10.A Students demonstrate an understanding of and proficiency with calculations, including making decisions concerning which arithmetic operation or operations to use to solve a problem and then solve the problem.
10.A1 classify numbers as natural, whole, integer, rational, or irrational and describe contexts where they are used
10.C Students describe and compare everyday phenomena, using either direct or indirect measurement and describe the characteristics of 3-D objects and 2-D shapes, and analyse the relationships among them.
10.C1 solve 2-D and 3-D problems involving two right triangles
10.C2 extend the concepts of sine and cosine for angles through to 180°