An inch ruler is a tool used to measure length in the customary system. Each ruler shows inches, which can be divided into smaller parts such as halves, fourths, and eighths.
An inch is a standard unit of measurement in the United States customary system. You will use it often in real life.
To measure with an inch ruler, line up the object with the zero mark on the ruler, not the edge. Read the number at the other end of the object.
Always begin at the 0 mark. If you start at the ruler’s edge instead of 0, your measurement may be incorrect.
Inches are divided into smaller parts. Most rulers show halves (1/2), fourths (1/4), and eighths (1/8). These fractions help measure more precisely.
Fractions on a ruler are always read in simplest form, like 1/2 instead of 2/4.
We use inches every day when we measure small objects around us. Recognizing inches helps in both math and daily activities.
When you measure real objects, you will often find whole inches or fractions of inches.