Long Multiplication: 100 × 80

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

What is 100 × 80?

Answer

100 × 80 =
8,000

One partial product: the only non-zero digit of 80 is 8, and it stands for 8 × 10: 100 × 80 = 8,000. 80 × 100 gives the same 8,000.

100 × 80 in a column

100
×80
8000

In the column: product 8,000.

Step by step: 100 × 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: 100 × 80 = 8,000.
    • 0 × 8 = 0. Write 0.
    • 0 × 8 = 0. Write 0.
    • 1 × 8 = 8. Write 8.
  3. Product8,000

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Products of 100

MultiplicationProduct
100 × 5500
100 × 6600
100 × 7700
100 × 8800
100 × 9900
100 × 101,000
100 × 111,100
100 × 121,200
100 × 151,500
100 × 161,600
100 × 202,000
100 × 252,500
100 × 303,000
100 × 404,000
100 × 505,000
100 × 606,000
100 × 757,500
100 × 808,000
100 × 909,000
100 × 10010,000

FAQ

What is 100 × 80?

100 × 80 = 8,000

Is 100 × 80 the same as 80 × 100?

Yes. Multiplication is commutative, so both come to 8,000. Only the working differs: this page multiplies by 80, which gives a single partial product.

How do you check that 100 × 80 = 8,000?

Divide the product back by one of the factors: 8,000 ÷ 80 = 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 × 80?

Only one of them counts: every other digit of 80 is a zero and contributes nothing, so the work comes down to 100 × 80 = 8,000, with nothing left to add.

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