Operations and Algebraic Thinking
Product
The result of multiplying two or more numbers (e.g., 6 × 7 = 42, where 42 is the product).
Place Value
The value of a digit based on its position in a number (e.g., in 352, the 5 is in the tens place and represents 50).
Numerator
The top number in a fraction, representing how many parts are being counted.
Elapsed Time
he amount of time that has passed between two events.
Line
A straight path extending infinitely in both directions.
Dividend
The number being divided in a division problem (e.g., in 12 ÷ 4 = 3, 12 is the dividend).
Expanded Form
A way to write numbers by showing the value of each digit (e.g., 356 = 300 + 50 + 6).
Equivalent Fractions
Fractions that have the same value but different numerators and denominators (e.g., ½ = 2/4).
Length
The measurement of something from end to end.
Line segment
A part of a line with two endpoints.
Expression
A mathematical phrase that includes numbers, variables, and operations but does not have an equal sign (e.g., 4x + 3).
Rounding
Adjusting a number to the nearest ten, hundred, etc., based on place value rules.
Improper Fraction
A fraction where the numerator is greater than the denominator (e.g., 7/4).
Inch, Foot, Yard, Mile
Standard units of length in the U.S. customary system.
Parallel Lines
Lines that never meet.
Prime Number
A number greater than 1 that has exactly two factors: 1 and itself (e.g., 2, 3, 5, 7).
Regroup
The process of carrying or borrowing in addition and subtraction.
Mixed Number
A number with a whole part and a fraction part (e.g., 2 ½).
Perimeter
The total distance around a shape.
Perpendicular Lines
Lines that intersect at a 90-degree angle.
Input
A number that is put into a function or rule to get an output.
Hundred-thousands
A place value position representing groups of 100,000.
Common denominator
A denominator that two or more fractions share.
Area
The space inside a shape (length × width).
Polygon
A closed shape with straight sides.