pre algebra

Question 1

natural #’s

Answer 1

1, 2, 3, ,4 ….

Question 2

whole #’s

Answer 2

0, 1, 2, 3, …..

Question 3

standard form

Answer 3

322

Question 4

place value

Answer 4

position of digit in a number is called

Question 5

period

Answer 5

group of three digits is called

Question 6

expanded form

Answer 6

300 + 20 + 2

Question 7

words used when adding

Answer 7

total, sum

Question 8

words used when subtracting

Answer 8

difference

Question 9

words used when multiplying

Answer 9

product, factor, of

Question 10

words used when dividing

Answer 10

quotient

Question 11

in words

Answer 11

three hundred twenty-two

Question 12

commutative property

only in addition & multiplication

Answer 12

order of addition does not matter
4 + 8 = 8 + 4
9 * 2 = 2 * 9

Question 13

associative property

only in addition & multiplication

Answer 13

grouping does not matter
(3+6) + 2 = 3 + (6+2)
(2 * 3) * 4 = 2 * (3 * 4)

Question 14

multiplication property of zero

Answer 14

a * 0 = 0

Question 15

multiplication property of 1

Answer 15

a * 1 = a

Question 16

distributive property

Answer 16

6(4 + 5) = 6(4) + 6(5)

Question 17

rounding

Answer 17

does not matter unless stated

Question 18

area

Answer 18

a = length * width

don’t forget to square it!!

Question 19

perimeter

Answer 19

sum of sides (length) added together

Question 20

addends

Answer 20

’s that are being added

Question 21

minuend

Answer 21

# you are subtracting from
first # in problem

Question 22

subtrahend

Answer 22

# you are subtracting
after the subtraction sign

Question 23

divisor

Answer 23

# in front of division bracket
# after the division sign
denominator

Question 24

division property of 1

Answer 24

the quotient of any # (except 0) and that same # is 1

the quotient of any # and 1 is that same #

Question 25

division property of zero

Answer 25

quotient of 0 and any # (except 0) is 0 quotient of any # and 0 is not a # - undefined if 0 is in front of division bracket, 0 after division sign or 0 is the denominator

Question 26

exponent

Answer 26

little number after base | number of times base is a factor

Question 27

Order of Operations ~ alway work left to right ~

Answer 27

``` P: grouping symbols first E: exponents M: multiply D: divide A: add S: subtract ```

Question 28

variable

Answer 28

a letter that represents a number and can change

Question 29

constant

Answer 29

stays the same

Question 30

algebraic expression

Answer 30

combination of operations on variables and #s all we do is evaluate expressions; exponents have to be the same to combine, coefficients can be different then it's simplified

Question 31

equations

Answer 31

expression = expression | we solve

Question 32

negative #s

Answer 32

numbers less than 0 | symbol is -

Question 33

integers

Answer 33

..., -3, -2, -1, 0, 1, 2, , ...3

Question 34

>

Answer 34

is greater than

Answer 35

is less than

Question 36

absolute value

Answer 36

number's distance from 0 on the # line the symbol is | | always positive

Question 37

opposites

Answer 37

two numbers that are the same distance from 0 on the # line but are on opposite sides of 0

Question 38

sign stays the same

Answer 38

adding two number that have the same sign

Question 39

change sign

Answer 39

adding different signs. subtract the smaller # from the larger # and keep sign of larger

Question 40

opposite of a negative

Answer 40

is a positive

Question 41

subtracting negatives

Answer 41

is adding and keeping the - sign

Question 42

positive integers

Answer 42

if signs are the same | multiplying & dividing

Question 43

negative integers

Answer 43

if signs are different | multiplying & dividing

Question 44

addition property of equality

Answer 44

a = b a + c = b + c a - c = b - c

Question 45

multiplication property of equality

Answer 45

a = b a * c = b * c a / c = b / c

Question 46

average

Answer 46

sum of #s divided by # of #s

Question 47

signed #s

Answer 47

positive, negative and 0

Question 48

numerical coefficient

Answer 48

number factor of a variable term

Question 49

term

Answer 49

addends of an algebraic expression

Question 50

like terms

Answer 50

exact same terms, can have different numerical coefficients

Question 51

us to meter

Answer 51

``` 10oz estimates 28 g 2.2 lbs estimates 1 kg 1 qt estimates 1 L 1 yd estimates 1 m 6.2 mi estimates 10 km ```

Question 52

expressions

Answer 52

combine like terms, there is no = | variables with their components have to be the same, coefficients can be different

Question 53

ratios

Answer 53

the quotient of two quantities

Question 54

rates

Answer 54

compare different kinds of quantities

Question 55

unit rate

Answer 55

a rate with a denominator of 1

Question 56

proportions

Answer 56

states that two ratios are equal | cross multiply to see if true

Question 57

square of a #

Answer 57

the # times itself

Question 58

square root

Answer 58

reverse process of squaring | uses a radical sign

Question 59

pythagorean theorem

Answer 59

length of the legs of right triangle equal the hypotenuse | all squared

Question 60

congruent triangles

Answer 60

same shape and same size

Question 61

similar triangles

Answer 61

same shape but not necessarily the same size

Question 62

percent proportion

Answer 62

amount / base = percent

Question 63

precent of increase

Answer 63

equals amount of increase / original amount

Question 64

precent of decrease

Answer 64

equals amount of decrease / original amount

Question 65

sales tax

Answer 65

equals tax rate * purchase price

Question 66

total price

Answer 66

equals purchase price + sales tax

Question 67

commission

Answer 67

equals commission rate * sale

Question 68

amount of discount

Answer 68

equals discount rate * original price

Question 69

sale price

Answer 69

equals original price - amount of decrease

Question 70

simple interest

Answer 70

I = P * R * T