By adding an odd number with an even number.
25 = 23 + 2
5 and 3 are two prime numbers which on adding give 8.
Make sure that one of them is 2.
There are 10 of them. Only the squares of 1 and 11 cannot be made in such a way.
Make sure that you add units to units, tens to tens, hundreds to hundreds, and so on. Keep the digits which represent the numbers in the correct columns before you add.
Adding the logs of numbers is equivalent to multiplying the numbers. People think adding is easier than multiplying.
You click on the cell you want to change and make your changes. If you are asking about how to change the letters at the top of columns and numbers to the left of rows in Excel, you can not.
By adding an odd number with an even number.
By adding 197 + 11 + 2
All you have to do is make the numbers extremely hard then you will have a harder sum!!
Carry out the addition in base 13 numbers.
1,1,1,1 and 12 (if adding); 1,1,1,1 and 16 if multiplying.
25 = 23 + 2
5 and 3 are two prime numbers which on adding give 8.
Adding consecutive pairs of numbers will always turn out to be an odd number. It would have to be consecutive odd numbers: 45 and 47.
8 + 9 + 10 + 11 + 12 = 50