Long Multiplication: 100 × 9

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

What is 100 × 9?

Answer

100 × 9 =
900

One partial product: 100 × 9 = 900. 9 × 100 gives the same 900.

100 × 9 in a column

100
×9
900

In the column: product 900.

Step by step: 100 × 9

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 9: 100 × 9 = 900.
    • 0 × 9 = 0. Write 0.
    • 0 × 9 = 0. Write 0.
    • 1 × 9 = 9. Write 9.
  2. Product900

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Recalculate with different values ↑

Products of 100

MultiplicationProduct
90 × 9810
91 × 9819
92 × 9828
93 × 9837
94 × 9846
95 × 9855
96 × 9864
97 × 9873
98 × 9882
99 × 9891
100 × 9900
110 × 9990
120 × 91,080
130 × 91,170
140 × 91,260
150 × 91,350
160 × 91,440
170 × 91,530
180 × 91,620
190 × 91,710

FAQ

What is 100 × 9?

100 × 9 = 900

Is 100 × 9 the same as 9 × 100?

Yes. Multiplication is commutative, so both come to 900. Only the working differs: this page multiplies by 9, which gives a single partial product.

How do you check that 100 × 9 = 900?

Divide the product back by one of the factors: 900 ÷ 9 = 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 × 9?

There is only one: the multiplier 9 has a single digit, so 100 × 9 = 900 is written straight under the line, with no addition step.

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