Reading a ruler starts with understanding what all the ticks mean. The mid-sized ticks between the inch ticks and half-inch ticks are the quarter-inch ticks.
The smaller ticks are the eighth-inch ticks and may be the smallest or second smallest markings on the ruler. The smallest ticks on a ruler are the sixteenth-inch ticks. Metric rulers have centimeter and millimeter markings.
The larger markings these represent a centimeter. Lay down the ruler so that 0 is at the origin, and the 3 inch mark is on the perpendicular somewhere. When marking down a distance from a ruler , mark the whole inch , followed by a space, then the fraction of an inch. When marking down a distance from a ruler , mark the whole inch, followed by a space, then the fraction of an inch.
What is bigger half inch or 3 8? What is 7 8th of an inch? As an example, the image below shows a length that goes from the inch mark to an unlabeled marking. For example, if you wanted to make something out of construction paper, you'd likely need to use a ruler to measure out how much of the material you would need. Or what if you wanted to frame a photo you have?
In this case, you might have to measure the picture to see what kind of frame it would fit in. There are two types of rulers you can use: the inch, or imperial, ruler and the centimeter, or metric, ruler.
Inches correspond to the imperial system, which is the main measuring system used in the US and a smattering of other countries. Meanwhile, centimeters are part of the metric system, which is used around the world in both everyday life and science.
While we will be providing pictures you can use to follow our instructions, we recommend getting out your own ruler or measuring tape so you can follow along in real time. Now, notice the lines between each inch, with some longer and some shorter than others. Each of these tiny lines represents a fraction of an inch. There are five different lengths of lines in total. The inch is the biggest unit on a ruler and is represented by the longest line.
Each 1-inch line is labeled with a number indicating what inch it is on the ruler as the image above shows. Example: If you were to measure the length of a sheet of computer paper, the piece of paper would come up to the inch mark on your ruler, indicating that it's exactly 11 inches long.
Example: Say you decide to measure the length of a corn on the cob. You find that your ruler comes to the second line after the 6-inch mark. The ruler comes to the seventh line past 3 inches. Knowing how to read a ruler in cm is also helpful for people who'd prefer to not work with fractions which you must do with inches and who'd like to work with other units instead in this case, millimeters.
The standard metric ruler is 30 cm long. Each centimeter is labeled with a number to show the measurement it's referring to. You might see inches on the other side of your metric ruler.
In this case, refer to the instructions above to learn how to read a ruler in inches. Also, be aware that 30 cm does not directly equal 12 inches, even though they are often put on the same ruler! There will always be 10 lines from one centimeter to the next centimeter.
In total, there are three different lengths of lines on a metric ruler. The longest line represents the biggest unit on the ruler: 1 cm.
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