Wake up your pupils’ brains with these addition and subtraction challenge cards! These calculations challenge your pupils’ understanding, ability to reason mathematically and algebraic thinking in a fun and engaging way.
Using images to represent numbers, children use what they know to discover the value of the images. They need to understand the meaning of =, + and - signs and the relationship between addition and subtraction. The calculations include doubles and decomposition of numbers 10 and 20 into pairs.
There are 4 sets of progressively more difficult calculations, as well as 4 sets with the numbers given in an answer key for children requiring more support. There are two open-ended calculations where children can find multiple possible answers to extend their thinking. Further extensions include children writing their own challenges or describing how they solved the problem.