--- title: "Year 3 - Maths - Adding Tens To A Three Digit Number" url: "https://darwenstjames.co.uk/news/2025-10-21-year-3-maths-adding-tens-to-a-three-digit-number" school: "Darwen St James’ C of E Primary Academy" --- # Year 3 - Maths - Adding Tens To A Three Digit Number ![](https://files.schudio.com/darwen-st-james-c-of-e-primary-academy/images/news/40e03719-1b15-4dde-b7b4-a5392978fdfb.jpg) 21 October 2025 ![](https://darwen-st-james-c-of-e-primary-academy.schudio.com/images/news/40e03719-1b15-4dde-b7b4-a5392978fdfb.jpg) We **levelled up** our number skills in this Year 3 Maths topic when we **dove into** **Adding Tens to a Three-Digit Number**. We **learned** simple, effective strategies to quickly add multiples of ten (10, 20, 30, etc.) to numbers like 245 or 581. Students **mastered** how the **tens digit changed** while the hundreds and ones digits often **stayed** the same. This **proved to be** a foundational step that **helped develop** mental maths and a strong understanding of place value! [Year 3](https://darwenstjames.co.uk/news/tag/year-3) [Maths](https://darwenstjames.co.uk/news/tag/maths) [![](https://files.schudio.com/darwen-st-james-c-of-e-primary-academy/imagecache/100x100c/news/d619eada-da35-4725-88fc-bbd52de70855.jpg)](https://darwenstjames.co.uk/news/2025-10-20-nursery-r-e-diwali-celebrations) Previous ### [Nursery - R.E - Diwali Celebrations ](https://darwenstjames.co.uk/news/2025-10-20-nursery-r-e-diwali-celebrations) [![](https://files.schudio.com/darwen-st-james-c-of-e-primary-academy/imagecache/100x100c/news/a9a28310-36f7-48db-93db-faa5a7ba06b0.jpg)](https://darwenstjames.co.uk/news/2025-10-22-year-4-storytelling-through-art) Next ### [Year 4 - Storytelling Through Art](https://darwenstjames.co.uk/news/2025-10-22-year-4-storytelling-through-art) ### Academy Life - [News](https://darwenstjames.co.uk/news) - [Events](https://darwenstjames.co.uk/events) - [Clubs](https://darwenstjames.co.uk/academy-life/basc) - [School Council](https://darwenstjames.co.uk/academy-life/school-council) - [Attendance](https://darwenstjames.co.uk/academy-life/attendance) - [Charities and Fundrasing](https://darwenstjames.co.uk/academy-life/charities-and-fundraising) - ![School Games Gold](https://files.schudio.com/darwen-st-james-c-of-e-primary-academy/images/partners/Gold_Logo_25-26(1).png) - ![Healthy school](https://files.schudio.com/darwen-st-james-c-of-e-primary-academy/images/partners/healthy_school.png) - ![Picture News](https://files.schudio.com/darwen-st-james-c-of-e-primary-academy/images/partners/6_Years_of_Picture_News.png) - ![AP smilestar](https://files.schudio.com/darwen-st-james-c-of-e-primary-academy/images/partners/Screenshot_2026-07-27_10.26.27.png) ##### Location St James Crescent Darwen Lancashire BB3 0EY ##### Contact Us 01254 703260 ##### Stay Connected - [Facebook](https://www.facebook.com/Darwenstjames) - [Instagram](https://www.instagram.com/darwenstjames/) © Copyright 2021–2026 Darwen St James’ C of E Primary Academy School & Trust Websites by [ ![Schudio logo](https://darwenstjames.co.uk/img/logo/light.png) ](https://www.schudio.com/)