--- title: "Two-step addition and subtraction problems" description: "Solve addition and subtraction two-step problems in contexts, deciding which operations and methods to use and why" canonical: https://lightmysky.com/learn/mathematics/two-step-addition-and-subtraction-problems-mt_CDa5AVakLE source: https://lightmysky.com/learn/mathematics/two-step-addition-and-subtraction-problems-mt_CDa5AVakLE.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`. # Two-step addition and subtraction problems Solve addition and subtraction two-step problems in contexts, deciding which operations and methods to use and why Subject: Mathematics · Area: Addition & Subtraction · Ages 8 to 9 Page: https://lightmysky.com/learn/mathematics/two-step-addition-and-subtraction-problems-mt_CDa5AVakLE ## Ready when they can - Identify the two steps needed to solve a contextual problem - Choose between mental and written methods for each step based on the numbers - Explain why the chosen operations and methods are appropriate ## Lesson: Two steps to the answer Some problems need more than one calculation. You work out the first part, then use that answer to work out the second part. That's a two-step problem. **Example.** Zara has $10. She buys a pencil for $3 and an eraser for $2. Step 1: add the prices, 3 + 2 = 5. That's what she spent. Step 2: subtract that from her $10, 10 - 5 = 5. Zara gets $5 change. *(drawing: Zara starts with $10 and pays $5, leaving $5 change.)* **Tip.** Look at the numbers before you pick a method. Small, round numbers are quick to add in your head. Bigger or trickier numbers are safer to write down step by step. **Tip.** Before you calculate, plan both steps and think about why each one makes sense. That way your answer fits the problem, not just a random sum. **Recap.** Break the problem into two steps, solve the first, then use that answer for the second. ## Practice 18 questions on this page, each with its working shown. ## Needs first - [Adding and subtracting (age 8+)](https://lightmysky.com/learn/mathematics/adding-and-subtracting-age-8-mt_mpS-JK_p_m) - [Missing number problems (age 7+)](https://lightmysky.com/learn/mathematics/missing-number-problems-age-7-mt_XuHmIn2xje) ## Opens up - [Adding and subtracting (age 9+)](https://lightmysky.com/learn/mathematics/adding-and-subtracting-age-9-mt_-F_Lv_apzH)