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2..NR2.2 Find 10 more or 10 less than a given three-digit number and find 100 more or 100 less than a given three-digit number

​I am a number that is 100 more then 248 and 10 less than 358. WHat number am I?

​What number am i ???

10 more 10 less

When looking for a number 10 more or 10 less than a given number, you are only changing the number in the tens place.

100 more and 100 less

When looking for a number that is 100 more or 100 less than a given number you always focus on the hundreds place.

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