This preview shows page 1. Sign up to view the full content.
Unformatted text preview: 2, 3, their negative counterparts, such as −1, −2, −3, and 0).
The GMAT also tests your ability to understand the numbers that fall in between the integers. Such numbers can be expressed as decimals. For example, the decimal 6.3 falls between
the integers 6 and 7. 4 6 6.3 5 7 8
You can use a number
line to decide between
which whole numbers
a decimal falls. Some other examples of decimals include:
Decimals less than −1:
Decimals between −1 and 0:
Decimals between 0 and 1:
Decimals greater than 1: −3.65, −12.01, −145.9
−0.65, −0.8912, −0.076
0.65, 0.8912, 0.076
3.65, 12.01, 145.9 Note that an integer can be expressed as a decimal by adding the decimal point and the
digit 0. For example:
8 = 8.0 −123 = −123.0 400 = 400.0 DIGITS
Every number is composed of digits. There are only ten digits in our number system:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9. The term digit refers to one building block of a number; it does
not refer to a number itself. For example: 356 is a number composed of three digits: 3, 5,
and 6.
Integers can be classified by the number of digits they contain. For example:
2, 7, and −8 are each singledigit numbers (they are each composed of one digit).
43, 63, and −14 are each doubledigit numbers (composed of two digits).
500,000 and −468,024 are each sixdigit numbers (composed of six digits).
789,526,622 is a ninedigit number (composed of nine digits).
Nonintegers are not generally classified by the number of digits they contain, since you can
always add any number of zeroes at the end, on the right side of the decimal point:
9.1 = 9.10 = 9.100 * Manhattan GMAT Prep
the new standard 13 Chapter 1 DIGITS & DECIMALS STRATEGY Place Value
Every digit in a number has a particular place value depending on its location within the
number. For example, in the number 452, the digit 2 is in the ones (or “units”) place, the
digit 5 is in the tens place, and the digit 4 is in the hundreds place. The name of each location corresponds to the “value”...
View
Full
Document
This note was uploaded on 02/07/2014 for the course MIS 304 taught by Professor Mejias during the Spring '07 term at University of Arizona Tucson.
 Spring '07
 MEJIAS

Click to edit the document details