Long Multiplication: 80 × 20

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

What is 80 × 20?

Answer

80 × 20 =
1,600

One partial product: the only non-zero digit of 20 is 2, and it stands for 2 × 10: 80 × 20 = 1,600. 20 × 80 gives the same 1,600.

80 × 20 in a column

80
×20
1600

In the column: product 1,600.

Step by step: 80 × 20

  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 2, and it stands for 20: 80 × 20 = 1,600.
    • 0 × 2 = 0. Write 0.
    • 8 × 2 = 16. Write 6 and carry 1.
    • No digits are left, so the carried 1 is written in front: the partial product is 160.
  3. Product1,600

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Recalculate with different values ↑

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

FAQ

What is 80 × 20?

80 × 20 = 1,600

Is 80 × 20 the same as 20 × 80?

Yes. Multiplication is commutative, so both come to 1,600. Only the working differs: this page multiplies by 20, which gives a single partial product.

How do you check that 80 × 20 = 1,600?

Divide the product back by one of the factors: 1,600 ÷ 20 = 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 × 20?

Only one of them counts: every other digit of 20 is a zero and contributes nothing, so the work comes down to 80 × 20 = 1,600, with nothing left to add.

See Also