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NeSA Math Terms for 5th and 6th Grade
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Gravity
Math Terms for NeSA 5th and 6th Grade
Terms in this set (75)
perimeter
The distance around a geometric figure
simplest form
A fraction is in simplest form when the numerator and denominator have no common factors other than 1.
common denominator
A denominator that is the same in two or more fractions
24 is a common denominator for 1/3, 5/8, and 3/4 because 24 is the LCM of 3, 8, and 4.
fraction
A number that names a part of a whole, or a part of a collection.
percent
"Out of 100" %
When we write 68%, we mean 68 out of 100. When we write the percent sign (%) after a number to indicate percent.
decimal
A number with one or more digits to the right of the decimal point, such as $2.05.
prime number
A whole number greater than 1 that has exactly two factors, 1 and itself.
Such as: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, etc.
composite number
A whole number that has more than two factors.
For example, 4 is a composite number because it has three factors: 1, 2, and 4. ( You can draw MORE than 2 arrays.)
multiples
Products that result from multiplying the number by each of the whole numbers
The multiples of 6 are: 6, 12, 18, 24, 30, 36...
factors
The numbers that are multiplied to achieve a product.
Example 2 x 4 = 8 2 and 4 are factors of 8
distributive property of multiplication
15 x 9 = (10 + 5) x 9
associative property of addition
(12 + 2) + 4 = 12 + (2 + 4)
associative property of multiplication
(3 x 4) x 8 = 3 x (4 x 8)
The grouping of factors does not affect the product.
commutative property of addition
Numbers can added any order to get the same sum.
8 + 11 = 19 11 + 8 = 19
commutative property of multiplication
The order of factors does not change the product.
7 x 6 = 42 6 x 7 = 42
estimate
A quick and easy way to get close to the answer.
$3.91 x 4 estimate $16 because 4 x 4 = 16
sum
The result of addition.
For example 9 is the sum of 5 + 4
product
The result of multipling two or more factors
Example: the product of 3 and 8 is 24 3 x 8 = 24
difference
Answer to a subtraction problem.
Example: 4 is the difference of 9 and 5 9 - 5 = 4
quotient
The answer to a division problem.
Example: 8 is the quotient of 24 divided by 3.
divisor
A number by which another number is divided.
24 divided by 8 = 3 8 is the divisor
dividend
The number that is being divided.
24 divided by 8 = 3 24 is the dividend
order of operations
The order in which operations in an expression to be evaluated are carried out.
1. parentheses 2. exponets 3. multiplication and divison
4. addition and subtraction.
mean
The "average" of a data set, computed by adding the values in a list and then dividing by the number of values in the list.
median
A measure of center in a set of numerical data.
The median of a list of values is the value appearing at the center of a sorted version of the list.
mode
The number that occurs most often in a set of data
range
Distance between highest and lowest scores in a set of data.
theoritical probability
The likelihood that a particular event will occur.
experimental probability
A probability that is determined through experimentation. For example, you could find the experimental probability of getting a head when you toss a coin by tossing a coin many times and keeping track of the outcomes.
Experimental probability may not be the same as the theoretical probability. However, for a large number of trials they are likely to be close.
volume
A measure of the space occupied by an object. (measured in cubic units)
length x width x height
ordered pair
A pair of numbers that give the location of a point on a x and y grid. for example graph (3, 2)
congruent
Having the same size and shape.
equivalant
Having the same value or amount.
degree
A unit used to measure distances around a circle. One degree equals 1/360 of a full circle.
acute angle
An angle less than 90 degrees.
obtuse angle
An angle that is more than 90°, but less than 180°
straight angle
An angle of 180 degrees.
right angle
90 degree angle.
area
The number of square units needed to cover a given surface.
Length x width
numerator
The number above the bar in a fraction. It tells how many parts are being considered. The 3 in 3/4.
denominator
The bottom number in a fraction. In 5/6, 6 is the denominator. It tells you how many parts in all.
meter
The basic metric unit of length.
Meters are represented mathmatically as "m."
centimeter
A metric unit of length. Centimeters are represented as "cm"
1/100 of a meter 1cm = 0.01 m (100 cm = 1 meter)
millimeter
A metric unit of length. Millimeters are represented as "mm".
1/1000 of a meter (1,000 mm = 1 m)
gram
The basic metric unit of weight (mass). Represented as "g".
milligram
A metric unit of weight (mass). Represented as "mg"
1/1000 of a gram 1mg = 0.001 g (1000 mg = 1 gram)
kilogram
A metric unit of weight (mass). Represented as "kg"
1000 times larger than a gram. 1 kg = 1,000 g
liter
The basic metric unit of capacity. Represented as "l"
milliliter
A metric unit of capacity. Represented as "ml"
1/1000 of liter. 1ml = 0.001 liters (1,000 ml = 1 lliter)
kilometer
A metric unit of length. Represented as "km"
1,000 times as long as a meter 1,000 m = 1 km
standard form
A number written with digits. Commas are used to separate groups of three digits starting from the right.
Example: 1,327,289
expanded form
A way to write a number that shows the place value of each digit.
Example: 3,000 + 500 + 60 + 2
possible outcomes
Possible results of an experiment. For example if you toss a number cube the possible outcomes are: 1, 2, 3, 4, 5, and 6
probablility
The ratio of the number of ways an event can occur to the total number of possible outcomes.
Example: The probablility of rolling a 2 when tossing a number cube is 1 out of 6, because there are 6 possible outcomes and one of those outcomes is a 2.
decimal and percent equivalents of 1/4
1/4 = 0.25 = 25%
decimal and percent equivalents of 1/10
1/10 = 0.1 = 10%
decimal and percent equivalents of 1/3
1/3 = 0.333 = 33-1/3 %
decimal and percent equivalents 2/3
2/3 = 0.666 = 66-2/3 %
decimal and percent equivalents 1/5
1/5 = 0.2 = 20 %
decimal and percent equivalents 2/5
2/5 = 0.4 = 40%
decimal and percent equivalents 1/2
1/2 = 0.5 = 50%
decimal and percent equivalents 3/4
3/4 = 0.75 = 75%
edge
A line segment formed when two faces meet in a solid figure.
face
A flat surface on a solid figure.
vertex (plural, "vertices"
The comman endpoint in an angle.
identity property of multiplication
The product of any number and 1 is that number.
Example: 4,295 x 1 = 4,295
capacity
The amount a container will hold.
Degrees in a circle
360 degrees
slide, or translation
A transformation where a figure moves in a straight direction.
flip, or reflection
A transformation where a figure gives its mirro image.
turn, or rotation
A transformation where a figure moves around a point.
transformation
A move such as a slide, flip, or turn that does not change the shape or size of a figure.
equally likely outocomes
Outcomes having the same chance of occurring.
Example: When tossing a coin heads and tails are equally likely outcomes. Both have a 1 out of 2 chance of occurring.
x-value
The first number in an ordered pair.
4 is the x-value in the ordered pair (4, 7)
y-value
The second number in an ordered pair.
3 is the y-value in the ordered pair (5, 3)
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