Reading Rulers Worksheets
How to Read a Ruler  While using any measuring instrument, the most basic aspect to consider is being able to accurately read its values and get a proper reading out of it while measuring something. But before learning how to read the units on a measuring instrument and getting an accurate reading out of it, we first need to observe the units mentioned on a ruler and try to comprehend that till what accuracy level the ruler can get us a measurement. A common ruler can give us a measurement accurate down to a centimeter or an inch. In most cases, a ruler also has tiny ten equal divisions between two readings on the centimeter side. These divisions represent a millimeter. So, such a ruler can also read as accurately as a millimeter. Getting a reading on a ruler is simple; you just put the ruler along a line, and starting from the reading zero, you start counting the divisions and stop where the line is ending. Till then, whatever the ruler has measured, that is your final reading and answer.

Basic Lesson
Introduces reading rulers in the scale of inches. Read the ruler and write the length of the red line. This is a scale of a ruler in inches. The horizontal red line is visible from 3 to 5 There is 2 inches distance between the two ends of the red line.
View worksheet 
Independent Practice 1
Students practice with 10 reading the ruler problems. The answers can be found below. Read the ruler and write the length of the red line.
View worksheet 
Independent Practice 2
Students practice with 10 reading the ruler problems. The answers can be found below.
View worksheet 
Independent Practice 3
Students practice with 10 reading the ruler problems. The answers can be found below.
View worksheet 
Independent Practice 4
Students practice with 10 reading the ruler problems. The answers can be found below.
View worksheet 
Homework Worksheet
Reviews all skills in the unit. A great take home sheet. Also provides a practice problem.
View worksheet 
Basic Lesson
Introduces the concept of measuring length with a ruler. Also includes practice problems. Measurement is an act to measure the length of any object using a ruler, tape etc. The standard unit used to measure any length is the meter. We use "m" for meter. To measure smaller length like the length of your pencil, we use centimeter. This is a scale of length 7 centimeter. Each centimeter is divided into 10 millimeters. The long line between two numbers tells the half of a centimeter i.e. 5 mm.
View worksheet 
Reading A Ruler Quiz
5 problems that test measuring length skills and unit conversion.
View worksheet 
Independent Practice 1
Contains 5 length measurement and use of unit practice problems. The answers can be found below.
View worksheet 
Independent Practice 2
Focuses more on the proper use of units. The answers can be found below.
View worksheet 
Homework Worksheet
Provides detailed rulers. Ask students to visualize length. Also touches on the proper use of units.
View worksheet 
Answer Keys
Provides detailed rulers. Ask students to visualize length. Also touches on the proper use of units.
View worksheet
Why Do We Use Rulers?
The main purpose of using a ruler is to measure small lengths. Students can also use it to draw lines in their notebooks of specific lengths. A ruler usually has centimeter and inch readings marked on it. A ruler can accurately measure a length down to a centimeter or an inch. For calculations that are minor and involve smaller units, a ruler might not be the right measuring instrument as it can only measure accurate to a centimeter or an inch and might give erroneous answers under such circumstances. The biggest use of rulers is in the work of construction and design. During such a work, a worker might need to measure small lengths of the structure that they are designing. A ruler might help in measuring those smaller lengths to the required level of accuracy. A ruler can be of different lengths. Usually, we have a footlong ruler, but its length can vary from a foot to a meter.
Poor InchWorm....
What will happen to the inchworm when the U.S. finally
goes metric?
He'll have to become a centipede!
Where can you buy a ruler that is three feet long? At
a yard sale.