Mini Math Lesson
For use with the March 2010 issue, pages 10–11.
reading a ruler
Most inch rulers or tape measures divide each inch into 16 equal
sections. Lines of different lengths stand for different fractions of an
1 __
inch: ​ __
​, ​ 81  ​, __
​ 41  ​, and _​ 21  ​inch.
16   
}
}
}
_
​ 21 ​ inch __1
​ 4  i​nch __
​ 81  ​inch
}
}
1 inch
1
__
​ 16
   ​​inch
0
1
2
Note: This ruler is not drawn to scale.
Scholastic Inc. grants teachers permission to reproduce this page. © 2010 by Scholastic.