Mathematics Grade 8 15 min

Add and subtract fractions with like denominators

Add and subtract fractions with like denominators

What you'll learn

  • Identify the 'a', 'b', and 'c' coefficients in a quadratic equation written in standard form (ax² + bx + c = 0) with 100% accuracy.
  • Solve quadratic equations of the form ax² + bx + c = 0 by completing the square, demonstrating all steps accurately for at least 80% of assigned problems.
  • Explain the rationale behind each step in the process of completing the square, including why a constant is added to both sides of the equation, with clear and concise justifications in written form.
  • Apply the method of completing the square to rewrite a quadratic equation in vertex form (a(x-h)² + k = 0) and identify the vertex (h, k) of the parabola with 90% accuracy.

Tutorial Preview

1

What is 2/7 + 3/7?

2

What is 6/8 - 1/8?

3

What is 4/5 + 3/5?

Sample Practice Questions

Easy
What is 1/5 + 2/5?
0.3/5
1.3/10
2.2/5
3.2/25
Easy
What is 1/4 + 1/4?
0.2/8
1.1/8
2.2/4
3.1/16
Easy
What is 3/6 - 1/6?
0.2/6
1.2/0
2.4/6
3.2/12

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Frequently asked questions

What grade level is "Add and subtract fractions with like denominators"?

Add and subtract fractions with like denominators is a Grade 8 Mathematics lesson on ExcelOS.

What will I learn in Add and subtract fractions with like denominators?

You'll be able to: Identify the 'a', 'b', and 'c' coefficients in a quadratic equation written in standard form (ax² + bx + c = 0) with 100% accuracy; Solve quadratic equations of the form ax² + bx + c = 0 by completing the square, demonstrating….

Is "Add and subtract fractions with like denominators" 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 Add and subtract fractions with like denominators?

This lesson includes 25 practice questions across multiple difficulty levels, each with instant feedback and explanations.

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