Single Digit Addition
X + X = ?
 
You will be shown two numbers to add.
There will be five possible answers shown below.
Click or Touch the correct answer.

After each answer, you will be shown how many you got correct, how long it took you to answer, and your average seconds per answer.
After 20 rounds, you will be shown a grand total score.
Can you break a grand total of 100 points?