vertical addition by drawing lines
3:26
maths: comparing numbers, put greater than less than equal to
5:41
numbers on abacus :- class 2nd
3:37
maths class first: Edison by counting lines
4:49
class third maths: odd and even numbers
3:56
place and place value in math class 2nd
3:04
addition of 4-digit numbers
3:21
maths: addition of four digit number with regrouping
1:59