Long Multiplication: 840 × 6

"Long Multiplication Calculator" Calculator

Multiplicand (number to be multiplied)

Multiplier (number to multiply by)

What is 840 × 6?

Answer

840 × 6 = 5,040

840 × 6 and 6 × 840 are the same product — the order of the factors never changes the answer, only the working. Below, 840 is multiplied by 6 in a column, digit by digit.

840 × 6 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.

  840
×   6
 5040
840 × 6 = 5,040

Step-by-Step Solution

Step 1: Multiply the multiplicand by the last digit of the multiplier, 6: 840 × 6 = 5,040.

  • 0 × 6 = 0. Write 0.
  • 4 × 6 = 24. Write 4 and carry 2.
  • 8 × 6 = 48, plus the carried 2 makes 50. Write 0 and carry 5.
  • No digits are left, so the carried 5 is written in front: the partial product is 5,040.

840 × 6

=

5,040

Check It, and What It Is Not

Check by dividing back. Multiplication and division undo each other, so 5,040 ÷ 6 = 840 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.

840 × 6 is a number, not an area. If those are the sides of a room in feet, the answer is 5,040 square feet — the same arithmetic, a different question, and it is answered by the square footage calculator.

See Also

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 840 × 6? (The answer is: 5,040). Enter the multiplicand (e.g. '840') and the multiplier (e.g. '6') and hit the button. The order of the two numbers does not matter — 840 × 6 and 6 × 840 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 840

MultiplicationProduct
740 × 64,440
750 × 64,500
760 × 64,560
770 × 64,620
780 × 64,680
790 × 64,740
800 × 64,800
810 × 64,860
820 × 64,920
830 × 64,980
840 × 65,040
850 × 65,100
860 × 65,160
870 × 65,220
880 × 65,280
890 × 65,340
900 × 65,400
910 × 65,460
920 × 65,520
930 × 65,580

FAQ

What is 840 × 6?

840 × 6 = 5,040

Is 840 × 6 the same as 6 × 840?

Yes. Multiplication is commutative, so both come to 5,040. Only the working differs: this page multiplies by 6, which gives a single partial product.

How do you check that 840 × 6 = 5,040?

Divide the product back by one of the factors: 5,040 ÷ 6 = 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 × 6?

There is only one: the multiplier 6 has a single digit, so 840 × 6 = 5,040 is written straight under the line, with no addition step.

See Also