1. Puzzle A
Puzzle B

2. Below is an equation that is not correct yet.
By adding a number of plus signs and minus signs between the digits on the left side (without changing the order of the digits), the equation can be made correct.
= 100
Answer:

3. The numbers from 1-16 are to be placed in a sequence, so that the sum of each two consecutive numbers (numbers in a row) adds up to a square number.
Square numbers = 1, 4, 9, 16, 25, 36, etc….
Answer: