Mathematics Grade 8 15 min

Similar and congruent figures

Similar and congruent figures

What you'll learn

  • Identify compatible numbers to estimate the product of two decimal numbers with at least 80% accuracy on a worksheet with 10 problems.
  • Estimate the product of two decimal numbers by rounding each decimal to the nearest whole number and multiplying, achieving at least 7 out of 10 correct answers on a quiz.
  • Explain the reasonableness of an estimated product of two decimal numbers in a real-world scenario, providing a justification that includes rounding strategies and comparison to the actual product.
  • Solve word problems involving estimating the product of decimal numbers in real-world contexts, demonstrating the ability to choose appropriate rounding strategies and expressing the answer with correct units in at least 3 out of 4 problems.

Tutorial Preview

1

Are these two triangles congruent?

2

Find the missing side 'x' in the similar rectangles.

3

Are these triangles similar, congruent, or neither?

Sample Practice Questions

Easy
Two squares each have a side length of 5 cm. Are they congruent?
0.Yes
1.No
Easy
A small rectangle is 2 by 4. A similar large rectangle has a short side of 4. What is its long side?
0.4
1.6
2.8
3.10
Easy
Triangle A has sides 3, 3, 3. Triangle B has sides 3, 3, 3. Are they congruent?
0.Yes
1.No

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Frequently asked questions

What grade level is "Similar and congruent figures"?

Similar and congruent figures is a Grade 8 Mathematics lesson on ExcelOS.

What will I learn in Similar and congruent figures?

You'll be able to: Identify compatible numbers to estimate the product of two decimal numbers with at least 80% accuracy on a worksheet with 10 problems; Estimate the product of two decimal numbers by rounding each decimal to the nearest whole….

Is "Similar and congruent figures" 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 Similar and congruent figures?

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

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