Multiples and Factors
Types of no.
Linear sequences
1 Multiples and factors
Annotations:
A multiple appears in it's "Times Table"
A factor of a No° is any whole
No° that ÷ into it exactly. - Always come in pairs except prime numbers = Lone pairs
1.1 Tests for divisability
Annotations:
x 2 = Even
x 5 = End in 5 / 0
x 10 = End in 0
x 3 = Sum of digits ÷ 3
x 9 = Sum of digits ÷ 9
x 4 = Last 2 digits ÷ 4
x 8 = If ½ is ÷ 4
x 6 = ÷ by 2 & 3