Introduce children to finding one more and one less than a given 2-digit number using Base 10 with this Year 1 One More, One Less Varied Fluency activity. Children will initially use Base 10 to find one more and one less than a number between 11 and 20, then move on to using a number track to do the same. There are 4 questions to complete.

Use alongside our corresponding Reasoning and Problem Solving resource for the full package - we've got you covered!