56 . . .
as a math student. The concept of the number line is
simple: Less than is to the left and greater than is to the
From the above, you can also determine that the
right . . .
least common multiple of the numbers 5 and 7 is 35.
Greater Than
The least common multiple, or LCM, is used when
performing various operations with fractions.
–7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7
Less Than
Prime and Composite Numbers
A positive integer that is greater than the number 1 is
either prime or composite, but not both.
Sometimes, however, it is easy to get confused
about the value of negative numbers. To keep things
simple, remember this rule: If a > b, then –b > –a.
■ A prime number has only itself and the number 1
as factors.
Example:
If 7 > 5, then –5 > –7.
Absolute Value
8 + –11 =
The absolute value of a number or expression is always
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