If any two whole numbers a  and b are  added, a to b or b to a, the _______ is always _____.

If ________ is added to a number, the sum will remain the same.

The number of students in each class of a school is 25. The fees paid by each student is Rs. 812 per month. If there are 40 classes in the school. What is the total fee collection in a month ?

18 x 6 + 18 x 7 = 18 ( 6 + ___ ).

5 x 87 x 20 = 5 x ___.

(46 + 4 ) + 8 = 46 + ( 8 +  __ )

The smallest whole number is _________.

1 + 2 is a whole  number.  The  property of addition used here is ________.

Amal  scores 52 runs in the first innings and 78 runs in the  second innings.  Rahul scores 78 runs in the first innings and 52 runs in the second innings.  Who has the higher total score?

Solve 15 x 12  - 5 x 12.