--- title: "Numbers up to 10 into pairs" description: "Decompose numbers up to 10 into pairs in more than one way (part-part-whole)" canonical: https://lightmysky.com/learn/mathematics/numbers-up-to-10-into-pairs-mt_7XcCG43ZZW source: https://lightmysky.com/learn/mathematics/numbers-up-to-10-into-pairs-mt_7XcCG43ZZW.md retrieved: 2026-10-19 --- > **Agent view.** This is the Markdown twin of the page, for tools and assistants. > When to use this site, and the call that answers each job: https://lightmysky.com/agent-instructions.md > API description (OpenAPI 3.1): https://lightmysky.com/openapi.json · Authentication: https://lightmysky.com/auth.md > Pricing: https://lightmysky.com/pricing.md · Catalog: https://lightmysky.com/llms.txt · Full catalog: https://lightmysky.com/llms-full.txt > Every machine-readable file on this domain: https://lightmysky.com/.well-known/ai-catalog.json > Ask for Markdown with `Accept: text/markdown`, a `.md` address, or `?mode=agent`. # Numbers up to 10 into pairs Decompose numbers up to 10 into pairs in more than one way (part-part-whole) Subject: Mathematics · Area: Addition & Subtraction · Ages 4 to 6 Page: https://lightmysky.com/learn/mathematics/numbers-up-to-10-into-pairs-mt_7XcCG43ZZW ## Ready when they can - Show that 5 = 1 + 4, 5 = 2 + 3, 5 = 0 + 5 etc. - Use objects or drawings to find all pairs that make a given number - Record decompositions as equations ## Lesson: Splitting numbers into two groups You know how to put two groups together. Now you can split one snack into two parts to share. The two parts still add up to the whole. For example, 5 can be 1 and 4, or 2 and 3. A number can split in more than one way. *(drawing: 5 stars split into two groups: 2 and 3.)* **Example.** Mia has 6 apples. She makes two piles: 2 apples and 4 apples. Together, they still make 6. **Tip.** There is more than one way to split a number. 5 can be 1 and 4, or 2 and 3. Check by adding the parts back together. **Recap.** A number splits into two parts in more than one way. The parts always add back to the whole. ## Practice 17 questions on this page, each with its working shown. ## Needs first - [Addition as combining or putting together two groups](https://lightmysky.com/learn/mathematics/addition-as-combining-or-putting-together-two-groups-mt_OvyoRo47K-) ## Opens up - [Number bonds to 10](https://lightmysky.com/learn/mathematics/number-bonds-to-10-mt_e8CZ7E5qW7) - [Showing Your Working](https://lightmysky.com/learn/mathematics/showing-your-working-mt_nyK25mNOeR)