Post on 08-Jul-2015
MCA-III MATH VOCABULARY FROM DRAFT TEST SPECIFICATIONS
By J. Scheumann and C. Sorenson 2011
Source: MCA III DRAFT Test Specifications for Mathematics, Oct. 15, 201, http://children.state.mn.us (Assessment and Testing/MCAs/Test Specs)
Numbers and Operations
• 6th grade Math Vocabulary
By J. Scheumann and C. Sorenson 2011
inequality
A number sequence stating that two quantities are not
equal, or might not be equal.
Click here for a 2 min video clip.
By J. Scheumann and C. Sorenson 2011
exponent
The raised number in a power that tells the number of times the base is used as a
factor.
4 = 4 * 4 * 43
By J. Scheumann and C. Sorenson 2011
A device for locating points in a plane by means of ordered number pairs or
coordinates.
(3,2)
coordinategrid
By J. Scheumann and C. Sorenson 2011
axis
y axis
X axis
horizontal axisX axis
Vertical axisY axis
By J. Scheumann and C. Sorenson 2011
prime factorization
A number expressed as a product of prime
factors.
The prime factorization of 24 is
2 * 2 * 2 * 3or 2 * 3
3
By J. Scheumann and C. Sorenson 2011
factorization
The original number is represented as a product of factors, and each of those factors is represented as a
product of factors, and so on, until the factor string consists
of prime numbers.
By J. Scheumann and C. Sorenson 2011
multiplication
3 x 4
3(4)
3 • 4
SIGNAL WORDS
By J. Scheumann and C. Sorenson 2011
greatest common factor
The largest factor that two or more numbers
have in common.
The common factors 24and 36 are 1, 2, 3, 4, 6and 12. The greatest
common factor is24 and 36 is 12.
By J. Scheumann and C. Sorenson 2011
least common multiple
The smallest that is a multiple of two or more numbers.
By J. Scheumann and C. Sorenson 2011
integer
Any whole number or its opposite.
-2, 2
6, -100are examples of integers
By J. Scheumann and C. Sorenson 2011
rational number
A rational number is a number that can be written as a simple
fraction (i.e. as a ratio).
Click here for a two minute video clip
By J. Scheumann and C. Sorenson 2011
irrational number
But some numbers cannot be written as a ratio of two integers
...
...they are called Irrational Numbers.
Click here for a two minute video clip
π =3.1415926535897932384626433832795 (and more...)
By J. Scheumann and C. Sorenson 2011
reciprocal
.What to multiply a value by to get 1.
http://www.mathsisfun.com/reciprocal-fraction.html
By J. Scheumann and C. Sorenson 2011
percent (%)
Per hundred, or out of a hundred.
1 100
or 0.01
1 one-hundredth
1%=
15%= 15 100
or 0.15
By J. Scheumann and C. Sorenson 2011
Click here to convert fractions, to decimals to percents.
ratio
A ratio is a comparison of two numbers or measurements
Click here to try it!
if there is 1 boy and 3 girls you could write the ratio as:
1:3 (for every one boy there are 3 girls)1/4 are boys and 3/4 are girls0.25 are boys (by dividing 1 by 4)25% are boys (0.25 as a percentage)
rate
A comparison of two quantities with unlike
units.
A speed such as 55 miles per hour
compares distancewith time.
By J. Scheumann and C. Sorenson 2011
unit rate
When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per
hour, they are called unit rates.
By J. Scheumann and C. Sorenson 2011
2.48/pound
$2.48 per pound
per
In each or for each.
Five chairsper row
per means to divide
By J. Scheumann and C. Sorenson 2011
unit rate notation
¼1÷4
1 to 4 1:4 1 out of 4
25%
By J. Scheumann and C. Sorenson 2011