Arithmetic Mastery

Question 1

Rule of Divisibility (3)

Answer 1

3: If the sum of the digits is divisible by 3, the entire integer is a multiple of 3.

Question 2

Rule of Divisibility (6)

Answer 2

6: If the number is both divisible by 2 and 3, it is divisible by 6.

Question 3

Decimal Equivalent: 2/3

Answer 3

0.66 (repeating)

Question 4

Even x Odd =

Answer 4

Even

Question 5

Decimal Equivalent: 1/6

Answer 5

0.2

Question 6

Divisible

Answer 6

Describes a number capable of being divided without a remainder. A number that is divisible by x is also said to be a multiple of x. • 18 is divisible by 1, 2, 3, 6, 9, and 18

Question 7

How do you represent the phrase “what percent”?

Answer 7

Question 8

How do you represent “minus,” “less than,” “subtracted from,” “decreased by,” “reduced by,” and “difference?”

Answer 8

-

Question 9

What is the formula for average rate of speed?

Answer 9

Question 10

Decimal Equivalent: 1/3

Answer 10

0.33 (repeating)

Question 11

Even x Even =

Answer 11

Even

Question 12

Common Factor

Answer 12

A factor shared by two numbers • Factors of 18 are 1 and 18, 2 and 9, and 3 and 6. • Factors of 15 are 1 and 15 and 3 and 5. • The common factors of 15 and 18 are 1 and 3.

Question 13

Rule of Divisibility (4)

Answer 13

4: If the last two digits are a multiple of 4, the entire number is a multiple of 4.

Question 14

Odd x Odd =

Answer 14

Odd

Question 15

Odd + Odd =

Answer 15

Even

Question 16

How do you represent “of,” “times,” or “product?”

Answer 16

X

Question 17

First 10 Prime Numbers

Answer 17

{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, …}

Question 18

Rule of Divisibility (2)

Answer 18

2: If the last digit of a number is even, it is a multiple of 2.

Question 19

How do you represent “per,” “out of,” or “quotient?”

Answer 19

÷

Question 20

Prime Factor

Answer 20

Prime numbers that divide into a larger number without a remainder • Factors of 18 are 1 and 18, 2 and 9, and 3 and 6; the prime factors are 2 and 3

Question 21

Even + Odd =

Answer 21

Odd

Question 22

How do you represent “plus,” “more than,” “added to,” “increased by,” and “sum?”

Answer 22

+

Question 23

Rule of Divisibility (5)

Answer 23

5: If the last digit ends in 0 or 5, the entire number is divisible by 5.

Question 24

How do you represent “What” or “What number”?

Answer 24

variable

Question 25

Decimal Equivalent: 1/5

Answer 25

0.166 (repeating)

Question 26

Decimal Equivalent: 1/8

Answer 26

0.125

Question 27

Decimal Equivalent: 1/2

Answer 27

0.5

Question 28

Even + Even =

Answer 28

Even

Question 29

All Prime Numbers under 100

Answer 29

{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, …} {31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97}

Question 30

Prime Number

Answer 30

An integer that does not have any factors besides itself and 1

Question 31

Decimal Equivalent: 1/3

Answer 31

0.33 (repeating)

Question 32

Rule of Divisibility (9)

Answer 32

9: If the sum of the digits is divisible by 9, the entire integer is a multiple of 9

Question 33

Decimal Equivalent: 3/4

Answer 33

0.75

Question 34

What is the rate formula?

Answer 34

Question 35

What is the formula for combined work problems?

Answer 35

Question 36

How do you represent “is,” “equals,” or “result?”

Answer 36

=

Question 37

Decimal Equivalent: 2/5

Answer 37

0.4

Question 38

Mulitples

Answer 38

An integer that is divisible by another integer without a remainder. (Ex. multiples of 3 include: -3, 3, 6, 9, 12…)

Question 39

Decimal Equivalent: 1/4

Answer 39

0.25