Four-digit numbers can be partitioned into ones, tens, hundreds and thousands. Understanding the value of each digit makes it easier to compare numbers using the less than (<), greater than (>) and ...
One such interesting question is: "I am a 4 digit number between 5000 and 6000. My ones place is half of my tens place. My hundreds place is 3 times my tens place. What number am I?" (Image credit: ...