Mathematics Grade 8 15 min

Write and solve equations that represent diagrams

Write and solve equations that represent diagrams

What you'll learn

  • Identify the known and unknown quantities represented in a diagram and translate them into a corresponding algebraic equation with at least 80% accuracy.
  • Solve one-step addition and subtraction equations derived from diagrams, showing all work, with 75% accuracy.
  • Explain the relationship between the diagram and the corresponding equation in their own words, using at least two mathematical terms correctly.
  • Apply the inverse operation to solve for a variable in equations represented by diagrams, and verify the solution by substituting it back into the original equation with 90% accuracy.

Tutorial Preview

1

Find x if the perimeter of the rectangle is 30.

2

Leo has 3 boxes of pencils, plus 5 extra pencils. In total, he has 29 pencils. How many pencils are in each box?

3

A square and a rectangle have the same area. Find x.

Sample Practice Questions

Easy
The perimeter of this rectangle is 28. What is the value of w?
0.7
1.8
2.9
3.14
Easy
Maria has 2 bags of marbles plus 3 extra. She has 17 marbles total. How many are in each bag?
0.5
1.6
2.7
3.8
Easy
A square and a rectangle have the same area. What is the value of x?
0.2
1.3
2.4
3.8

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Frequently asked questions

What grade level is "Write and solve equations that represent diagrams"?

Write and solve equations that represent diagrams is a Grade 8 Mathematics lesson on ExcelOS.

What will I learn in Write and solve equations that represent diagrams?

You'll be able to: Identify the known and unknown quantities represented in a diagram and translate them into a corresponding algebraic equation with at least 80% accuracy; Solve one-step addition and subtraction equations derived from diagrams….

Is "Write and solve equations that represent diagrams" 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 Write and solve equations that represent diagrams?

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

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