Consolidate pupils' understanding of addition and subtraction within 20 with this Year 1 Compare Number Sentences Discussion Problem. Children will use the clues to write number sentences and calculate totals. They will compare number sentences to find the missing values and various possibilities.

This resource has various possible answers, meaning it is perfect for generating open-ended discussion with your class. An answer sheet guides you through an example answer, which may be useful to complete a worked example.