Long Multiplication: 90 × 80

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

What is 90 × 80?

Answer

90 × 80 =
7,200

One partial product: the only non-zero digit of 80 is 8, and it stands for 8 × 10: 90 × 80 = 7,200. 80 × 90 gives the same 7,200.

90 × 80 in a column

90
×80
7200

In the column: product 7,200.

Step by step: 90 × 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: 90 × 80 = 7,200.
    • 0 × 8 = 0. Write 0.
    • 9 × 8 = 72. Write 2 and carry 7.
    • No digits are left, so the carried 7 is written in front: the partial product is 720.
  3. Product7,200

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Recalculate with different values ↑

Products of 90

MultiplicationProduct
90 × 4360
90 × 5450
90 × 6540
90 × 7630
90 × 8720
90 × 9810
90 × 10900
90 × 11990
90 × 121,080
90 × 151,350
90 × 161,440
90 × 201,800
90 × 252,250
90 × 302,700
90 × 403,600
90 × 504,500
90 × 605,400
90 × 756,750
90 × 807,200
90 × 908,100

FAQ

What is 90 × 80?

90 × 80 = 7,200

Is 90 × 80 the same as 80 × 90?

Yes. Multiplication is commutative, so both come to 7,200. Only the working differs: this page multiplies by 80, which gives a single partial product.

How do you check that 90 × 80 = 7,200?

Divide the product back by one of the factors: 7,200 ÷ 80 = 90 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 90 × 80?

Only one of them counts: every other digit of 80 is a zero and contributes nothing, so the work comes down to 90 × 80 = 7,200, with nothing left to add.

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