Q: What is the digital root of 40

 A: 4

Why is 4 the digital root of the number 40?

The digital root of a number is calculated by splitting the digits of a number and then adding them together. You keep splitting and adding the digits until you reach a single positive number.

How do you calculate the digital root of 40?


Split the number up and add each digit together:


4 + 0 = 4


What is the digital root of number 40?

Answer: 4


More Examples

Number 38394142
Digital Root 2356

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