DPS International School Teacher Interview Questions and Answers

Addition with carry is a process of adding two or more numbers while carrying over the excess value to the next column.

• Start adding the numbers from the rightmost column

• If the sum is greater than 9, carry over the excess value to the next column

• Continue adding the numbers column-wise until all columns are added

• Example: 345 + 267 = 612, where 5+7=12, carry over 1 to the next column and add 4+6+1=11 in the next column

Subtraction with two digit numbers involves borrowing and regrouping.

• Start from the ones place and subtract the digits, borrow if necessary

• Then move to the tens place and subtract the digits, borrow if necessary

• Check your answer by adding the difference to the subtrahend to get the minuend