Numbers 1 - 50 Flashcards
2
Prime
Factors: 1, 2
Multiples: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24
3
Prime
Factors: 1, 3
Multiplies: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36
4
2 x 2
Factors: 1, 2, 4
Multiples: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48
5
Prime
Factors: 1, 5
Multiples: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60
6
2 x 3
Factors: 1, 2, 3, 6
Multiples: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72
7
Prime
Factors: 1, 7
Multiples: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84
8
2 x 4
Factors: 1, 2, 4, 8
Multiples: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96
9
3 x 3
Factors: 1, 3, 9
Multiples: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108
10
2 x 5
Factors: 1, 2, 5, 10
Multiples: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120
11
Prime
Factors: 1, 11
Multiples: 11, 22, 33, 44, 55, 66, 77, 88, 99, 110, 121, 132
12
2 x 6
3 x 4
Factors: 1, 2, 3, 4, 6, 12
Multiples: 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144
13
Prime
Factors: 1, 13
Multiples: 13, 26, 39, 52, 65, 78, 91, 104, 117, 130, 143, 156
14
2 x 7
Factors: 1, 2, 7, 14
Multiples: 14, 28, 42, 56, 70, 84, 98, 112, 126, 140, 154, 168
15
3 x 5
Factors: 1, 3, 5, 15
Multiples: 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180
16
2 x 8
4 x 4
Factors: 1, 2, 4, 8, 16
Multiples: 16, 32, 48, 64, 80, 96, 112, 128, 144, 160
17
Prime
Factors: 1, 17
Multiples: 17, 34, 51, 68, 85, 102, 119, 136, 153, 170
18
2 x 9
3 x 6
Factors: 1, 2, 3, 6, 9, 18
Multiples: 18, 36, 54, 72, 90, 108, 126, 144, 162, 180
19
Prime
Factors: 1, 19
Multiples: 19, 38, 57, 76, 95, 114, 133, 152, 171, 190
20
2 x 10
4 x 5
Factors: 1, 2, 4, 5, 10, 20
Multiples: 20, 40, 60, 80, 100, 120, 140, 160, 180, 200