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    Long Multiplication: 80 × 80

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

    What is 80 × 80?

    Answer

    80 × 80 =
    6,400

    One partial product: the only non-zero digit of 80 is 8, and it stands for 8 × 10: 80 × 80 = 6,400.

    80 × 80 in a column

    80
    ×80
    6400

    In the column: product 6,400.

    Step by step: 80 × 80

    1. Step 1The last digit of the multiplier is 0, so this partial product is 0 and adds nothing to the total.
    2. Step 2The next digit of the multiplier is 8, and it stands for 80: 80 × 80 = 6,400.
      • 0 × 8 = 0. Write 0.
      • 8 × 8 = 64. Write 4 and carry 6.
      • No digits are left, so the carried 6 is written in front: the partial product is 640.
    3. Product6,400

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    <a href="https://calculat.io/en/number/long-multiplication/80--80">80 × 80 = 6,400 - Long Multiplication - Calculatio</a>Copy
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    80 × 80 = 6,400 - Long Multiplication. 80 × 80 = 6,400. Long multiplication step by step: every carry, every partial product and the final sum.
    https://calculat.io/en/number/long-multiplication/80--80/generated.jpgCopy

    Products of 80

    MultiplicationProduct
    80 × 3240
    80 × 4320
    80 × 5400
    80 × 6480
    80 × 7560
    80 × 8640
    80 × 9720
    80 × 10800
    80 × 11880
    80 × 12960
    80 × 151,200
    80 × 161,280
    80 × 201,600
    80 × 252,000
    80 × 302,400
    80 × 403,200
    80 × 504,000
    80 × 604,800
    80 × 756,000
    80 × 806,400
    Recalculate with different values ↑

    FAQ

    What is 80 × 80?

    80 × 80 = 6,400

    Is 6,400 a square number?

    Yes. 80 × 80 = 6,400, so 6,400 is the square of 80. A square is simply a number multiplied by itself, which is why both factors here are the same.

    How do you check that 80 × 80 = 6,400?

    Divide the product back by one of the factors: 6,400 ÷ 80 = 80 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

    What are the partial products of 80 × 80?

    Only one of them counts: every other digit of 80 is a zero and contributes nothing, so the work comes down to 80 × 80 = 6,400, with nothing left to add.

    See Also