Numbers
4 X 4
16
16/4=
4
4 x 6
24
12
Prime or Composite ?
Composite
Brian's exercise routine includes 8 jumping jacks a day. How many jumping jacks does he do every week?
8 jumping jacks x 7 days a week =
56 jumping jacks !
The factors of 25 are:
1, 5, 25
1 × 25 = 25
5 × 5 = 25
4 x 8=
32
18/6=
3
6 x 7
42
37
Prime or Composite ?
Prime
Is the first number a multiple of the second number?
32, 6
NOOO
The factors of 33 are:
1, 3, 11, 33
1 × 33 = 33
3 × 11 = 33
6 x 8
48
30/6=
5
Five multiples of 3 (not including 3)
6, 9, 12, 15, 18
45
Prime or Composite ?
Composite
Name the first 3 multiples of 12 (not including 12)
24, 36, 48
The factors of 63 are:
1, 3, 7, 9, 21, 63
1 × 63 = 63
3 × 21 = 63
7 × 9 = 63
6 x 9=
72/9=
8
Four multiples of 4 (not including 4)
8, 12, 16, 20
59
Prime or Composite ?
Prime
Name the first five multiples of 9 (not including 9)
18, 27, 36, 45, 54
The factor pairs of 24 are:
1, 2, 3, 4, 6, 8, 12, 24
1 × 24 = 24
2 × 12 = 24
3 × 8 = 24
4 × 6 = 24
9 x 8
72
8 remainder 3
Name the first five multiples of 7 (not including 7)
14, 21, 28, 35, 42
66
Prime or Composite ?
Composite
In Laurynn’s sports-card collection, 3/4 of the cards are baseball cards. In Lior’s collection, 9/12 are baseball cards. Lior says they have the same fraction of baseball cards. Is he correct?
Yes
The factors of 48 are:
1, 2, 3, 4, 6, 8, 12, 16, 24, 48
1 × 48 = 48
2 × 24 = 48
3 × 16 = 48
4 × 12 = 48
6 × 8 = 48