Download Math Vocabulary - The Frankfort Christian Academy

Math Vocabulary
Lessons 1-7
Number: ____________
Name: ______________________________
Counting Numbers: The numbers we use to count things
Example: 1, 2, 3, 4, 5
Sequence: A list of numbers arranged according to a certain rule
Example: 2, 4, 6, 8… or 5, 10. 15, 20…
Term: A number in a sequence
Example: in the sequence 3, 6, 9, 10, 12… 12 is one of the terms
Digit: Any of the symbols used to write numbers
Example: in our counting system we use the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 to
create all other numbers. The number 3,456 has four digits.
Whole numbers: The counting numbers and zero
Example: 0, 1, 2, 3, 4… are whole numbers. 1 ½, 2 ½, 3 ½ are not whole numbers
Even numbers: Numbers that can be divided by 2 without a remainder
Example: any number ending in 0, 2, 4, 6, or 8 are even numbers
Odd numbers: Numbers that have a remainder of 1 when divided by 2
Example: any number ending in 1, 3, 5, 7, or 9 are odd numbers
Place Value: The value of a digit based on its position within a number
Example: in the number 2,346 the digit 3 stands for three hundred
Expanded Form: A way of writing a number that shows the value of each digit
Example: 3 hundreds, 5 tens, 4 ones
Addend: Any of the numbers added in an addition problem
Example: in the number sentence 3 + 4 = 7 the numbers 3 and 4 are the addends
Sum: The result of addition (the answer to an addition problem)
Example: in the number sentence 3 + 4 = 7 the number 7 is the sum
Commutative property of addition: Changing the order of addends does not change their sum
Example: 3 + 4 = 7, and 4 + 3 = 7
Identity property of addtion: The sum of any number and zero is equal to the initial number
Example: 45 + 0 = 45 (45 keeps its identity)
Algorithm: Any process for solving a mathematical problem
Example: For 4 + 5 + 6 we might look for numbers that equal 10 to make it easier.
Ordinal: Numbers (or words) that describe a position or order
Example: first, second, third, fourth…