Missing Numbers in Equations
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Objective
I can solve addition and subtraction equations with a missing variable where the sum or difference is less than or equal to 25.
Part 1 of 4
Warm-up video
mathantics · 11:08Vetted channel
We don't generate video — this one is by mathantics 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
In algebra, solving an equation means figuring out the unknown values or variables.
- 2
To keep an equation balanced, you must do the same thing to both sides.
- 3
To isolate a variable when something is being subtracted, you must add to both sides.
Part 3 of 4
Practice
3 questions
Solve for 'y': y + 9 = 16
Solve for 'z': 21 = z - 4
Part 4 of 4
Exit ticket
Quick comprehension check
“Solve for x: 18 - x = 11. Show all steps.”
Sample answer included in the free materials
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