The line is slightly longer so that it stands out and we can read half a centimetre more easily. Once we count past 5 mm, we can count 6 mm, 7 mm, 8 mm, 9 mm and eventually get to 10 mm below. Once we have counted 10 of the smallest lines, we have counted 10 mm. Every centimetre on a ruler is worth 10 mm. We will now look at an example of measuring an object in millimetres. Our first example will be an object with a length that is less than 1 cm long. Here we have a button and we will measure its width by lining up the leftmost part of the button with the zero line on the ruler as shown below.
We count the number of lines that we have until the lines on the ruler line up with the rightmost part of the button. There are 8 lines and so, the button is 8 mm wide. We could have counted 8 lines from zero, or we could have looked at the 5 mm line that is in the middle of 0 and 1 cm. From here we have another 3 millimetre lines. The button lines up with a line that is 2 lines away from 1 cm. Below is an example of measuring the side length of a die. Again we line the left side of the die up with the zero line on the ruler.
Not Helpful 1 Helpful 4. Multiply 36 x 27 x 28, then divide by 16, The answer will be in cubic inches. Or convert all measurements to inches first, then multiply.
There are Not Helpful 2 Helpful 4. I need to get a shredder that shreds the paper to 1 mm x 5 mm or smaller. Convert each millimeter measurement to centimeters by dividing each number by Then multiply the three new numbers together.
Or you could multiply the three mm measurements together, and divide by 1, In either case the answer would be in cubic centimeters. Not Helpful 1 Helpful 3. Because one centimeter equals 10 millimeters, 5 cm is 50 mm, and 5 cm 4 mm is 54 mm.
Is there a metric measurement smaller than a millimeter? What is the metric equivalent to one 64th of an inch? There are many metric units much smaller than a millimeter. See Section 4 of Wikipedia's article on the metric system. Not Helpful 2 Helpful 2. Include your email address to get a message when this question is answered. Knowing how to measure millimeters is a useful skill.
The dimensions of many common products and specialty items are given in millimeters, including tools and building materials, electronic components, eyeglass lenses, and jewelry. Helpful 2 Not Helpful 0. The metric system is known today by a different name: the International System of Units SI for short.
However, both of these names refer to the same units of measurement. Helpful 1 Not Helpful 0. Submit a Tip All tip submissions are carefully reviewed before being published. Related wikiHows How to. How to. More References 5.
About This Article. Co-authored by:. Co-authors: 7. Updated: November 1, Article Summary X To easiest by to measure millimeters is with a metric ruler or meter stick. Now that the "zero" mark on your ruler is lined up with one edge of the object you're measuring, read along the ruler until you reach the far edge of the object being measured.
Because the marks on a mm ruler are quite small and aren't numbered, it may help to put your finger, or the point of a pen or pencil, down to help you keep your eye on the correct mark. Next, count the number of millimeter marks, starting from the zero line of the ruler and continuing until you reach the mark that lined up with the far edge of your object. The number of marks equals the object's measurement in millimeters.
You don't actually need to count every single millimeter mark along the ruler — you can use the numbered centimeter marks as a shortcut. Each centimeter is equal to 10 millimeters, so if your object measures 4 centimeters long, that's equivalent to:. Often, your measurement in millimeters will fall between centimeter marks on the ruler. In that case, count centimeters up until the mark just before your measured object, then add in however many more millimeter marks it takes to reach the line you measured to.
Once you understand that 1 centimeter is 10 millimeters, you don't need to do the multiplication to convert between these two units of measure. Just count by tens for each centimeter mark. For example, if you'd measured an object that reaches up to the 5 centimeter mark and then another 5 millimeters beyond that, instead of counting "one Before you actually start measuring things with your ruler, the first step is to master the process of ruler counting.
Locate the zero end of the ruler, and then count each individual mark along the edge of the ruler. Each mark represents 1 millimeter or mm, so counting five marks is the same as counting 5 millimeters, counting 10 marks is the same as counting 10 millimeters and so on. Once you're comfortable with ruler counting in millimeters, it's time to transition to taking actual measurements. Keep in mind that because your ruler is straight, it can only be used to measure straight distances.
Place the flat end of the ruler against whatever it is you're measuring, and line the zero mark on the ruler up with one end of the object to be measured. Next, starting from the zero end of the ruler, count the marks along the ruler just as you did for "ruler counting. Once you reach the other edge of the object you're measuring, stop.
Remember that however many marks you've counted along the ruler equal the number of millimeters you've measured. So if you counted 23 marks to reach the far end of the object, it's 23 millimeters long; if you counted 46 marks to reach the far end of the object, it's 46 millimeters long; and so on. Although you could just count millimeters along your ruler from one end to another, there's an easier way.
Instead of counting every millimeter, count the larger marks on the same side of the ruler that represent centimeters, until you're close to — but not past — the edge of whatever you're measuring.
Multiply the number of centimeters you counted by 10, and then keep counting millimeters from there. Why does this work?
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