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# Our math words

These are Math words we have learned throughout the year.

## Terms

undefined, object
copy deck
product
the answer to a multiplication problem
Expression
a mathematical phrase that uses numbers and operation signs, but not equal signs
sum
the answer to an additon problem
make a ten strategy
changing the number to a multiple of ten and adjusting the other number
Commutative Property of multiplication
the order of the factors is changed, but the product remains the same
Associative Property of multiplication
the grouping of the factors is changed, but the product remains the same
communtative property of addition
when adding, changing the order of the addends does not change the sum
millions
a place to the left of the hundred thousands place
decimal point
a symbol used to separate dollar amounts and cents in money amounts and to separate the ones and the tenths place in a decimal
variable
a letter or symbol that can stand for any unknown number
fact family
a set of related multiplication and division equations using the same numbers
period
a group of three numbers Ex. ones, thousands, and millions
associative property of addition
when adding, changin how the addends are groups does not change the sum
benchmark
a known number of things that help you understand the size or amount of a different number
quotient
the answer to a division problem
decimal
a number with one or more digits to the right of the decimal point
digit
a number
break apart strategy
break numbers apart, add ones and ten separately
front-end estimation
using only the front digits to estimate
equation
a number sentence with an equation sign
multiple
the product of a given number and another whole number
round
to replace a number with another number
inverse operations
opposite operations that undo each other
Zero property of multiplication
the product of 0 and any number is 0
identity property of multiplication
the product of 1 and any number is that number
difference
the answer to a subtraction problem
identity property of addtion
when you add zero to a number, the sum is that number

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