Long Multiplication: 840 × 3

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

What is 840 × 3?

Answer

840 × 3 =
2,520

One partial product: 840 × 3 = 2,520. 3 × 840 gives the same 2,520.

840 × 3 in a column

840
×3
2520

In the column: product 2,520.

Step by step: 840 × 3

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 3: 840 × 3 = 2,520.
    • 0 × 3 = 0. Write 0.
    • 4 × 3 = 12. Write 2 and carry 1.
    • 8 × 3 = 24, plus the carried 1 makes 25. Write 5 and carry 2.
    • No digits are left, so the carried 2 is written in front: the partial product is 2,520.
  2. Product2,520

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Recalculate with different values ↑

Products of 840

MultiplicationProduct
740 × 32,220
750 × 32,250
760 × 32,280
770 × 32,310
780 × 32,340
790 × 32,370
800 × 32,400
810 × 32,430
820 × 32,460
830 × 32,490
840 × 32,520
850 × 32,550
860 × 32,580
870 × 32,610
880 × 32,640
890 × 32,670
900 × 32,700
910 × 32,730
920 × 32,760
930 × 32,790

FAQ

What is 840 × 3?

840 × 3 = 2,520

Is 840 × 3 the same as 3 × 840?

Yes. Multiplication is commutative, so both come to 2,520. Only the working differs: this page multiplies by 3, which gives a single partial product.

How do you check that 840 × 3 = 2,520?

Divide the product back by one of the factors: 2,520 ÷ 3 = 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 × 3?

There is only one: the multiplier 3 has a single digit, so 840 × 3 = 2,520 is written straight under the line, with no addition step.

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