Long Multiplication: 100 × 40

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

What is 100 × 40?

Answer

100 × 40 =
4,000

One partial product: the only non-zero digit of 40 is 4, and it stands for 4 × 10: 100 × 40 = 4,000. 40 × 100 gives the same 4,000.

100 × 40 in a column

100
×40
4000

In the column: product 4,000.

Step by step: 100 × 40

  1. Step 1The last digit of the multiplier is 0, so this partial product is 0 and adds nothing to the total.
  2. Step 2The next digit of the multiplier is 4, and it stands for 40: 100 × 40 = 4,000.
    • 0 × 4 = 0. Write 0.
    • 0 × 4 = 0. Write 0.
    • 1 × 4 = 4. Write 4.
  3. Product4,000

Similar examples to practise

Related Calculations

See Also

Recalculate with different values ↑

Products of 100

MultiplicationProduct
100 × 5500
100 × 6600
100 × 7700
100 × 8800
100 × 9900
100 × 101,000
100 × 111,100
100 × 121,200
100 × 151,500
100 × 161,600
100 × 202,000
100 × 252,500
100 × 303,000
100 × 404,000
100 × 505,000
100 × 606,000
100 × 757,500
100 × 808,000
100 × 909,000
100 × 10010,000

FAQ

What is 100 × 40?

100 × 40 = 4,000

Is 100 × 40 the same as 40 × 100?

Yes. Multiplication is commutative, so both come to 4,000. Only the working differs: this page multiplies by 40, which gives a single partial product.

How do you check that 100 × 40 = 4,000?

Divide the product back by one of the factors: 4,000 ÷ 40 = 100 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 100 × 40?

Only one of them counts: every other digit of 40 is a zero and contributes nothing, so the work comes down to 100 × 40 = 4,000, with nothing left to add.

See Also