This is a timed math quiz.
(SUBTRACTION FACTS -  NUMBERS 1 TO 20)
You will have one minute to answer 10 questions.
Type your nickname into the Name box.
Press "Go!" when you are ready to start the challenge!
Type your answers into the Answer box and hit Enter on your keyboard.
Name:      

Question:

What is ?
Answer:

Remember, type only numbers into the box.