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40 Cards in this Set
- Front
- Back
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An angle whose measure is more than 0 degrees and less than 90 degrees.
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Acute Angle
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The opening that is formed when two lines or line segments intersect.
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Angle
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Round to the nearest number.
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Approximate
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The amount of liquid a container can hold.
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Capacity
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The distance around a closed, flat shape.
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Perimeter
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The result of subtraction.
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Difference
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Any of the symbols used to write numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
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Digit
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A group of 12.
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Dozen
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A number sentence that uses the symbol = to show that two quantities are equal.
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Equation
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To find the approximate value.
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Estimation
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One of four equal parts.
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Fourths
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A number that names parts of a whole.
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Fraction
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A unit of capacity to equal four quarts.
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Gallon
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Thirty minutes after an hour.
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Half Past
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Side to side.
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Horizontal
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To share common point or points.
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Intersect
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A line that divides a figure into two halves that are mirror images of each other.
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Line of Symmetry
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An operation that uses a number as an addend a specified number of times.
Example: 7+7+7 = 3x7 |
Multiplication
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An angle whose measure is more than 90 degrees and less than 180 degrees.
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Obtuse Angle
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Numbers that have a remainder of 1 when divided by 2.
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Odd Number
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Lines that stay the same distance apart.
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Parallel
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Two lines that intersect at right angles.
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Perpendicular
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A unit of capacity equal to 16 ounces.
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Pint
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A closed, flat shape with straight sides.
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Polygon
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A number that has only 2 factors - the number 1 and itself.
Examples: 3, 7, 11, 13, 19 |
Prime Numbers
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15 minutes after the hour.
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Quarter Past
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15 minutes before the hour.
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Quarter To
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An angle that forms a square corner and measures 90 degrees.
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Right Angle
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The result of addition.
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Sum
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Upright (line or object)
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Vertical line
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A graph that uses rectangles to show numbers or measurements.
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Bar Graph
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To get smaller.
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Decrease
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Twice as much.
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Double
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A part of a line with two distinct endpoints.
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Line Segment
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Numbers less than zero.
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Negative
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The arithmetic operation that reduces a number by an amount determined by another number.
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Subtraction
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A graph that connects points to show how information changes over time.
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Line Graph
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The part of a line that begins at a point and continues without end in one direction.
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Ray
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A scale used on some thermometers to measure temperature; water freezes at 30 degrees and boils at 212 degrees.
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Fahrenheit
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A scale used on some thermometers to measure temperature; water freezes at 0 degrees and boils at 100 degrees.
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Celcius
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