Cracking the CSET (California Subject Examinations for Teachers) by Princeton Review

Author:Princeton Review
Language: eng
Format: epub
Publisher: Random House Children's Books
Published: 2019-01-14T16:00:00+00:00

Grouping Symbols

The most common grouping symbols you’ll see in a mathematical expression will be parentheses. But there are others you should know about.

Brackets—they look like this: [ ]—are grouping symbols that work the same way as parentheses. They are usually used if multiple sets are parentheses will look too confusing. So, for example, you might see an expression like 200 ÷ [(2 × 52) ÷ 2]. In that case, work the grouping symbols from innermost to outermost: find the value of (2 × 52) and substitute: 200 ÷ [(2 × 25) ÷ 2] = 200 ÷ [50 ÷ 2]; then simplify inside the brackets and substitute: 200 ÷ 25; then solve the rest: 200 ÷ 25 = 8.

Another important grouping symbol is the fraction bar! It works by implying a set of parentheses surrounding the numerator and one surrounding the denominator: = = = 7. Make sure to keep this one in mind because it’s less obvious than the other two.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.