Mathematics
Grade 5
15 min
Sale prices
Sale prices
What you'll learn
- Identify, given a system of two linear equations, whether the system has one solution, no solution, or infinitely many solutions by graphing the equations on a coordinate plane.
- Graph two linear equations on the same coordinate plane, accurately plotting at least two points for each line, to visually represent a system of equations.
- Explain the relationship between the graphical representation of a system of linear equations (intersecting lines, parallel lines, or coinciding lines) and the number of solutions to the system, justifying the explanation with mathematical reasoning.
- Determine the number of solutions (one, none, or infinite) to a system of two linear equations by analyzing the slopes and y-intercepts of their graphical representations, providing a clear justification for the answer.
Tutorial Preview
1
A shirt costs $20. It's 10% off. What is the discount?
2
A game costs $40. It's 25% off. What is the sale price?
3
A book is $12. It's 1/3 off. What is the sale price?
Sample Practice Questions
Easy
A hat costs $30. It's 10% off. What is the discount amount?
0.$3
1.$27
2.$10
3.$30
Easy
A pen costs $10. It's 50% off. What is the discount amount?
0.$1
1.$5
2.$15
3.$2
Easy
A toy car costs $10. It's 10% off. What is the new sale price?
0.$1
1.$9
2.$10
3.$11
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Frequently asked questions
What grade level is "Sale prices"?
Sale prices is a Grade 5 Mathematics lesson on ExcelOS.
What will I learn in Sale prices?
You'll be able to: Identify, given a system of two linear equations, whether the system has one solution, no solution, or infinitely many solutions by graphing the equations on a coordinate plane; Graph two linear equations on the same coordinate….
Is "Sale prices" free to practice?
Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.
How many practice questions are included with Sale prices?
This lesson includes 25 practice questions across multiple difficulty levels, each with instant feedback and explanations.