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# Math Vocabulary

TermDefinition
Difference The result or answer to a subtraction problem
Product The result or answer to a multiplication problem
Quotient The result or answer to a division problem
Factors are multiplied together to get a product
Multiples can be evenly divided by a number
Composite Number a number with more than two factors
Prime number a number with exactly two factors
Greatest Common Factor (GCF) the highest factor that two numbers have in common
Least Common Multiple (LCM) The smallest multiple that two numbers have in common
Prime Factorization (Number Tree) a number, written as a product of its prime factors
Improper Fraction a fraction in which the numerator is larger than the denominator
Mixed Number the sum of a whole number and a fraction
Reciprocal A fraction where the numerator and denominator are interchanged. The product of a fraction and its reciprocal is always 1
Repeating Decimal a decimal in which a number or a series of numbers continues on and on
Acute Angle An angle less than 90 degrees
Congruent Figures with the same shape and the same size
Obtuse Angle An angle measuring more than 90 degrees
Right Angle An angle measuring exactly 90 degrees
Similar Figures having the same shape, but different size
Straight Angle an angle measuring exactly 180 degrees
Circumference the distance around the outside of a circle
Diameter the widest distance across a circle. The diameter always passes through the center
Radius The distance from any point on the circle to the center. The radius is half of the diameter
Quarilateral square, 4 sides
Pentagon 5 sides
Hexagon 6 sides
Heptagon 7 sides
Octagon 8 sides
Nonagon 9 sides
Decagon 10 sides
Polygon a shape
Equilateral a triangle in which all three sides have the same length
Isosceles a triangle in which two sides have the same length
Scalene a triangle in which no sides are the same length
Freezing Point 0 degrees celsius or 32 degrees Fahrenheit
Boiling Point 100 degrees celsius or 212 degrees Fahrenheit
tablespoon 3 teaspoons
pint 2 cups
quart 2 pints
gallon 4 quarts
pound 16 ounces
ton 2000 pounds
yard 36 inches
mile 1760 yards/5280 feet
meter 100 centimeters/1000 millimeters
proportion a statement that two ratios or fractions are equal
ratio a comparison of two numbers by division; a ratio may look like a fraction
Straight Angle 180 degrees
Inches in a Yard? 36 inches