Wich number is 10 more than 894?

The answer is 904 because 904 is 10 more than 894

That question means: 894 + 10.

Let's do it by steps:

894 + 10 ... We take one of the 10, and add it to the 894.

895 + 9 ... We take one from 9, and add it to the 895

896 + 8 ... etc

897 + 7 ...

898 + 6

899 + 5

900 + 4

901 + 3

902 + 2

903 + 1

904 + 0 ... and now we're done. So that's 904.