Subtracting larger numbers in your head is not always easy, so you can use the column method to take one number away from another. You write the larger number above the smaller number, so that the ...

Adding larger numbers in your head is not always easy. If you need to use pen and paper, then the column method is a good way to add. It involves writing one number beneath the other, so that the ...

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: ...