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# Is it true When you multiply a number by 10 you just add a nought?

Updated: 9/21/2023

Wiki User

12y ago

Yes, it is true for all whole numbers (integers). It is not true for non integers.

It is better to think of multiplying by 10 as moving the decimal point 1 place to the right.

So, 3 * 10 = 30 (We can think of 3 as actually being 3.0, so by moving our decimal point one place to the right we get 30).

Likewise 3.5 * 10 = 35 (Here the rule of adding a 0 does not work as 3.5 isn't a whole number, but moving the decimal point one place to the right always works).

Wiki User

12y ago

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Q: Is it true When you multiply a number by 10 you just add a nought?
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