Numbers Flashcards
1
Q
What is an irrational number?
A
A number which cannot be written as a fraction.
2
Q
Give an example of an irrational number.
A
π (3.141592654…)
3
Q
What type of number is √2 ?
A
Irrational
4
Q
What is a terminating decimal?
A
A decimal fraction that has a finite number of decimal places.
5
Q
What is a recurring decimal?
A
A decimal fraction in which a figure or a group of figures is repeated indefinitely e.g. 0.451…
6
Q
How do we tell if a fraction will terminate?
A
A fraction will terminate if the denominator’s prime factor decomposition is made up of 2 and/or 5 ONLY.
