The sum of an odd number and an even number is an even number.
Important Questions on Operations on Whole Numbers
Every whole number is a natural number.
Every natural number is a whole number.
There is a whole number which when added to a whole number, gives that number.
There is a natural number which when added to a natural number, gives that number.
Commutativity and associativity are properties of whole numbers.
Commutativity and associativity are properties of addition of whole numbers.
A magic square is an array of numbers having the same number of rows and columns and the sum of numbers in each row, column or diagonal being the same. Fill in the blank cells of the following magic square:
| 8 | 13 | |
| 12 | ||
| 11 |
A magic square is an array of numbers having the same number of rows and columns and the sum of numbers in each row, column or diagonal being the same. Fill in the blank cells of the following magic square:
| 22 | 6 | 13 | 20 | |
| 10 | 12 | 19 | ||
| 9 | 11 | 18 | 25 | |
| 15 | 17 | 24 | 26 | |
| 16 | 7 | 14 |
