Long Multiplication: 840 × 4

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

What is 840 × 4?

Answer

840 × 4 =
3,360

One partial product: 840 × 4 = 3,360. 4 × 840 gives the same 3,360.

840 × 4 in a column

840
×4
3360

In the column: product 3,360.

Step by step: 840 × 4

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 4: 840 × 4 = 3,360.
    • 0 × 4 = 0. Write 0.
    • 4 × 4 = 16. Write 6 and carry 1.
    • 8 × 4 = 32, plus the carried 1 makes 33. Write 3 and carry 3.
    • No digits are left, so the carried 3 is written in front: the partial product is 3,360.
  2. Product3,360

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Recalculate with different values ↑

Products of 840

MultiplicationProduct
740 × 42,960
750 × 43,000
760 × 43,040
770 × 43,080
780 × 43,120
790 × 43,160
800 × 43,200
810 × 43,240
820 × 43,280
830 × 43,320
840 × 43,360
850 × 43,400
860 × 43,440
870 × 43,480
880 × 43,520
890 × 43,560
900 × 43,600
910 × 43,640
920 × 43,680
930 × 43,720

FAQ

What is 840 × 4?

840 × 4 = 3,360

Is 840 × 4 the same as 4 × 840?

Yes. Multiplication is commutative, so both come to 3,360. Only the working differs: this page multiplies by 4, which gives a single partial product.

How do you check that 840 × 4 = 3,360?

Divide the product back by one of the factors: 3,360 ÷ 4 = 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 × 4?

There is only one: the multiplier 4 has a single digit, so 840 × 4 = 3,360 is written straight under the line, with no addition step.

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