# Unknown Parts Addition Word Problems - Lesson for Grade 2, Chapter - Thinking Deeper about Addition and Subtraction—The Unknown Number

In the "Unknown Parts Addition Word Problems" lesson, designed for Grade 2 students, learners will delve deeper into the concept of addition and subtraction, focusing on scenarios where one or more components of the equation are unknown. This lesson, nestled within the "Thinking Deeper about Addition and Subtraction—The Unknown Number" chapter, is a crucial part of the "Applications in Operations Within 1000" unit, helping students to apply their arithmetic skills in more complex, real-world scenarios.

Through engaging activities such as the "Good Citizens Award! Worksheet," "Visiting the USA Worksheet," and "Making Bracelets to Sell Worksheet," students will practice identifying unknown numbers in addition equations, developing strategies to solve for these missing parts. By contextualizing math problems in everyday activities—recognizing good citizenship, exploring geography, and understanding basic economics—students not only learn arithmetic but also appreciate its practical significance.

Learning to solve for unknown parts in addition word problems is not just about mastering a key mathematical concept; it's about enhancing problem-solving skills, fostering logical thinking, and understanding the world in a more structured way. These skills are foundational, not only for future mathematical learning but for navigating numerous real-life situations that students will encounter as they grow.

Estimated classroom time: 9 min
Chapter: Thinking Deeper about Addition and Subtraction—The Unknown Number
Unit: Applications in Operations Within 1000
Click on any activity below to start learning.
1st
3:00 min
Good Citizens Award! Worksheet
worksheet
2nd
3:00 min
Visiting the USA Worksheet
worksheet
3rd
3:00 min
Making Bracelets to Sell Worksheet
worksheet
Share your lesson with students by clicking:
• ### Activity 1 / Good Citizens Award! Worksheet

A citizen is a person who lives in a particular geographical place and has all the legal rights and benefits. A person can become a citizen of a place through many different ways, but the most common is by birth or marriage. A good citizen is someone who respects all the laws of their country, and does what is right. Ask your students to list some of the things that a good citizen does. Now, look at this worksheet and read the word problem to them. Help them check the equation that matches the word problem, and then underline the correct total.

• ### Activity 2 / Visiting the USA Worksheet

The children in this worksheet are excited about travelling. Do your kids love travelling? Ask them some of the things they look forward to the most when they travel. People travel for a variety of reason; some travel for adventure, some for holiday, and others for business purposes. Juan and Jenn in the picture are travelling for adventure, and have a goal they wish to achieve. Read the word problems to your kids and help them check the equation that matches the problems. Then, circle the correct total.

• ### Activity 3 / Making Bracelets to Sell Worksheet

Do your kids love making crafts? If they do, then they would love this colorful worksheet! If your kids are into making crafts, they have probably spent some days stringing beads together to make a bracelet, or learning the different tricks to making unique bracelet designs. Well, they share something in common with the kids in this downloadable pdf! Read the word problem to your kids and help them check the equation that matches the problem. Then, circle the correct total.