Long Multiplication: 45 × 9

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

What is 45 × 9?

Answer

45 × 9 =
405

One partial product: 45 × 9 = 405. 9 × 45 gives the same 405.

45 × 9 in a column

45
×9
405

In the column: product 405.

Step by step: 45 × 9

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 9: 45 × 9 = 405.
    • 5 × 9 = 45. Write 5 and carry 4.
    • 4 × 9 = 36, plus the carried 4 makes 40. Write 0 and carry 4.
    • No digits are left, so the carried 4 is written in front: the partial product is 405.
  2. Product405

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Recalculate with different values ↑

Products of 45

MultiplicationProduct
35 × 9315
36 × 9324
37 × 9333
38 × 9342
39 × 9351
40 × 9360
41 × 9369
42 × 9378
43 × 9387
44 × 9396
45 × 9405
46 × 9414
47 × 9423
48 × 9432
49 × 9441
50 × 9450
51 × 9459
52 × 9468
53 × 9477
54 × 9486

FAQ

What is 45 × 9?

45 × 9 = 405

Is 45 × 9 the same as 9 × 45?

Yes. Multiplication is commutative, so both come to 405. Only the working differs: this page multiplies by 9, which gives a single partial product.

How do you check that 45 × 9 = 405?

Divide the product back by one of the factors: 405 ÷ 9 = 45 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 45 × 9?

There is only one: the multiplier 9 has a single digit, so 45 × 9 = 405 is written straight under the line, with no addition step.

See Also