These worksheets are from the Using and Applying Maths section of the Primary Framework for Maths. In schools this strand is considered very important as it shows how well children understand the maths that they have learned and how well they can apply it to different situations. Both these worksheets look at subtraction and making up number sentences. Think of subtraction as taking away one number from a larger number and try to encourage writing three short sentences using the numbers provided, but using different ideas from those provided.
Free Y2 maths worksheets: Making subtraction number stories (pg 3)
Free Y2 maths worksheets: Making subtraction number stories (pg 4)