Add: Put numbers together to find how many in all Plus sign (+): The sign that means add Subtract: Take away to find how many are left Minus sign (−): The sign that means subtract Equals (=): Means the same amount as Sum: The answer when you add Difference: The answer when you subtract Number: A word or symbol that tells how many Digit: One of the ten symbols 0 to 9 used to write numbers Zero: The number that means none Even number: A number you can split into two equal groups with none left over Odd number: A number that leaves one left over when you make pairs Greater than (>): Bigger than Less than (<): Smaller than Compare: Look at two things to see which is more, less, or the same More: A larger amount Fewer: A smaller number of things you can count Same: Not different; equal Order: Put numbers or things in a line by size or by rule Count: Say numbers in order to find how many Skip count: Count by jumping over numbers Number line: A line with numbers placed in order, used to count and add Ones: The place on the right in a number Tens: The place next to the ones; each ten is a group of 10 Hundreds: The place that counts groups of 100 Half: One of two equal parts Fourth (quarter): One of four equal parts Whole: All of something, with nothing missing Equal parts: Parts that are exactly the same size Circle: A round shape with no corners Triangle: A shape with 3 sides and 3 corners Square: A shape with 4 equal sides and 4 square corners Rectangle: A shape with 4 sides and 4 square corners Side: A straight edge of a flat shape Corner (vertex): The point where two sides meet Cube: A solid shape like a dice; 6 square faces Sphere: A solid shape shaped like a ball Cone: A solid shape like an ice cream cone Cylinder: A solid shape like a can Pattern: Something that repeats in the same way Measure: Find out how long, tall, heavy or full something is Length: How long something is Height: How tall something is Longer: Having more length Shorter: Having less length Heavier: Weighing more Lighter: Weighing less Inch: A small unit for length; about the width of a thumb Foot: A unit of length equal to 12 inches Penny: A coin worth 1 cent Nickel: A coin worth 5 cents Dime: A coin worth 10 cents Quarter (coin): A coin worth 25 cents Hour hand: The short hand on a clock Minute hand: The long hand on a clock Graph: A picture that shows information so it is easy to compare Tally mark: A mark used to keep count; four lines and a slash make five Before: Comes earlier in order After: Comes later in order Between: In the middle of two things Double: Two times a number; add it to itself Number sentence: A math idea written with numbers and signs Fact family: Add and subtract facts that use the same three numbers Group: A set of things that belong together Row: Things lined up side to side Column: Things lined up top to bottom Free flashcards from Peabody at peabody.kids/flashcards/math-vocab-k-2