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    Long Multiplication: 100 × 90

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

    What is 100 × 90?

    Answer

    100 × 90 =
    9,000

    One partial product: the only non-zero digit of 90 is 9, and it stands for 9 × 10: 100 × 90 = 9,000. 90 × 100 gives the same 9,000.

    100 × 90 in a column

    100
    ×90
    9000

    In the column: product 9,000.

    Step by step: 100 × 90

    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 9, and it stands for 90: 100 × 90 = 9,000.
      • 0 × 9 = 0. Write 0.
      • 0 × 9 = 0. Write 0.
      • 1 × 9 = 9. Write 9.
    3. Product9,000

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    100 × 90 = 9,000 - Long Multiplication. 100 × 90 = 9,000. 90 × 100 gives the same product. Long multiplication step by step: every carry, every partial product and the final sum.
    https://calculat.io/en/number/long-multiplication/100--90/generated.jpgCopy

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    100 × 10010,000
    Recalculate with different values ↑

    FAQ

    What is 100 × 90?

    100 × 90 = 9,000

    Is 100 × 90 the same as 90 × 100?

    Yes. Multiplication is commutative, so both come to 9,000. Only the working differs: this page multiplies by 90, which gives a single partial product.

    How do you check that 100 × 90 = 9,000?

    Divide the product back by one of the factors: 9,000 ÷ 90 = 100 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

    What are the partial products of 100 × 90?

    Only one of them counts: every other digit of 90 is a zero and contributes nothing, so the work comes down to 100 × 90 = 9,000, with nothing left to add.

    See Also