-3

300

-3x=-27

x=9

400

x/3=-12

x=-36

500

Final Jeopardy! 

Write an equation to represent the following story. 

A comic book company charges $9.95 to ship out an order of comic books, and charges $1.50 for each comic book, b, that is included in the order. What is the cost, c, for b comic books? 

c = 1.5b+9.95

Fractions and Decimals Ops

100

1/3*1/3

1/9

200

3/4-:1/2

3/2

300

1/4+2/4

3/4

400

4/3-1/2

5/6

500

3.14*2+5.72

12

Formulas

100

This is the formula for the area of a rectangle. 

What is A=Bh or A=lw

200

This is the formula for the area of a circle

What is A=

pir^2

300

This is the formula for finding the area of a triangle.

What is A= 

1/2bh

400

This is the formula for finding the circumference of a circle. 

What is 

c= 2pir

c=pid

500

This is the way ANY proportional relationship can be written as a formula. 

What is y = kx