maths

Question 1

what are decimal number?

Answer 1

are sets of numbers that has a dot between them that is called a decimal point

ex. 45.788 - underline 8
ans=45.79

Question 2

what are significant figures?

Answer 2

Significant figures are the number of digits in a value.
ex. write this number with 5 figures

105.8054=105.81

Question 3

what is standard form or significant figures?

Answer 3

Scientific notation is a way of expressing numbers that are too large or too small

ex. 35000. = 3.5 x 10(4)
0. 00392=3.92x10(-3)

when the decimal point is moving to the left its positive
when it moving to the right its negative