Answer: If you choose any 3-digit number and want to know that what is 10 more than that number , you can simply use place value of tens to get the answer. Just add 1 to the tens place of the 3-digit number to get the answer.
For example : To find 10 more than 959
Here 959 is a 3-digit number with tens place of 5 ,then just change 5 to 6 by adding 1 to it ,[other two digits remain same]such that
959+10=969
