The sum of two odd numbers is an odd number.

Every whole number is a natural number.

There is a whole number which when added to a whole number, gives that number.

The digits of 6 and 9 of the number 36490 are interchanged. Find the difference between the original number and the new number?

Commutativity and associativity are properties of addition of whole numbers.

A vendor supplies 32 litres of milk to a hotel in the morning and 68 litres of milk in the evening. If the milk costs rupees 45 per litre, how much money is due to the vendor per day?

The population of a town is 96209. If the number of men is 29642 and that of women is 29167, determine the number of children.

49 × 66 + 49 × 34 = 49 × (….. + …..)

The population of a town was 59000. In one year it was increased by 4536 due to new births. However, 9218 persons died or left the town during the year. What was the population at the end of the year?

There is a whole number which when added to a whole number, gives that number.

Find the difference between the largest number of 4 digits and the smallest number of 7 digits?

The product of the successor of 999 and the predecessor of 1001 is?