Long Multiplication: 31 × 9

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

What is 31 × 9?

Answer

31 × 9 =
279

One partial product: 31 × 9 = 279. 9 × 31 gives the same 279.

31 × 9 in a column

31
×9
279

In the column: product 279.

Step by step: 31 × 9

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 9: 31 × 9 = 279.
    • 1 × 9 = 9. Write 9.
    • 3 × 9 = 27. Write 7 and carry 2.
    • No digits are left, so the carried 2 is written in front: the partial product is 279.
  2. Product279

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Recalculate with different values ↑

Products of 31

MultiplicationProduct
21 × 9189
22 × 9198
23 × 9207
24 × 9216
25 × 9225
26 × 9234
27 × 9243
28 × 9252
29 × 9261
30 × 9270
31 × 9279
32 × 9288
33 × 9297
34 × 9306
35 × 9315
36 × 9324
37 × 9333
38 × 9342
39 × 9351
40 × 9360

FAQ

What is 31 × 9?

31 × 9 = 279

Is 31 × 9 the same as 9 × 31?

Yes. Multiplication is commutative, so both come to 279. Only the working differs: this page multiplies by 9, which gives a single partial product.

How do you check that 31 × 9 = 279?

Divide the product back by one of the factors: 279 ÷ 9 = 31 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 31 × 9?

There is only one: the multiplier 9 has a single digit, so 31 × 9 = 279 is written straight under the line, with no addition step.

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