Chapter 0

Question 1

Perimeter of a Square

Answer 1

P=4s

Question 2

Perimeter of a Rectangle

Answer 2

P=2l+2w

Question 3

Circumference of a Circle

Answer 3

C=(3.14)d or C=2(3.14)r

Question 4

Area of a Square

Answer 4

A=s x s

Question 5

Area of a Rectangle

Answer 5

A=l x w

Question 6

Area of a Triangle

Answer 6

A = 1/2 x b x h

Question 7

Area of a Circle

Answer 7

A=(3.14)r x r

Question 8

perimeter

Answer 8

distance around the figure

Question 9

circumference

Answer 9

perimeter of a circle

Question 10

area

Answer 10

number of square units needed to cover the figure

Question 11

tree diagram

Answer 11

a display that uses branches to represent combinations of items

Question 12

coordinate plane

Answer 12

formed by a horizontal number line (x-axis) and a vertical number line (y-axis)

Question 13

origin

Answer 13

the point where these two lines intersect

Question 14

ordered pair

Answer 14

a set of two numbers that describes the location of a point in a plane

Question 15

estimate

Answer 15

to find an approximate answer to a problem instead of finding an exact answer

Question 16

rounding

Answer 16

replacing a number with another number that is close in value to the original number but is faster and simpler to calculate with

Question 17

compatible numbers

Answer 17

two or more numbers that you can calculate with mentally

Question 18

overestimate

Answer 18

an estimate greater than the actual answer

Question 19

underestimate

Answer 19

an estimate less than the actual answer

Question 20

factor

Answer 20

a number that divides into another number with no remainder

Question 21

divisible

Answer 21

-fill in later-

Question 22

composite number

Answer 22

has more than two factors

Question 23

prime number

Answer 23

has only two factors