Long Multiplication: 80 × 11

"Long Multiplication Calculator" Calculator

Multiplicand (number to be multiplied)

Multiplier (number to multiply by)

What is 80 × 11?

Answer

80 × 11 = 880

80 × 11 and 11 × 80 are the same product — the order of the factors never changes the answer, only the working. Below, 80 is multiplied by 11 in a column, digit by digit.

80 × 11 in a Column

The multiplicand goes on top, the multiplier underneath, both aligned on the right. Each digit of the multiplier produces its own partial product, and the partial products are added up.

  80
× 11
  80
+800
 880
80 × 11 = 880

Step-by-Step Solution

Step 1: Multiply the multiplicand by the last digit of the multiplier, 1: 80 × 1 = 80.

  • 0 × 1 = 0. Write 0.
  • 8 × 1 = 8. Write 8.

Step 2: The next digit of the multiplier is 1, and it stands for 10: 80 × 10 = 800.

  • 0 × 1 = 0. Write 0.
  • 8 × 1 = 8. Write 8.

80 + 800

=

880

Adding the partial products finishes the work: 80 × 11 = 880.

Check It, and What It Is Not

Check by dividing back. Multiplication and division undo each other, so 880 ÷ 11 = 80 must come out exactly, with no remainder.

Fractions are a different calculation. Both factors here are whole numbers; for 2/3 or 2 3/4 use the fraction multiplication calculator, which multiplies numerators and denominators separately.

80 × 11 is a number, not an area. If those are the sides of a room in feet, the answer is 880 square feet — the same arithmetic, a different question, and it is answered by the square footage calculator.

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About "Long Multiplication Calculator" Calculator

This calculator multiplies two whole numbers the way it is done on paper: digit by digit, carrying where the column overflows, then adding the partial products together. For example, it can help you find out what is 80 × 11? (The answer is: 880). Enter the multiplicand (e.g. '80') and the multiplier (e.g. '11') and hit the button. The order of the two numbers does not matter — 80 × 11 and 11 × 80 are the same product — so either number can go on top. Fractions and mixed numbers belong to the fraction multiplication calculator, and the reverse operation is long division.

"Long Multiplication Calculator" Calculator

Multiplicand (number to be multiplied)

Multiplier (number to multiply by)

Products of 80

MultiplicationProduct
80 × 2160
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

FAQ

What is 80 × 11?

80 × 11 = 880

Is 80 × 11 the same as 11 × 80?

Yes. Multiplication is commutative, so both come to 880. Only the working differs: this page multiplies by 11, which gives 2 partial products.

How do you check that 80 × 11 = 880?

Divide the product back by one of the factors: 880 ÷ 11 = 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 × 11?

They are 80 + 800, and adding them gives 880.

See Also