Arithmetic

Question 1

What are integers?

Answer 1

{…, -2, -1, 0, 1, 2}

Question 2

Positive integers are

Answer 2

greater than 0

Question 3

negative integers are

Answer 3

less than 0

Question 4

0 is

Answer 4

neither positive or negative

Question 5

When integers are added, subtracted, multiplied or divided the result is always

Answer 5

an integer

Question 6

The sum of two positive integers is

Answer 6

positive

Question 7

The sum of two negative integers is

Answer 7

positive

Question 8

The sum of a positive integer and negative integer is

Answer 8

negative

Question 9

When integers are multiplied, each of the multiplied integers is called a ______ or _____ of the resulting product.

Answer 9

factor or divisor

Question 10

The product of two even integers is an

Answer 10

even integer

Question 11

The product of two odd integers is an

Answer 11

odd integer

Question 12

The product of an even integer and an odd integer is an

Answer 12

even integer

Question 13

What is a prime number?

Answer 13

an integer greater than 1 that only has two positive divisors: 1 and itself.

Question 14

First 10 prime numbers

Answer 14

2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Question 15

What is a prime divisor?

Answer 15

an integer greater than 1 or the product of factors that are prime.

Question 16

What is a composite number?

Answer 16

an integer greater than 2 that is not prime.

Question 17

The first 10 composite numbers are

Answer 17

4, 6, 8, 9, 10, 12, 14, 15, 16, 18

Question 18

Top of fraction

Answer 18

Numerator

Question 19

Bottom of fraction

Answer 19

Denominator

Question 20

When adding fractions with same denominator, you ____ the numerators and _____ the denominator

Answer 20

add the numerators and keep the same denominators

Question 21

When adding fractions with different denominator, you

Answer 21

1) find common denominator (common multiple of two denominators)
2) convert both fractions to equivalent fractions with the same denominator
3) add numerators and keep common denominator

Question 22

To multiply fractions __________ the two numerators and ____ the two denominators.

Answer 22

Multiply the two numerators and the two denominators

Question 23

To divide one fraction by another

Answer 23

1) invert the second fraction (it’s reciprocal-flip it)

2) multiply the first fraction by the inverted fraction

Question 24

What is a mixed number?

Answer 24

integer and fraction

Question 25

Convert mixed number to a fraction

Answer 25

1) convert integer to fraction with same denominator | 2) add to existing fraction

Question 26

What are exponents?

Answer 26

repeated multiplication of a number by itself

Question 27

squaring

Answer 27

exponent is 2

Question 28

when negative numbers are raised in exponents, the result

Answer 28

can be positive or negative

Question 29

Negative number raised to even exponent

Answer 29

positive

Question 30

negative number raised to an odd exponent

Answer 30

negative

Question 31

exponent zero

Answer 31

undefined

Question 32

negative exponents

Answer 32

make it 1/ the base and square

Question 33

What is a square root?

Answer 33

r^2=2

Question 34

All positive numbers

Answer 34

have two square roots | one positive, one negative

Question 35

square root of 0 is

Answer 35

0

Question 36

all negative numbers

Answer 36

have one square root

Question 37

absolute value

Answer 37

distance between a number and 0 on the number line.

Question 38

/3/=

Answer 38

3

Question 39

/-3/=

Answer 39

3

Question 40

/x/=

Answer 40

x

Question 41

/-x/=

Answer 41

x

Question 42

/0/=

Answer 42

0

Question 43

value of any nonzero number is

Answer 43

positive

Question 44

r+s=

Answer 44

s+r

Question 45

rs=

Answer 45

sr

Question 46

(r+s)+t=

Answer 46

r+(s+t) and | rs)t=r(st

Question 47

r(s+t)=

Answer 47

rs+rt

Question 48

r+0=

Answer 48

r

Question 49

(r)(0)=

Answer 49

0

Question 50

(r)(1)=

Answer 50

r

Question 51

rs=0

Answer 51

r=0 s=0 or both

Question 52

Division by 0 is

Answer 52

undefined

Question 53

If both r and s are positive then

Answer 53

r+s and rs are positive

Question 54

If both r and s are negative then

Answer 54

r+s is negative and rs is positive

Question 55

If r is positive and s is negative then

Answer 55

rs is negative

Question 56

/r+s/

Answer 56

triangle inequality

Question 57

/r//s/=

Answer 57

/rs/

Question 58

If r>1 then

Answer 58

r^2>r

Question 59

If 0

Answer 59

s^2

Question 60

What is a ratio?

Answer 60

expresses the relative size of two numbers, usually in a fraction.

Question 61

What is a proportion?

Answer 61

equation relating to ratios. | Solve by cross multiplication.

Question 62

What is a percent?

Answer 62

ratios that are used to represent parts of a whole (of 100).

Question 63

0.01%

Answer 63

0.01/100=0.0001

Question 64

Can be converted to a fraction or decimal by

Answer 64

dividing part by whole

Question 65

find 30% of 350

Answer 65

30/100 = x/350

Question 66

15 is 60% of what number?

Answer 66

15/x = 60/100

Question 67

percent increase

Answer 67

amount of increase (larger - smaller)/ base (smaller number

Question 68

percent decrease

Answer 68

amount of decrease (larger-smaller)/base (larger number)