#### Answer

3. $28\div7\times2=4\times2=8$

#### Work Step by Step

Following the order of operations, "Parentheses first, Exponents second, Multiplication and Division third(from left to right), and Addition and Subtraction fourth(from left to right)" we divide 28 by 7 from left to right first, and then multiply the remaining 4 and 2 from left to right to get 8.