These questions test your verbal reasoning skills. This includes your testing vocabulary, a logical approach, your ability to determine patterns within words and your ability to manipulate words.
Try the following suggestions for likely ways that the middle number is made from the outside numbers. Add Subtract Multiply Divide Double first number add second number Add both numbers then double Subtract then double Multiply then double Divide then double Add both numbers then add any other number Multiply then subtract any number Divide then add any number Add then half Subtract then half Multiply then half Multiply then multiply by any number
Be sure to check that your chosen method works with both the example numbers, AND that your calculated answer exists in the answers.