SAT SUBJECT TEST MATH LEVEL 1

TOPICS IN ARITHMETIC

CHAPTER 3
Fractions, Decimals, and Percents

ARITHMETIC OPERATIONS WITH MIXED NUMBERS

mixed number is a number such as  that consists of an integer followed by a fraction. It is an abbreviation for the sum of the integer and the fraction; so, .

Tactic B3

TACTIC
B3

To do arithmetic with mixed numbers, just enter them into your calculator as sums written in parentheses.

EXAMPLE 9: How you evaluate  depends on your calculator. If you use a scientific calculator with a fraction button, you can enter . If you use a graphing calculator, you would probably enter it as (1 + 2  3)(3 + 1  4). Either way, you should get  or  or , which you can convert to the fraction .