Solving Algebraic Expressions
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Objective
I can write and solve algebraic expressions with one variable.
Part 1 of 4
Warm-up video
Professor Dave Explains · 5:38Vetted channel
We don't generate video — this one is by Professor Dave Explains 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 algebraic word problems, we assign variables to represent unknown quantities and construct equations to represent the relationships between them.
- 2
If there are three brothers whose ages are consecutive multiples of three and the sum of their ages is thirty-six, we can represent their ages as X, X + 3, and X + 6.
- 3
When solving algebraic word problems, the trickier part is constructing the equations from the given information, while solving them is the easier part.
Part 3 of 4
Practice
3 questions
Write an algebraic expression to represent the following: A number 'x' increased by seven, then doubled.
Evaluate the expression 3y - 5 when y = 4.
Part 4 of 4
Exit ticket
Quick comprehension check
“Carla and David are siblings. Carla is 5 years older than David. If David is x years old, write an expression for Carla's age. If David is 11 years old, how old is Carla?”
Sample answer included in the free materials
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