Math First 12 Chapt

Front 1

Addends

Back 1

The numbers that are added together to find a sum

Front 2

array

Back 2

a way of displaying objects in rows and columns

Front 3

associative property of addition

Back 3

addends can be regrouped and the sum remains the same

Front 4

associative property of multiplication

Back 4

factors can be regrouped and the product remains the same.

Front 5

benchmark fractions

Back 5

fractions that are commonly used for estimation (1/4, 1/3, 1/2, etc.)

Front 6

breaking apart

Back 6

mental math method used to rewrite a number as the sum of numbers to form an easier problem

Front 7

common factor

Back 7

A factor that two or more numbers have in common

Front 8

Cummutative property of addition

Back 8

numbers can be added in any order and the sum remains the same

Front 9

commutative property of multiplication

Back 9

factors can be multiplied in any order and the product remains the same

Front 10

compare

Back 10

to decide if one number is greater than or less than another number

Front 11

compensation

Back 11

choosing numbers close to the numbers in a problem to make the computation easier and then adjusting the answer for the numbers chosen

Front 12

Composite number

Back 12

A whole number greater than 1 that has more than two factors

Front 13

compatible numbers

Back 13

numbers that are easy to compute mentally

Front 14

denominator

Back 14

the number below the fraction bar in a fraction. The total number of equal parts in all

Front 15

Difference

Back 15

The answer when subtracting two numbers

Front 16

Digits

Back 16

The symbols used to write a number 0,1,2,3,4,5,6,7,8,9

Front 17

distributive property

Back 17

breaking apart problems into two simpler problems (3x21) = (3x20) + (3x1)

Front 18

divide

Back 18

An operation to find the number in each group or the number of equal groups

Front 19

dividend

Back 19

the number to be divided

Front 20

divisible

Back 20

can be divided by another number without leaving a remainder.

Front 21

divisor

Back 21

the number by which another number is divided.

Front 22

equation

Back 22

a number sentence that uses the equal sign to show that two expressions have the same value.

Front 23

equivalent

Back 23

numbers that name the same amount

Front 24

equivalent fractions

Back 24

fractions that name the same region, part of a set, or part of a segment

Front 25

expanded form

Back 25

a number written as the sum of the values of its digits.

Front 26

fact family

Back 26

a group of related facts using the same set of numbers

Front 27

factors

Back 27

the numbers multiplied together to find a product

Front 28

fraction

Back 28

a fraction is a symbol, such as 2/3 used to name a part of a whole a part of a set, a location on a number line or a division of whole numbers

Front 29

front end estimation

Back 29

a way to estimate a sum by adding the first digit of each addend and adjusting the result based on the remaining digits.

Front 30

identity property of addition

Back 30

the sum of any number and zero is that number

Front 31

Identity property of multipliation

Back 31

the product of any number and one is that number

Front 32

Inequality

Back 32

a number sentence that uses the greater than or the less than sign to show that two expressions do not have the same value

Front 33

inverse operations

Back 33

operations that undo each other. ex. adding 6 and subtracting 6

Front 34

multiple

Back 34

The product of a given factor and any whole number.

Front 35

number expression or numerical expression

Back 35

an expression that contains numbers and at least one operation.

Front 36

numerator

Back 36

the number above the fraction bar in a fraction

Front 37

partial products

Back 37

product found by breaking one factor in a multiplication problem into ones, tens hundreds and so on and then multiplying each of these by the other factor.

Front 38

period

Back 38

in a number, a group of three digits, separated by commas, starting from the right

Front 39

place value

Back 39

the value given to the place a digit has in a number.

Front 40

prime number

Back 40

a whole number greater than 1 that has exactly two factors, 1 and itself.

Front 41

product

Back 41

the answer to a multiplication problem

Front 42

quotient

Back 42

the answer to a division problem

Front 43

repeating pattern

Back 43

a pattern that is made up of shapes or numbers that form a part that repeats

Front 44

rounding

Back 44

replacing a number with a number that tells about how many or how much.

Front 45

simplest form

Back 45

a fraction in which the numerator and denominator have no common factors other than 1

Front 46

solution

Back 46

the value of the variable that makes an equation true

Front 47

solve

Back 47

find a solution to an equation

Front 48

sum

Back 48

the result of adding numbers together

Front 49

underestimate

Back 49

an estimate that is less than the exact answer

Front 50

unit fraction

Back 50

a fraction with a numerator of 1

Front 51

word form

Back 51

a number written in words. example, four thousand, six hundred, thirty-two

Front 52

zero property of multiplication

Back 52

the product of any number and zero is zero.

Front 53

improper fraction

Back 53

A fraction in which the numerator is greater than or equal to the denominator

Front 54

mixed number

Back 54

A number that has a whole number and a fraction