Page 9 - Math Smart - 7

Check My
Understanding Speed Challenge

O List the factors of each of the following,
Factor race
a) 9 b) 16 c) 48
d) 99 e) 49 f) 13 O into groups of 4.
O Write a factor list for each of the following. O Race to complete the
factor list of each
a) 12
number that the
b) 7
teacher calls out.
c) 16
O When your group has
d) 21
completed the factor
e) 50
list, raise your hand.
f) 48
O The group that
O Cross out the incorrect number(s) in each factor list, completes the factor
a) 1,2,3,4,6,9,18 b) 1,2,3,7,9,27 list first, wins the
round.
c) 1,5,5,25 d) 1,2,4,5, 10, 15,20,25,50, 100
@ Compare your factor
O State whether the statements are true or false. If false, rewrite the list to the complete
statement to make it true. factor list that your
a) 2 is a factor of every natural number teacher writes on the
b) 1 is a factor of every natural number board.
c) 6 Is a factor of 34
d) 38 is a factor of 38

o Spotlight
Prime numbers
Natural numbers are the
set of positive numbers,
mbers.
Investigate! from 1 onwards. TheyThey g
CO
are whole numbers
Refer to the numbers in the box. excluding zero.
a) Write a factor list for each of the numbers in the table.
CO
Number Factor list
100 27
1

53
30

13
24

b) List the numbers that have only two factors.

O