Prototec Results

Today I have done stage 6 on prototec. I got 35 answers correct and 5 answers wrong. The questions I got wrong was:

1. 909 + ? = 1000
2. 1000 - 59 = ?
3. 1000 - 994 = ?
4. 9 + ? = 13
5. 5/5 = ?

I answered every question under 3 minutes and 58 seconds.