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118 Cards in this Set
- Front
- Back
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addend
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the name for the numbers that are added in an addition problem
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addition
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the process of finding the total number of items when 2 or more sets are joined
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angle
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this is made of two rays with a common endpoint
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ascending order
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the order of numbers or objects from least to greatest
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associative property
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this is the property in which the same addends (or multiples) can be grouped in different ways and the sum (or product) will be the same
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between
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on object in the center of two other objects
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bisect
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to divide an object into two equal parts
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cent
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a coin; also called a penny
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center
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the name for the point in the middle of a circle that is the same distance from anywhere on the circle
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commutative property
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this is a property in which the order of two or more addends (or multiples) can be changed and the sum (or product) will be the same
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compare
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to determine if two quantities are greater than, equal to, or less than each other
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congruent figures
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figures having the same size and shape
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decimal
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part of a whole; shown with numbers and a decimal point
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decimal point
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a point that separates whole numbers and decimal numbers
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descending order
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refers to numbers or objects that are in order from greatest to least
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difference
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the answer to a subtraction problem
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digital clock
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a clock that shows time with digits and a colon
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digits
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the ten symbols used to write a number
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dividend
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the number that is divided in a division problem
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division
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a process of sharing a number of times to find how many groups can be made
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divisor
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the number that divides the dividend
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dollar
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an amount of money equal to 100 cents/pennies
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dozen
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a collection of twelve objects
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equal parts
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when a set or object is divided into the same parts
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equal sign
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a symbol that shows two amounts have the same value
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equation
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a number sentence that shows two quantities are equal
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equivalent
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sets that have the same value
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estimate
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to find a number that is close to an exact amount
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factor
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a number that is multiplied by another number to find a product
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greater than
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the symbol >; shows the first set is larger than the second set; also more than
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intersecting lines
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lines that cross
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inverse operations
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operations that undo each other; addition and subtraction; multiplication and division
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less than
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the symbol <; shows the first set is smaller than the second set; also fewer
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line
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a straight path that extends in both directions forever
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minus
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the symbol - ; shows subtraction
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multiple
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a product of a whole number and another whole number
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multiplication
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the process of finding the total numbers of objects in equal-sized groups
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period
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A group of 3 digits in a number; separated by commas starting from the right
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place value
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the position of a digit in a number that is used to determine the value of the digit
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plane
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the name for a flat surface that extends forever in all directions
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plus
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the symbol +; shows addition
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polygon
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closed plane figure made up of line segments
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product
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the result of multiplying two numbers
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quarter
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a coin equal to twenty-five cents
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quotient
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the answer in a division problem
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rectangle
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a parallelogram with 4 right angles
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regrouping
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the name for the process of exchanging amounts equal in value to rename a number
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remainder
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the left over amount when a number cannot be divided equally
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round
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to increase or decrease a number to the nearest ten
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similar figures
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figures that have the same shape
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square
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a rectangle/parallelogram with all sides the same length
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subtraction
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the process of taking away objects from a group
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sum
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the answer to an addition problem
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symmetry
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a figure divided along one line
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triangle
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a 3-sided polygon
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vertex
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the name for the corner in a solid figure where three or more edges meet; the name for the endpoints of two rays that from an angle
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whole numbers
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the set of numbers that start with zero
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turn (rotation)
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The change in the position of a figure that moves it around a point
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trapezoid
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a quadrilateral that has exactly one pair of parallel sides.
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transformation
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a move such as a slide
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solid figure (solid)
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a figure that hs 3 dimensions and volume
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slide (translation)
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The change in position of a figure that moves it up
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parallelogram
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a quadrilateral with both pairs of opposite sides parallel
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midpoint
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The point halfway between the endpoints of a line segment
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flip (reflection)
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The change in the position of a figure that gives the mirror image of the figure
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standard form
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a number written with commas separating groups of 3 digits starting from the right; written as the sum of the digits
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word form
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a number written in words using place value
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expanded form
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a way to write a number that shows the place value of each digit; 300,000+40,000+5,000+700+20
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rounding
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a process that tells which multiple of 10; 100; 1
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estimate
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to give an approximate value rather than an exact answer
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minuend
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The number being subtracted from
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subtrahend
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the number being subtracted from the minuend
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ray
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Part of a line that has one endpoint & extends forever in only one direction
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point
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exact location in space
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perpendicular lines
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two lines that intersect to form right angles
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parallel lines
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In a plane, lines that never intersect or cross
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line
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a set of points that goes on forever in two directions
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line segment
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part of a line having two endpoints
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angle
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two rays that have the same endpoint
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circle
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A closed plane figure made up of all the points the same distance from one point called the center
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degree
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a unit of measure for angles
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right angle
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an angle whose measure is 90 degrees
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straight angle
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an angle whose measure is 180 degrees
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obtuse angle
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an angle whose measure is between 90 and 180 degrees
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acute angle
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an angle whose measure is less than 90 degrees
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pentagon
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a polygon with 5 sides
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octagon
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a polygon with 8 sides
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hexagon
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a polygon with 6 sides
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intersecting lines
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lines that pass through the same point
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symmetric figure
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a figure that can be folded inot 2 congruent parts that fit on top of each other
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similar figures
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figures that have the same shape. They may or may not have the same size.
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line of symmetry
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the fold line in a symmetric figure
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Identity Property of Addition
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The property that states: the sum of any number & zero is that number; n + 0 = n
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Identity Property of Multiplication
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The property that states: the product of any number & one is that number; n x 1 = n
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underestimate
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The result of using smaller numbers to estimate a sume or product. The estimate is smaller than the actual answer.
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overestimate
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The result of using larger numbers to estimate a sum or product. The estimate is larger than the actual answer.
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Commutative Property of Multiplication
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The order of factors can be changed and the product remains the same. 3x5=5x3
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Commutative Property of Addition
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The order of addends can be changed & the sum remains the same. 3+7=7+3
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Associative Property of Multiplication
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Factors can be regrouped & the product remains the same.
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Associative Property of Addition
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Addends can be regrouped & the sum remains the same.
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Zero Property of Multiplication
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In multiplication, the product of a number & 0 is 0.Ex. 8 x 0 = 0
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equivalent decimals
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Decimals which name the same amount.
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equivalent fractions
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Fractions that name the same part of a whole region
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quadrilateral
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a polygon with 4 sides
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tenth
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one part in 10 equal parts
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hundredth
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one part in 100 equal parts
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open figure
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a figure that does not start & stop at the same point; opposite of a closed figure
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180 degrees
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The sum of the measures of the angles of a triangle = ___ degrees
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...its right
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Each place is 10 times the value of the place to ____
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exact
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the actual, precise number (sum, difference, product,quotient); not an estimate
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pattern
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A series of numbers or figures that follow a rule
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reasonableness
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when an answer makes sense
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front-end estimation
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A method of estimating by changing numbers to the place-value of their front-digit & then finding the sum or difference
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coordinate graph
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a grid of vertical and horizontal lines that show the relationship between two variables; (x, y)
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coordinates
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two numbers in an ordered pair; two numbers that locate a point on a grid
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ordered pair
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two numbers that locate a point on a grid;
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x-axis
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the horizontal number line of a coordinate plane;
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y-axis
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the vertical number line of a coordinate plane;
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