48 Pythagorean Theorem Worksheet with Answers [Word + PDF] - Free Printable

Final Answer:
25

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Explanation:
- Look at the triangle in the first problem. It has two smaller squares attached to its sides — one with 9 squares (3x3) and one with 16 squares (4x4).
- The big square is on the longest side of the triangle (the hypotenuse).
- To find how many small squares fit inside the big square, just add the two smaller squares: 9 + 16 = 25.
- That’s why the answer is 25. You don’t need to count each little square — just add the two numbers from the smaller squares.

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Teach the Topic:
This is about the Pythagorean Theorem — a rule for right triangles (triangles with a 90-degree corner).
The rule says: if you make squares on each side of the triangle, the big square on the longest side equals the other two squares added together.
Think of it like this:
→ Square on side A + Square on side B = Square on side C (the long side).
Simple example: If one square has 4 blocks (2x2) and the other has 9 blocks (3x3), then the big square has 4 + 9 = 13 blocks.

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Practice Task:
Look at a right triangle with two squares attached: one square has 1 block (1x1), the other has 4 blocks (2x2). How many blocks will fill the big square on the long side?