Computation and Estimation
- Here's the vocabulary you need to know
Computation
to find an answer using mathematics or logic.
Estimate
To calculate approximately
Digit
any one of the ten symbols: 0, 1, 2, 3, 4, 5, 6, 7 , 8, or 9
Addition
A mathematical operation performed to show the results of joining sets
Associative Property of Addition
Divide
To separate into equal groups
The sum stays the same when the grouping of
addends is changed example: (a + b) + c = a + (b + c)
Difference
The amount that remains after one quantity is subtracted from another
Multiplication
The operation of repeated addition
Associative Property of Multiplication
The product stays the same when the grouping
of factors is changed example: (aּ b)ּ c = aּ (bּ c)
Base of an exponent
the number used as the factor in exponential form
example: In 46, the base is 4 and the exponent is 6.
Common factor
A number that is a factor of two or more numbers
example: 1, 2, and 4 are the common factors of 28 and 36
Common multiple
A number that is a multiple of two or more numbers
example: The numbers 15, 30, 45, and 60 are some of the common multiples of 3
and 5
Commutative Property of Addition
The sum stays the same when the order of the
addends is changed example: a + b = b + a
Commutative Property of Multiplication
The product stays the same when the order
of the factors is changed example: aּ b = bּ a
Composite numbers
A number that has more than two factors
example: 8 is a composite number because it has four factors: 1, 2, 4 and 8
Compute
to find the numerical result, usually by adding, subtracting, multiplying, or
dividing
Decimal
A number written using base ten and a number containing a decimal point
Denominator
The quantity below the line in a fraction that identifies the number of
equal parts into which a whole is divided
Distributive Property - the product of a number and the sum or difference of two
numbers is equal to the sum or difference of the two products
example: aּ (b + c) = (aּ b) + (a ּ c) and aּ (b - c) = (aּ b) - (a ּ c),
where a, b and c stand for any real numbers
Fraction
A way of representing part of a whole or part of a group by telling the number
of equal parts in the whole and the number of those parts you are describing
Greatest common factor
The largest factor of two or more numbers
example: The greatest common factor of 16, 20, and 36 is 4
Improper fraction
A fraction that can be written as a mixed number
example: 12 5 or 22 5
Integer
The set of whole numbers and their opposites
Least Common Denominator
The smallest common multiple of the denominators of two
or more fractions example: the LCD of 1
4 and 5 6 is 12
Least Common Multiple
The smallest common multiple of a set of two or more numbers
example: the LCM of 4 is 6 and 12
Exponent
Scientific Notation
Cost estimation-
The cost estimate is the product of the cost estimating process.
The sources I used www.jefferson.k12.ky.us/.../Vocab/MSM...