Solving Addition and Subtraction Problems
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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.
Part 1 of 4
Warm-up video
Lisa Schulman · 12:46
We don't generate video — this one is by Lisa Schulman on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
Addition is the process of combining numbers into a sum, while subtraction is the process of finding the difference of two numbers.
- 2
The standard algorithm is a set of steps used to complete a process, like solving addition or subtraction problems.
- 3
When solving word problems, it is important to understand the problem, show your work clearly, and explain how you solved it.
Part 3 of 4
Practice
12 questions
What does 'sum' mean in math, and which operation results in a sum?
What does 'difference' mean in math, and which operation results in finding a difference?
Part 4 of 4
Exit ticket
Quick comprehension check
“Sarah has 225 red balloons and 340 blue balloons. She gives away 45 balloons. How many balloons does Sarah have left?”
Sample answer included in the free materials
Get the materials
Teacher guide, student handout, and slides — free, in Google Docs format
Teacher Guide
Complete lesson plan with answer keys and alternate activities
Student Handout
Printable worksheet
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