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# Saxon Math 54

### Vocabulary Saxon Math 54

angle The opening between two lines or segments that intersect.
area The size of the inside of a flat shape.
average The number that would be in each group if the groups were made equal.
bar graph A graph that uses rectangles to show numbers or measurements.
century One hundred years.
chance How likely it is that something will happen.
circle graph A graph made of a circle divided into sections, sometimes called a pie graph.
circumference The distance around a circle; the perimeter of a circle.
common denominators Denominators that are the same.
common years Years with 365 days; not leap years.
congruent Having the same size and shape.
counting numbers All the numbers in this sequence: 1, 2, 3, , 5, 6, 7, 8, 9, 10,...(not fractions or decimals)
decimal point The dot in a decimal number.
denominator The bottom number in a fraction. It tells how many parts are in a whole.
diameter The distance across a circle through its center.
difference The answer in a subtraction problem.
digit Any of these symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Digits are used to write numbers.
division bar A line between two numbers that shows division.
equals Has the same value as.
equivalent fractions Different fractions that name the same amount.
estimate To carefully guess how much something is.
even numbers Numbers that can be divided by 2 without a remainder. Even numbers have 0,2,4,6, or 8 in the one's place.
expanded form A way to show a number by writing the value of each digit.(8,000+400+60+3)
exponent A number that shows how many times another number is a factor.
fact family Three numbers that can make four facts. (3+4=7, 4+3=7, 7-3=4, 7-4=3)
factor A number that is multiplied.
fraction A number that names part of a whole.
fraction bar A line between the numerator and denominator in a fraction.
geometric solid A shape that takes up space.
graph A diagram that shows, counts, or measures.
greater than Larger than.
hexagon A polygon with six sides.
improper fraction A fraction with a numerator greater than or equal to the denominator; a fraction that is greater than or equal to 1.
intersecting lines Lines that cross.
leap years Years with 366 days; not common years.
less than Smaller than.
line graph A graph that uses segments and points to show information.
line segment Part of a line.
mixed number A number made of a whole number and a fraction.
multiple The product of one whole number and another whole number greater than zero. (The multiples of 4 are 4,8,12,16,...)
number line A line that has marks labeled with numbers in order.
numerator The top number in a fraction. It tells how many parts of a whole are counted.
octagon A polygon with eight sides.
odd numbers Numbers that have a remainder of one when divided by 2. Odd numbers have 1,3,5,7, ot 9 in the one's place.
ordinal numbers Numbers that tell position or order. (first, second, third)
parallel lines Lines that stay the same distance apart; lines that do not cross.
pentagon A polygon with five sides.
perimeter The distance around a closed, flat shape.
perpendicular lines Lines that intersect and make square corners.
pictograph A graph with pictures of things being counted.
polygon A flat, closed shape with straight sides.
probability How likely it is that something will happen. (Written as a fraction.)
product The answer in a multiplication problem.
quadrilateral A polygon with four sides.
radius The distance from the center of a circle to a point on the circle.
reduced fraction An equivalent fraction written with a smaller numerator and denominator.
regular polygon A polygon with all sides the same length and all angles the same size.
right angle A square angle.
Roman numerals Symbols used by the ancient Romans to write numbers.
scale A type of number line used to measure things. Rulers, clocks, thermometers, and many other things have scales.
sequence A list of numbers that follows a rule.
square unit A square with sides of designated length. Square units are used to measure area.