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    Long Multiplication: 21 × 3

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

    What is 21 × 3?

    Answer

    21 × 3 =
    63

    One partial product: 21 × 3 = 63. 3 × 21 gives the same 63.

    21 × 3 in a column

    21
    ×3
    63

    In the column: product 63.

    Step by step: 21 × 3

    1. Step 1Multiply the multiplicand by the last digit of the multiplier, 3: 21 × 3 = 63.
      • 1 × 3 = 3. Write 3.
      • 2 × 3 = 6. Write 6.
    2. Product63

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    21 × 3 = 63 - Long Multiplication. 21 × 3 = 63. 3 × 21 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/21--3/generated.jpgCopy

    Products of 21

    MultiplicationProduct
    11 × 333
    12 × 336
    13 × 339
    14 × 342
    15 × 345
    16 × 348
    17 × 351
    18 × 354
    19 × 357
    20 × 360
    21 × 363
    22 × 366
    23 × 369
    24 × 372
    25 × 375
    26 × 378
    27 × 381
    28 × 384
    29 × 387
    30 × 390
    Recalculate with different values ↑

    FAQ

    What is 21 × 3?

    21 × 3 = 63

    Is 21 × 3 the same as 3 × 21?

    Yes. Multiplication is commutative, so both come to 63. Only the working differs: this page multiplies by 3, which gives a single partial product.

    How do you check that 21 × 3 = 63?

    Divide the product back by one of the factors: 63 ÷ 3 = 21 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

    What are the partial products of 21 × 3?

    There is only one: the multiplier 3 has a single digit, so 21 × 3 = 63 is written straight under the line, with no addition step.

    See Also