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A number divisible by 2. Numbers ending in 0, 2, 4, 6, or 8. even number

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A number NOT divisible by 2. Numbers ending in 1, 3, 5, 7, 9. odd number

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When three or more numbers are multiplied, the product is the same regardless of the grouping of the factors. (2 x 3) x 4 = 24 2 x (3 x 4) = 24 (2 x 4) x 3 = 24 associative property of multiplication also called the Grouping Property

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The numbers added together to form a sum. 7 + 8 = 15 addend sum

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The numbers that are multiplied in a multiplication problem. 3 x 5 = 15 factors product

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sum the answer to an addition problem difference the answer to a subtraction problem product the answer to a multiplication problem quotient the answer to a division problem

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The property that states that changing the order of the factors does not affect the product. Example: 3 x 5 = 15 and 5 x 3 = 15 commutative property of multiplication

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A straight path that extends in both directions without end; marked with an arrowhead at each end. line

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A piece of a line that has two endpoints. line segment

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Two (or more) lines that run the same distance apart at every point and will never intersect. parallel lines

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A line with one end point that extends non-stop in the opposite direction. ray

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A shape formed by two rays that share an endpoint. angle

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The point where: two or more rays share an endpoint. the edges of a solid figure meet. The point at the top of a cone. vertex plural: vertices

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Two or more lines that meet or cross at a point. intersecting lines

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Two lines that intersect and form right angles. perpendicular lines

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protractor Tool used to measure angles.

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90 ° 360 ° 90 ° 180 ° 270° 90 ° A full circle rotation is equal to 360 ° (degrees) When divided into four equal sections, each section is worth 90 ° 1 rotation = 90 ° 2 rotations = 180 ° 3 rotations =270 ° 4 rotations =360 °

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An angle measuring 90 degrees. right angle

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An angle that measures LESS than 90 degrees. acute angle

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An angle that measures MORE than 90 degrees. obtuse angle

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straight angle An angle that measures 180 degrees.

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four criteria for a polygon A polygon is made up of all straight line segments is closed (has no breaks in the line segments) is 2-dimensitional has no lines that cross over each other

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A polygon with all equal sides and all equal angles. regular polygon

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A polygon that does NOT have all equal sides and equal angles. irregular polygon

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four criteria of a rectangle A rectangle : is a quadrilateral. is made up of four line segments. has four 90° angles. is a parallelogram – a four sided polygon with two pairs of parallel sides.

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A quadrilateral (four sided polygon) with two pairs of parallel sides. parallelogram

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A quadrilateral (four sided polygon) with one pair of parallel sides. trapezoid

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Figures that have the same size AND same shape. The figures do not have be in the same position. If you placed the two shapes directly on top of each other they would match up perfectly. congruent

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Figures that have the same shape, but are not the same size. similar

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The line that divides a figure in half so that both halves are exactly the same. line of symmetry

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A triangle with all three sides of equal length. equilateral triangle 3 in.

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A triangle with two sides that are equal and one that is not. isosceles triangle 3 in. 5 in.

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A triangle with all sides that are a different length. scalene triangle 8 in. 9 in. 4 in.

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A triangle with at least one right angle. right triangle

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triangle A polygon with 3 sides.

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quadrilateral A polygon with 4 sides.

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quadrilateral A polygon with 4 sides. parallelograms trapezoids rhombus

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A quadrilateral with two pairs of parallel sides and four equal sides.quadrilateral parallel rhombus

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pentagon A polygon with 5 sides.

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A polygon with 6 sides. hexagon

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A polygon with 8 sides. octagon

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A polygon with 10 sides. decagon

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obtuse triangle A triangle having an obtuse angle. One of the angles of the triangle measures more than 90 degrees.

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acute triangle A triangle having three acute angles.

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Which months have 30 days? April June September November

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Which months have 31 days? January March May July August October December

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The number of square units that can fit inside of a shape. To find the _______, count the square units. area area = 9 square units

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perimeter The distance around the outside of a shape. To find the __________, add the length of all the sides. 2 cm + 3 cm + 3 cm = 8 cm The perimeter of this figure is 8 centimeters.

