Long Multiplication: 100 × 12

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

What is 100 × 12?

Answer

100 × 12 =
1,200

2 partial products: 100 × 2 = 200 and 100 × 10 = 1,000. 12 × 100 gives the same 1,200.

100 × 12 in a column

100
×12
200
+1000
1200

In the column: product 1,200.

Step by step: 100 × 12

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 2: 100 × 2 = 200.
    • 0 × 2 = 0. Write 0.
    • 0 × 2 = 0. Write 0.
    • 1 × 2 = 2. Write 2.
  2. Step 2The next digit of the multiplier is 1, and it stands for 10: 100 × 10 = 1,000.
    • 0 × 1 = 0. Write 0.
    • 0 × 1 = 0. Write 0.
    • 1 × 1 = 1. Write 1.
  3. Sum of the partial products200 + 1,000 = 1,200

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FAQ

What is 100 × 12?

100 × 12 = 1,200

Is 100 × 12 the same as 12 × 100?

Yes. Multiplication is commutative, so both come to 1,200. Only the working differs: this page multiplies by 12, which gives 2 partial products.

How do you check that 100 × 12 = 1,200?

Divide the product back by one of the factors: 1,200 ÷ 12 = 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 × 12?

They are 200 + 1,000, and adding them gives 1,200.

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