Subtracting Three Digit Numbers. How to subtract three digit numbers (for example 658 - 472). 1  Place one number above the other so that the hundreds', tens' and ones' places are lined up. 2  Draw a line under the bottom number.
A: In math, a pictogram or pictograph is the use of pictures or images to present data. To make a pictogram, a table of data is constructed with an accompanying key. An example of a pictograph is one that shows how many apples are eaten by student for lunch during a 5-day week.
A pictogram, also called a pictogramme, pictograph, or simply picto, and also an ' icon ' , is an ideogram that conveys its meaning through its pictorial resemblance to a physical object.arly written symbols were based on pictographs (pictures which resemble what they signify) and ideograms (symbols which represent ideas). Ancient Sumerian, Egyptian, and Chinese civilizations began to adapt such symbols to represent concepts, developing them into logographic writing systems.