Evaluate 20^2

Problem

20

Solution

1. Identify the operation as squaring a number, which means multiplying the number by itself.

2. Set up the multiplication expression.

20×20

3. Calculate the product by multiplying the non-zero digits and appending the total number of zeros.

2×2=4

4. Append the two zeros from the original factors to the result.

400

Final Answer

20=400

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