On the old,
Number line,
'Cause you're very bright,
Subtraction takes you,
To the left,
And adding moves you right...
But when negative numbers,
Come into class,
Things work in reverse,
Like fail to pass...
Right and left switch around,
Like winter in June,
The sun would be white,
And yellow, the moon...
So minus a negative,
Is simple you see,
It's the same as plus positive,
Like 6 + + 3...
Subtract a negative?
No challenge for me!
Change,
Minus to plus signs,
Just add,
I'm free!
It's really so simple,
Add two-lines across,