Long Multiplication: 25 × 25

Long Multiplication Calculator
Multiplicand (number to be multiplied)
Multiplier (number to multiply by)

What is 25 × 25?

Answer

25 × 25 =
625

2 partial products: 25 × 5 = 125 and 25 × 20 = 500.

25 × 25 in a column

25
×25
125
+500
625

In the column: product 625.

Step by step: 25 × 25

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 5: 25 × 5 = 125.
    • 5 × 5 = 25. Write 5 and carry 2.
    • 2 × 5 = 10, plus the carried 2 makes 12. Write 2 and carry 1.
    • No digits are left, so the carried 1 is written in front: the partial product is 125.
  2. Step 2The next digit of the multiplier is 2, and it stands for 20: 25 × 20 = 500.
    • 5 × 2 = 10. Write 0 and carry 1.
    • 2 × 2 = 4, plus the carried 1 makes 5. Write 5.
  3. Sum of the partial products125 + 500 = 625

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See Also

Products of 25

FAQ

What is 25 × 25?

25 × 25 = 625

Is 625 a square number?

Yes. 25 × 25 = 625, so 625 is the square of 25. A square is simply a number multiplied by itself, which is why both factors here are the same.

How do you check that 25 × 25 = 625?

Divide the product back by one of the factors: 625 ÷ 25 = 25 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 25 × 25?

They are 125 + 500, and adding them gives 625.