Digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Units Digit: the digit in the one’s place (5,32 6 )
Integer: any number, including negatives and zero, that is not a decimal or a
fraction
Consecutive: in order
Quotient: the result (answer) of a division problem
Product: the result (answer) of a multiplication problem
Prime: any number that can be divided only by 1 and itself. But remember, 2 is
the first prime number, not 1!
Factor: the integers that can be divided into a number. For example, the factors
of 18 are 1, 2, 3, 6, 9, 18. (Don’t forget to include 1 and the number itself.)
Multiple: the answers you get when you multiply by a number. For example, the
multiples of 6 are 0, 6, 12, 18, 24, 30, etc.
Numerator: the number in the top part of a fraction
Denominator: the number in the bottom part of a fraction
Area: the region inside a two-dimensional shape, such as a square or a circle
Volume: the space inside a three-dimensional shape, such as a box or a cylinder
Perimeter: the distance around the outside of a shape
Radius: the distance from the center to a point on the perimeter of a circle
Diameter: all the way across a circle through the center (twice the radius)
Chord: any segment connecting two points on a circle
Circumference: distance around the perimeter of a circle
Mean: average
Median: the middle number in a set of numbers arranged in order (3, 4, 4, 5 , 6,
7, 8)
Mode: the most frequently occurring number in a set of numbers (3, 4 , 4 , 5, 6,
7, 8)
MENTAL MATH TRICK 6: TRANSLATE WORDS INTO OPERATIONS