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SAT MATH {numbers and operations}
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Terms in this set (11)
Integers
-4, -3, -2, -1, 0, 1, 2, 3, 4, . . .
(Note: zero is neither positive nor negative.)
Consecutive Integers
Integers that follow in sequence; for example, 22, 23, 24, 25. Consecutive integers can be more generally represented by n, n +1, n + 2, n + 3, . . .
Odd Integers
-7, -5, -3, -1, 1, 3, 5, 7, . . . , 2k + 1, . . . , where k is an integer
Even Integers
-6, -4, -2, 0, 2, 4, 6, . . . , 2k, . . . , where k is an integer
(Note: zero is an even integer.)
Prime Numbers
2, 3, 5, 7, 11, 13, 17, 19, . . .
(Note: 1 is not a prime and 2 is the only even prime.)
Digits
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
(Note: the units digit and the ones digit refer to the same digit in a number. For example, in the number 125, the 5 is called the units digit or the ones digit.)
Whole numbers
The set of numbers we use to count objects.
0, 1, 2, 3
Natural numbers
The set of all whole numbers, excluding zero.
1, 2, 3, 4, 5, 6
Rational Numbers
The set of numbers that can be expressed as integers in fractions, in the form m/n, where m and n are integers.
3/4, 1/2, 5/6 <--- {fractions}
Irrational numbers
The set of all numbers that cannot be expressed as integers in a fraction.
, 0.33333333, square root of 2, pi
Real numbers
Every number on the number line. The set of real numbers includes all rational and irrational numbers.
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