Untitled Document Write two 2 digit numbers on the board.
Students then do the following operations.
Reverse the digits in the top number and add 3. Reverse the digits in the bottom number and add 4. Use the digits in top and bottom numbers to write the largest 4 digit number and the smallest 4 digit number, then add 5. Use the digits to form the smallest number and add 6. Double the top number and add 7.