This is for children who are learning, or who struggle to add units that cross place value, eg 8 + 4 = 12, or 8 + 9 = 17. The first set of resources and activities involve finding the answers that match the sums you are given. The second set of resources and activities involve children completing the answers for themselves.
I have been inspired to create this resource by the need to use 5 frames and 10 frames more. This is to help students think more flexibly about number, and my Ten Block Maths resource lends itself well to complement the use of manipulatives to decompose numbers to make blocks of 10 s and units.