Sometimes, you may have to modify the result of the dice roll. This is noted as D6 plus or minus a number, such as D6+1. Roll the dice and add or subtract the number given to or from the score (as appropriate) to get the final result. For example, D6+2 means roll a dice an add 2 to the score, giving a total between 3 and 8.
You may also be told to roll a number of dice in one go, which is written as 2D6, 3D6 and so on. Roll the indicated number of dice and add the scores together, so a 2D6 roll is two dice rolled and added together for a score of 2-12. Another method is to multiply the score of a dice by a certain amount, such as D6x5 for a total of between 5 and 30.