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4th Math- Vocab

TermDefinition
AREA The amount of space that fills the inside of a two dimensional shape (ex. rectangle or square) LENGTH x WIDTH= AREA (LxW=A)
VOLUME The amount of space that is inside of a 3D shape (ex. Cube) LENGTHxWIDTHxHEIGHT= VOLUME (LxWxH=V)
UNIT FRACTION A single part of a whole. Any fraction in which the numerator is 1. (ex. 1/9 or 1/4)
TENTHS One part out of ten equal parts. Also the first place value position to the right of the decimal. Can be written as a fraction 1/10 or a decimal 0.1
HUNDREDTHS One part out of one hundred equal parts. Also the second place value position to the right of the decimal. Can be written as a fraction 1/100 or a decimal 0.01
DECOMPOSE To break a number down into smaller parts that add up to the original value.
MIXED NUMBER A whole number and a fraction together to represent one value. (ex. 3 2/5)
IMPROPER FRACTION A fraction in which the numerator is larger than the denominator. The value is more than one whole. (ex. 14/5)
QUOTIENT The answer in a division equation.
DIVISOR The number that is being divided by. In the equation 12 ÷ 3 = 4, 3 is the divisor .
DIVIDEND The amount that you want to break up into smaller parts in a division equation. In the equation 36 ÷ 4 = 9, the 36 is the dividend.
REMAINDER The amount left over after dividing a number into equal groups.
MULTIPLES The result of multiplying a number by another number. Also thought of a skip counting. (ex 3,6,9,12,15,18...)
Whole Numbers Any of the numbers 1, 2, 3, 4 and so on 🗑
Vertex The point at which two rays of an angle, or two line segments meet in a polygon, or three or more sides meet in a 3 dimensional shape. 🗑
Straight Angle An angle that measures 180 degrees. 🗑
Rounding Replacing an exact number with another number that tells about how much. 🗑
Right Angle An angle that measures 90 degrees. 🗑
Rectangle A quadrilateral with opposite sides that are equal, and four right angles. 🗑
Obtuse Angle An angle measuring between 90 and 180 degrees. 🗑
Quadrilateral A polygon with four sides. 🗑
Product The answer to a multiplication problem. 🗑
Polygon A 2D, closed figure with 3 or more sides. 🗑
Point An exact location in space. 🗑
Expanded Form Writing the number by adding the value of each digit. 🗑
Written Form Writing a number using only words. 🗑
Standard Form Writing a number by using only digits. 🗑
Place Value How much a digit is worth depending on its place in the number. This determines the value of a digit in a number. 🗑
Perpendicular Lines Lines that intersect to form right angles.
Parallel Lines Lines that are the same distance apart and never meet.
Perimeter The distance or boundary around a figure. Formula for a quadrilateral is L+L+W+W=P
Parallelogram A quadrilateral whose opposite sides are parallel.
number sentence A sentence that is made up of numbers and a relation symbol (=, >, <).
Ray A part of a line with one endpoint that continues forever in the other direction.
line segment A part of a line that ends at two endpoints.
Line A straight path extending in both directions without an endpoint.
Fraction A way to express part of a whole. Has a numerator and denominator.
Equivalent Fractions Two or more fractions that have the same amount.
Denominator The part of a fraction that represents the total number of parts in a whole. (bottom number)
Numerator The part of a fraction that represents the number of parts or pieces you have. (top number)
angle A figure formed by two line segments or rays and having a shared endpoint.
acute angle An angle measuring less than 90 degrees.
Factors A number that is multiplied by another number to find a product.
Prime A number with only two factors 1 and itself.
Composite A number with more than 2 factors.
Sum The answer that you get when you add two or more addends together.
Difference The answer that you get when you subtract two numbers from each other.
Expression A number sentence that does not include an answer.
Equation A number sentence that includes an answer.
Variable A letter in a math equation that replaces a value/ number.
Created by: sab1nc
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