Long Multiplication: 20 × 9

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

What is 20 × 9?

Answer

20 × 9 =
180

One partial product: 20 × 9 = 180. 9 × 20 gives the same 180.

20 × 9 in a column

20
×9
180

In the column: product 180.

Step by step: 20 × 9

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 9: 20 × 9 = 180.
    • 0 × 9 = 0. Write 0.
    • 2 × 9 = 18. Write 8 and carry 1.
    • No digits are left, so the carried 1 is written in front: the partial product is 180.
  2. Product180

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Recalculate with different values ↑

Products of 20

MultiplicationProduct
10 × 990
11 × 999
12 × 9108
13 × 9117
14 × 9126
15 × 9135
16 × 9144
17 × 9153
18 × 9162
19 × 9171
20 × 9180
21 × 9189
22 × 9198
23 × 9207
24 × 9216
25 × 9225
26 × 9234
27 × 9243
28 × 9252
29 × 9261

FAQ

What is 20 × 9?

20 × 9 = 180

Is 20 × 9 the same as 9 × 20?

Yes. Multiplication is commutative, so both come to 180. Only the working differs: this page multiplies by 9, which gives a single partial product.

How do you check that 20 × 9 = 180?

Divide the product back by one of the factors: 180 ÷ 9 = 20 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 20 × 9?

There is only one: the multiplier 9 has a single digit, so 20 × 9 = 180 is written straight under the line, with no addition step.

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