# Addition and Subtraction Match-Up

In Grade 2, you investigate addition and subtraction within 100 ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29844)). This game helps you practise key words and ideas you use when you add and subtract. You will match terms like addend, sum, compose, doubles, inverse, minuend, regroup, and strategy to their meanings. Understanding these words makes it easier to talk about the math you are doing and to solve problems ([Skills](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29852)).

## How to play

1. Read each word or phrase on the left side.
2. Find the meaning that matches it on the right side.
3. Draw a line to connect the pair, or write the letter of the answer next to the number.
4. Check your answers with your teacher when you are done.

## Match the pairs

| Column A | | Column B |
|:---|:---:|:---|
| **A.** addend | ____ | **1.** Using tens and ones to add 23 + 15 |
| **B.** sum | ____ | **2.** 6 + 6 = 12 |
| **C.** compose | ____ | **3.** If 8 − 3 = 5, then 5 + 3 = 8 |
| **D.** doubles | ____ | **4.** 3 in the problem 3 + 5 = 8 |
| **E.** inverse | ____ | **5.** 10 in the problem 10 − 3 = 7 |
| **F.** minuend | ____ | **6.** Changing 1 ten and 2 ones into 12 ones |
| **G.** regroup | ____ | **7.** Making 15 by putting 10 and 5 together |
| **H.** strategy | ____ | **8.** 8 in the problem 3 + 5 = 8 |

## Answer key

- **A** matches **4** (addend: 3 in the problem 3 + 5 = 8)
- **B** matches **8** (sum: 8 in the problem 3 + 5 = 8)
- **C** matches **7** (compose: Making 15 by putting 10 and 5 together)
- **D** matches **2** (doubles: 6 + 6 = 12)
- **E** matches **3** (inverse: If 8 − 3 = 5, then 5 + 3 = 8)
- **F** matches **5** (minuend: 10 in the problem 10 − 3 = 7)
- **G** matches **6** (regroup: Changing 1 ten and 2 ones into 12 ones)
- **H** matches **1** (strategy: Using tens and ones to add 23 + 15)

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*AILI game · language en · model claude-haiku-4-5-20251001 · generated 2026-09-17 · id 4ac1fd42-2c83-491f-83df-3766c29f3c13*

### Sources

- node:n1: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29843)
- node:n2: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29844)
- node:n3: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? › Students investigate addition and subtraction within 100. (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29846)
- node:n4: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? › Students investigate addition and subtraction within 100. (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29848)
- node:n5: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? › Students investigate addition and subtraction within 100. (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29847)
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- node:n10: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? › Students investigate addition and subtraction within 100. (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29850)
- node:n11: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? › Students investigate addition and subtraction within 100. (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29848)
- node:n12: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29844)
- node:n13: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? › Students investigate addition and subtraction within 100. (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29847)
- node:n14: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? › Students investigate addition and subtraction within 100. (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29846)
- node:n15: Mathematics › Mathematics (K–6) › Grade 2 › Number: Quantity is measured with numbers that enable counting, labelling, comparing, and operating. › How can addition and subtraction be interpreted? › Students investigate addition and subtraction within 100. (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/29851)
- resource:r1: Resources › type#activity, type#classroomactivity › MAT2, MAT3, MAT4, MAT5 (https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/zcsdujXlaUa2uuq1-kBv0Q)