Solving Addition and Subtraction Problems
Learning Objective
I can solve one-step and two-step addition and subtraction problems within 1,000 using what I know about place value and how addition and subtraction are related.
Key Concepts
Addition is the process of combining numbers into a sum, while subtraction is the process of finding the difference of two numbers.
The standard algorithm is a set of steps used to complete a process, like solving addition or subtraction problems.
When solving word problems, it is important to understand the problem, show your work clearly, and explain how you solved it.
Practice Questions
This lesson includes 12 practice questions to reinforce learning.
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1. What does 'sum' mean in math, and which operation results in a sum?
2. What does 'difference' mean in math, and which operation results in finding a difference?
3. Maria has 235 stickers. Her friend gives her 148 more. How many stickers does Maria have in total?
...and 9 more questions
Educational Video
3.4A Addition and Subtraction Word Problems
Lisa Raizes