+1

This is a math game which all the questions and answers are combined by +1 or -1, plus and minus. See the question and choose the correct answer between +1 and -1. But you only have 20 seconds to answer. Give the correct as answer as fast as you can!


How To Play!?

- See the question & choose the correct answer between +1 and -1.
- Give the correct as answer as fast as you can!

Example : 3+2=4 ======> -1 right answer
4+4=9 ======> +1 right answer