toolbox" Flashcards
1
Q
how many numbers are there between 1 and 567?
counting numbers
A
567 numbers
2
Q
how many numbers are there between 6 and 567?
A
567-5
(1-567)- (1-5), coz 6 is included
3
Q
How many numbers between 242 and 783 are divisibe by 6?
A
4
Q
Memorise these algebraic identities
A