--- title: "Addition Fact Families" url: "https://www.st-andrews-cliftoncampville.staffs.sch.uk/blog/2025-11-17-11-56-addition-fact-families" school: "St. Andrew's CE Primary School" --- # Addition Fact Families ![Image of Addition Fact Families](https://files.schudio.com/st-andrew-s-c-of-e-c-primary-school/images/blog/40F2BCA7-DDE2-410C-A84A-EE6489BEC3D3.jpeg) 17 November 2025 [Emily Leigh](https://www.st-andrews-cliftoncampville.staffs.sch.uk/blog/author/eleigh) [Class One](https://www.st-andrews-cliftoncampville.staffs.sch.uk/blog/category/class-one) Today in Year 1 Maths, we had a fun, practical lesson revisiting Addition Fact Families using paper plates! We learned that a Fact Family uses the same three numbers to create different number sentences. The Fact Family - We picked a set of three numbers (like 5, 2, and 7) and moved their plates around to see the relationships. - We made the two classic addition sentences: - 5 + 2 = 7 - 2 + 5 = 7 (The smaller numbers can swap places!) The 'Bigger Number' Rule - Then, we learned a crucial rule about the biggest number (the total, 7): - Rule: In an addition sentence, the biggest number is the answer! If you start the sentence with the total, the equals sign must come right after it. - We created two more sentences by starting with the biggest number: - 7 = 5 + 2 - 7 = 2 + 5 - These sentences are the same, just written backward! The biggest number is special—it always takes the equals sign with it! Challenge your Year 1 Mathematician: - Ask them to give you a number family (e.g., 4, 3, and 7). - Can they write down all four addition sentences? [Maths](https://www.st-andrews-cliftoncampville.staffs.sch.uk/blog/tag/maths) [ Marvellous Marks: Our First Steps into Optical Art!](https://www.st-andrews-cliftoncampville.staffs.sch.uk/blog/2025-11-12-03-09-marvellous-marks-our-first-steps-into-optical-art) [French ](https://www.st-andrews-cliftoncampville.staffs.sch.uk/blog/2025-11-18-02-25-french) ![St. Andrew's CE Primary School](https://files.schudio.com/st-andrew-s-c-of-e-c-primary-school/images/logo/St-Andrews-footer-logo.png) ### St. Andrew's CE Primary School Main Street Clifton Campville Tamworth B79 0AP 01827 373 266 © Copyright 2024–2026 St. Andrew's CE Primary School School & Trust Websites by [ ![Schudio logo](https://www.st-andrews-cliftoncampville.staffs.sch.uk/img/logo/light.png) ](https://www.schudio.com/) ![](https://files.schudio.com/st-andrew-s-c-of-e-c-primary-school/images/splash/Screenshot_2026-09-21_2.46.56_PM.png)