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bar graph

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A flat surface of a solid shape. face

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The line where two surfaces of a 3-dimensional shape meet. edge

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A corner where two or more straight lines meet on a 3-dimenstional shape. vertex vertices (plural) vertex

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The number below the bar in a fraction.fraction It tells the total number of equal parts or groups into which the whole or group has been divided.divided denominator

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The number above the bar in a fraction.fraction It tells how many of the equal parts of the whole or group are being considered. numerator

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The volume of this figure is 24 cubic units. The amount of space a solid figure takes up.solid figure Volume = Length x Width x Height V = L x W x H volume

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square pyramid A 3-dimensional solid with a base that is a square and four faces that are triangles. squarefacestriangles

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The metric unit formetric measuring temperature. Celsius

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Fahrenheit Customary or standard unit for measuring temperature.

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standard form 2,394 A way to write numbers by using the digits 0-9.digits

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expanded form 241 = 200 + 40 + 1

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word form A way to write numbers by using words. two-hundred fifty-seven

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Used on a pictograph to tell how many each picture stands for.pictograph key

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line plot

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line graph A graph that uses a line to show how something changes over time.

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mixed number Number represented by a whole number and a fraction. whole numberfraction 3 5 8

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fraction greater than one A fraction in which the numerator is larger than the denominator. 5353

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A solid figure with six facessolid figurefaces that are rectangles.rectangles rectangular prism

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1,000 grams = 1 kilogram gram and kilogram A metric unit for measuring mass.

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The prefix kilo- is equal to 1,000 kilometer = 1,000 meters kilogram = 1,000 grams

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centi- The prefix is equal to 100 century = 100 years 100 centimeters = 1 meter

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liter and milliliter Metric units for measuring capacity. 1,000 milliliters = 1 liter

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The prefix milli- is equal to 1,000

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10 centimeters = 1 decimeter A decimeter (dm) is about the width of an adult's hand. decimeter A metric unit for measuring length.metric unit

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ante meridiem a.m. The time of day starting at midnight and ending at noon. In Latin, ante meridiem means “before the midday.”

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post meridiem p.m. The time of day starting at noon and ending at midnight. In Latin, post meridiem means “after midday.”

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analog clock digital clock

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colon : The symbol used to separate the hour from the minutes on a digital clock.

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A model of multiplication that arranges objects in rows and columns. array

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The amount a container can hold. capacity Customary cups pints quarts gallons

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The amount a container can hold. capacity Metric milliliters liters kiloliters

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Freezing Point of Water 32 degrees Fahrenheit 0 degrees Celsius Boiling Point of Water 212 degrees Fahrenheit 100 degrees Celsius Normal Body Temperature 98.6 degrees Fahrenheit 37 degrees Celsius temperature

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,, ● hundred millions ten millions hundred thousands ten thousands thousands hundreds tens ones tenths hundredths thousandths decimals Place Value Chart

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Example:634,822 Standard Form:634,822 Word Form:six hundred thirty-four thousand, eight hundred twenty-two Expanded Form:600,000 + 30,000 + 4,000 + 800 + 20 + 2 = 634,822 What is the value of the underlined digit in the number 634,822 = 600,000 What place value does the underlined digit hold? = hundred thousands

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Distributive Property of Multiplication The property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products.sumaddendproducts break down the 8 into 5 + 3 7 x 8 5 + 3 (7 x 5) + (7 x 3) 35 + 21 = 56 break down the 16 into 10 + 6 5 x 16 10 + 6 (5 x 10) + (5 x 6) 50 + 30 = 80

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Identity Property of Multiplication The property that states that the product of any number and 1 is that number. product Examples: 5 × 1 = 5 248 x 1 = 248 1 × 8 = 8

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cube A three-dimensional shape with six congruent square faces.

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A three-dimensional, pointed shape that has a flat, round base. cone

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cylinder 3-dimensional object shaped like a can

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data Another word for information. Information collected about people or things and can be represented in graph form.

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diagonal A line segment that connects two vertices of a polygon that are not next to each other.

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Opposite operations. Operations that undo and check one another. addition and subtraction are inverse operations multiplication and division are inverse operations. inverse operations

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