Add and subtract fractions - by a tape measure

5 Ways to Add and Subtract Fractions - wikiHow

Addition, subtraction and equivalent fractions

Subtracting Feet and Inches

Addition, subtraction and equivalent fractions

using a ruler to divide fractions

Divide feet - inches using fractions

Converting Inches to Decimal Feet for Construction Supervisors

Adding Fractional Feet and Inches together TL2012

adding subtracting fractions Worksheets

Adding Fractions & Mixed Numbers - Worksheets

Finding the Center

How to measure to the nearest 1/16 of an inch