Long Multiplication: 45 × 4

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

What is 45 × 4?

Answer

45 × 4 =
180

One partial product: 45 × 4 = 180. 4 × 45 gives the same 180.

45 × 4 in a column

45
×4
180

In the column: product 180.

Step by step: 45 × 4

  1. Step 1Multiply the multiplicand by the last digit of the multiplier, 4: 45 × 4 = 180.
    • 5 × 4 = 20. Write 0 and carry 2.
    • 4 × 4 = 16, plus the carried 2 makes 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 45

MultiplicationProduct
35 × 4140
36 × 4144
37 × 4148
38 × 4152
39 × 4156
40 × 4160
41 × 4164
42 × 4168
43 × 4172
44 × 4176
45 × 4180
46 × 4184
47 × 4188
48 × 4192
49 × 4196
50 × 4200
51 × 4204
52 × 4208
53 × 4212
54 × 4216

FAQ

What is 45 × 4?

45 × 4 = 180

Is 45 × 4 the same as 4 × 45?

Yes. Multiplication is commutative, so both come to 180. Only the working differs: this page multiplies by 4, which gives a single partial product.

How do you check that 45 × 4 = 180?

Divide the product back by one of the factors: 180 ÷ 4 = 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 × 4?

There is only one: the multiplier 4 has a single digit, so 45 × 4 = 180 is written straight under the line, with no addition step.

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