Long Multiplication: 840 × 8

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

What is 840 × 8?

Answer

840 × 8 =
6,720

One partial product: 840 × 8 = 6,720. 8 × 840 gives the same 6,720.

840 × 8 in a column

840
×8
6720

In the column: product 6,720.

Step by step: 840 × 8

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 8: 840 × 8 = 6,720.
    • 0 × 8 = 0. Write 0.
    • 4 × 8 = 32. Write 2 and carry 3.
    • 8 × 8 = 64, plus the carried 3 makes 67. Write 7 and carry 6.
    • No digits are left, so the carried 6 is written in front: the partial product is 6,720.
  2. Product6,720

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Recalculate with different values ↑

Products of 840

MultiplicationProduct
740 × 85,920
750 × 86,000
760 × 86,080
770 × 86,160
780 × 86,240
790 × 86,320
800 × 86,400
810 × 86,480
820 × 86,560
830 × 86,640
840 × 86,720
850 × 86,800
860 × 86,880
870 × 86,960
880 × 87,040
890 × 87,120
900 × 87,200
910 × 87,280
920 × 87,360
930 × 87,440

FAQ

What is 840 × 8?

840 × 8 = 6,720

Is 840 × 8 the same as 8 × 840?

Yes. Multiplication is commutative, so both come to 6,720. Only the working differs: this page multiplies by 8, which gives a single partial product.

How do you check that 840 × 8 = 6,720?

Divide the product back by one of the factors: 6,720 ÷ 8 = 840 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 840 × 8?

There is only one: the multiplier 8 has a single digit, so 840 × 8 = 6,720 is written straight under the line, with no addition step.

See Also