Fourth Grade Mathematics Vocabulary Created by Carrie Schoenfelder Staff Development Teacher Strawberry Knoll Elementary School
an angle that has a measure less than a right angle (less than 90 ) acute angle
mean median mode a measure used to describe data central tendency
a graph the shows how parts of the data are related to the whole and to each other circle graph
E H G F line EF intersects line GH lines that cross at exactly one point intersecting lines
10 Spelling Test Progress 9 8 7 6 5 4 3 2 1 Jan Feb Mar Apr May June a graph that uses a line to show how data change over a period of time line graph
X X X X X X X X X X X X X X X One X shows that one student ate six cookies 0 1 2 3 4 5 6 Cookies Eaten at a Party Numbers show the number of cookies a graph that shows the frequency of data along a number line line plot
A B line segment AB or line segment BA a part of a line that includes two points called endpoints and all the points between them line segment
the mean of 74, 91, 63, 92, & 85 is 81 74 91 63 92 +85 405 number of addends 81 5 405 40 05 5 0 the number found by dividing the sum of a set of numbers by the number of addends
the median of 1, 3, 4, 6, & 7 is 4 1, 3, 4, 6, 7 median the middle number or the average of the two middle numbers in an ordered set of data
Millions Thousands Ones Ones Tens Hundreds Ones Tens Hundreds Ones Tens Hundreds 1, 0 0 0, 0 0 0 1,000 thousands; written as 1,000,000
the mode of 1, 3, 4, 4, & 6 is 4 1, 3, 4, 4, 6 4 occurs most often the numbers or items that occur most often in a set of data
an angle whose measure is greater than a right angle obtuse angle
lines in a plane that never intersect parallel lines
a quadrilateral whose opposite sides are parallel and congruent parallelogram
DO FIRST 4 + (12 + 4) 3 the symbols used to show which operation or operations in an expression should be done FIRST parentheses
two lines that intersect to form four right angles perpendicular lines
a flat surface that extends without end in all directions
A point A an exact location in space usually represented by a dot
a polygon with four sides quadrilateral (quadrangle)
radius a line segment with one endpoint at the center of a circle and the other endpoint on the circle
Heights of Fourth Graders 49 I 50 I I 51 I I I 52 I I 53 I I I I 54 I I 55 I greatest number least number range 55 49 = 6 the difference between the greatest number and the least number in a set of data range
Ray CD D C a part of a line, with one endpoint, that continues without end in one direction
a parallelogram with four congruent sides
a quadrilateral with one pair of parallel sides trapezoid
analyze
(2 x 3) x 4 = 2 x (3 x 4) 6 x 4 = 2 x 12 24 = 24 the property that states that the way addends are grouped or factors are grouped does not change the sum or the product associative
35 5 = 7 The dividend is 35 the number that is to be divided in a division problem dividend
18 3 = 6 6 3 18 The divisor is 3. the number that divides the dividend divisor
10 10 10 10 X1 X2 X3 X4 10 20 30 40 multiples of 10 the product of a given whole number and another whole number multiple
equation example 2x 7 = 9 inequality example 3x 1 < 4 ~a sentence that contains one or more variables ~can be an equation or an inequality open sentence
( 12 + 4 ) - 3 16-3 13 the symbols used to show which operation or operations in an expression should be done first parentheses
3 r4 5 19 15 4 the amount left over when a number cannot be divided equally remainder
function
7 + n Find 7 + n if n = 5 7 + n 7 + 5 variable 12 a letter or symbol that stands for a number or numbers variable
Probability of an event = Number of favorable outcomes Number of possible outcomes Probability of yellow = 1 4 the likelihood that an event will happen probability
Pants Shirts Choices (Outcomes) Red blue pants with red shirt Blue Green blue pants with green shirt White blue pants with white shirt Red tan pants with red shirt Tan Green tan pants with green shirt White tan pants with white shirt so, there are 6 possible outcomes an organized list that shows all possible outcomes for an event tree diagrams
any fraction whose numerator and denominator are whole numbers common fraction
decimal fraction
a fraction with a value greater than 1 or less than 1 which is not written as a mixed number improper fraction
a number represented by a whole number and a fraction mixed number
having the same value or naming the same amount equivalent units
60 seconds = 1 minute a small unit of time
= equivalent fractions
clockwise
combination
communicate
a tool used to construct circles compass
conclude
counter clockwise
a measure in one direction dimension
Formula for area of a rectangle Area = length times width Or A = L X W a set of symbols that expresses a mathematical rule formula
0.01 or _1_ 100 one of one hundred equal parts hundredths
-1 0 1 2 numbers less than zero
place value period
-1 0 1 2 numbers more than zero positive
(5,1) (10,2) (15,3) (20,4) (25,5) a set of ordered pairs relationship
the figure formed by flipping a geometric figure over a line of reflection to obtrain a mirror image reflection
the turning of a figure about a fixed point rotation
0.1 or _1_ 10 one of ten equal parts
the movement of a figure, either a translation, rotation, or reflection transformation
the action of sliding a figure in any direction translation