VerticalNum

This is a game of VerticalNum.
1.（The Blue rectangular image represents the sum of numbers）-（The Black rectangular image represents the sum of numbers）-（The blue box represents the sum of numbers）= ？
2.（The Blue rectangular image represents the sum of numbers）-（The orange box represents the sum of numbers）-（The blue box represents the sum of numbers）= ？
3.（The Blue rectangular image represents the sum of numbers）+（The blue box represents the sum of numbers）= ？