This song is available on Harry Guffee's Doggone Math. 

Chorus:
On the number line
On the number line
Positive or negative sign
On the number line
On the number line

Start from zero, add to the right
On the number line, on the number line
Move to the left when you subtract
On the number line

Chorus

Positive addend yields a greater sum
On the number line, on the number line
Negative addend and the sum is less
On the number line

Chorus

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Many thanks to Harry Guffee for permission to publish these lyrics.
© 2002 Pine Mountain Music.  All rights reserved. Printed with permission.

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