Long Multiplication: 100 × 15

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

What is 100 × 15?

Answer

100 × 15 =
1,500

2 partial products: 100 × 5 = 500 and 100 × 10 = 1,000. 15 × 100 gives the same 1,500.

100 × 15 in a column

100
×15
500
+1000
1500

In the column: product 1,500.

Step by step: 100 × 15

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 5: 100 × 5 = 500.
    • 0 × 5 = 0. Write 0.
    • 0 × 5 = 0. Write 0.
    • 1 × 5 = 5. Write 5.
  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 products500 + 1,000 = 1,500

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100 × 101,000
100 × 111,100
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FAQ

What is 100 × 15?

100 × 15 = 1,500

Is 100 × 15 the same as 15 × 100?

Yes. Multiplication is commutative, so both come to 1,500. Only the working differs: this page multiplies by 15, which gives 2 partial products.

How do you check that 100 × 15 = 1,500?

Divide the product back by one of the factors: 1,500 ÷ 15 = 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 × 15?

They are 500 + 1,000, and adding them gives 1,500.

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