You can set up the game in different ways. The television show has one person at a time answering questions with a few lifelines that he can use to access friends or eliminate wrong answers. You should keep the lifelines as familiar markers for the students. However, you can adjust the game so that teams can play. Team members can switch places as the answerer.
The game offers players a set of three lifelines. They can call a friend to help them with one answer, eliminate two wrong answers for another question and seek the audience's opinion for a third. In the classroom, students will enjoy an opportunity to use their cell phones, even if they call a friend in class. Eliminating the wrong answers will be easy for you. Regarding the "ask the audience" lifeline, you can change this lifeline to give the student answering a chance to consult with his team.
Teachers can make the game harder as the subject matter becomes more difficult. A game based around identifying decimals and decimal places will be easy. Include addition and subtraction questions to add difficulty to the game. As an example, “3.47 + 2.3" would test the students’ ability to line up the decimal places correctly before giving an answer. As time passes and students acquire mastery over the subject, multiplying and dividing decimals can serve as the next step. Revisit addition or subtraction problems and change them to multiplication or division problems. Multiplying "3.47 x 2.3" becomes a new challenge with a familiar face.
Extra credit derived from the points earned in the game may or may not be palatable to every teacher. Some may prefer to let students accrue points in games and use these points to buy things, such as candy or a get-out-of-jail-free cards from the teacher. As a final test of worthiness for prizes, make students calculate the points they have earned by multiplying or dividing the total points with a decimal number. A student who wins a million dollars may need to multiply that amount by "0.0001" to determine the amount of extra credit that they have earned. If she gets a wrong answer, she has to start over.