standard_description: Identify shapes as two-dimensional (lying in a plane, “flat”) or three-dimensional (“solid”).
problem_activity: Task
For each set of numbers below, pick two numbers that add to make six. Write an equation that shows that those two numbers add to make 6.
3,    5,     3
6,     0,     2
1,     6,     5
3,     2,     4
4,     2,     6


aligns: no