Long Multiplication: 680 × 8

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

What is 680 × 8?

Answer

680 × 8 =
5,440

680 × 8 and 8 × 680 are the same product — the order of the factors never changes the answer, only the working. Below, 680 is multiplied by 8 in a column, digit by digit.

680 × 8 in a Column

The multiplicand goes on top, the multiplier underneath, both aligned on the right. The multiplier has a single digit, so there is one partial product and the answer goes straight under the line.

  680
×   8
 5440
680 × 8 = 5,440

Step-by-Step Solution

Step 1: Multiply the multiplicand by the last digit of the multiplier, 8: 680 × 8 = 5,440.

  • 0 × 8 = 0. Write 0.
  • 8 × 8 = 64. Write 4 and carry 6.
  • 6 × 8 = 48, plus the carried 6 makes 54. Write 4 and carry 5.
  • No digits are left, so the carried 5 is written in front: the partial product is 5,440.

680 × 8

=

5,440

Check It, and What It Is Not

Check by dividing back. Multiplication and division undo each other, so 5,440 ÷ 8 = 680 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.

680 × 8 is a number, not an area. If those are the sides of a room in feet, the answer is 5,440 square feet — the same arithmetic, a different question, and it is answered by the square footage calculator.

Related Calculations

See Also

Long Multiplication 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 680 × 8? (The answer is: 5,440). Enter the multiplicand (e.g. '680') and the multiplier (e.g. '8') and hit the button. The order of the two numbers does not matter — 680 × 8 and 8 × 680 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.
Recalculate with different values ↑

Products of 680

MultiplicationProduct
580 × 84,640
590 × 84,720
600 × 84,800
610 × 84,880
620 × 84,960
630 × 85,040
640 × 85,120
650 × 85,200
660 × 85,280
670 × 85,360
680 × 85,440
690 × 85,520
700 × 85,600
710 × 85,680
720 × 85,760
730 × 85,840
740 × 85,920
750 × 86,000
760 × 86,080
770 × 86,160

FAQ

What is 680 × 8?

680 × 8 = 5,440

Is 680 × 8 the same as 8 × 680?

Yes. Multiplication is commutative, so both come to 5,440. Only the working differs: this page multiplies by 8, which gives a single partial product.

How do you check that 680 × 8 = 5,440?

Divide the product back by one of the factors: 5,440 ÷ 8 = 680 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 680 × 8?

There is only one: the multiplier 8 has a single digit, so 680 × 8 = 5,440 is written straight under the line, with no addition step.

See Also