1st: Add and Subtract
10,20,30, ___
Which two shapes make up this picture? http://loving2learn.com/Portals/0/Super_Subjects/Mighty%20Math/Geometry/Shapes/More%20Pattern%20Block%20Pictures/More%20Pattern%20Block%20Pictures.GIF
15, 17, 19, __
What shape is missing from this picture:v
84, 74, ___, 54
123, 120, 117, ___
45, 52, 59, ___