Any time it deals with the number of something (soldiers that died, money made from the introduction of the steam engine, population growth, etc...), you need to use and understand math. You also need graphical reasoning skills (a part of math) in order to understand and analyze data associated with history.
the reason why a number line is important, is because it tells you the order of something, and is very useful in history, math and science
it is help
ask history teacher or math teacher
Caculator
Math is very useful. You may not realize it but you are always using math. From counting how many eggs to cook or paying for something you'll always need it. I personally don't love math but i know it will be extremely useful in my future.
be a MP Historian in political history
Counting statistics experiments are useful in math. This is what helps with numbers.
for distrance, food and health and wealth
They define irrational numbers
History is anon-example of math.
co'z it can be in what ever job math is useful beco'z its can fell ur mind fresh
Interest and percent I know. Proportions are useful for finding that.