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.
Hazard pictograms are one of the key elements for the labelling of containers under the GHS, along with: 1  an identification of the product; 2  a signal word â either Danger or Warning â where necessary. 3  hazard statements, indicating the nature and degree of the risks posed by the product.