Please only click this if you want to see the answers.
Here are the riddles: https://web2.0calc.com/questions/april-fool-s-math-riddles
The answers are down below.
1. 1, because 1=5 so 5=1
2. 1
3. 0
4. 4
5. 888+88+8+8+8=1000
More detailed explanations:https://www.mathwarehouse.com/riddles/math-riddles.php