Long Multiplication: 71 × 9

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

What is 71 × 9?

Answer

71 × 9 =
639

One partial product: 71 × 9 = 639. 9 × 71 gives the same 639.

71 × 9 in a column

71
×9
639

In the column: product 639.

Step by step: 71 × 9

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 9: 71 × 9 = 639.
    • 1 × 9 = 9. Write 9.
    • 7 × 9 = 63. Write 3 and carry 6.
    • No digits are left, so the carried 6 is written in front: the partial product is 639.
  2. Product639

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Recalculate with different values ↑

Products of 71

MultiplicationProduct
61 × 9549
62 × 9558
63 × 9567
64 × 9576
65 × 9585
66 × 9594
67 × 9603
68 × 9612
69 × 9621
70 × 9630
71 × 9639
72 × 9648
73 × 9657
74 × 9666
75 × 9675
76 × 9684
77 × 9693
78 × 9702
79 × 9711
80 × 9720

FAQ

What is 71 × 9?

71 × 9 = 639

Is 71 × 9 the same as 9 × 71?

Yes. Multiplication is commutative, so both come to 639. Only the working differs: this page multiplies by 9, which gives a single partial product.

How do you check that 71 × 9 = 639?

Divide the product back by one of the factors: 639 ÷ 9 = 71 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 71 × 9?

There is only one: the multiplier 9 has a single digit, so 71 × 9 = 639 is written straight under the line, with no addition step.

See Also