Identify each number from 1 to 100 as either composite, c or prime, p
| 1 | is not a prime number |
| 2 | is a prime number |
| 3 | is a prime number |
| 4 | is a composite number = 2x2 |
| 5 | c or p |
| 6 | c or p |
| 7 | c or p |
| 8 | c or p |
| 9 | c or p |
| 10 | c or p |
| 11 | c or p |
| 12 | c or p |
| 13 | c or p |
| 14 | c or p |
| 15 | c or p |
| 16 | c or p |
| 17 | c or p |
| 18 | c or p |
| 19 | c or p |
| 20 | c or p |
| 21 | c or p |
| 22 | c or p |
| 23 | c or p |
| 24 | c or p |
| 25 | c or p |
| 26 | c or p |
| 27 | c or p |
| 28 | c or p |
| 29 | c or p |
| 30 | c or p |
| 31 | c or p |
| 32 | c or p |
| 33 | c or p |
| 34 | c or p |
| 35 | c or p |
| 36 | c or p |
| 37 | c or p |
| 38 | c or p |
| 39 | c or p |
| 40 | c or p |
| 41 | c or p |
| 42 | c or p |
| 43 | c or p |
| 44 | c or p |
| 45 | c or p |
| 46 | c or p |
| 47 | c or p |
| 48 | c or p |
| 49 | c or p |
| 50 | c or p |
| 51 | c or p |
| 52 | c or p |
| 53 | c or p |
| 54 | c or p |
| 55 | c or p |
| 56 | c or p |
| 57 | c or p |
| 58 | c or p |
| 59 | c or p |
| 60 | c or p |
| 61 | c or p |
| 62 | c or p |
| 63 | c or p |
| 64 | c or p |
| 65 | c or p |
| 66 | c or p |
| 67 | c or p |
| 68 | c or p |
| 69 | c or p |
| 70 | c or p |
| 71 | c or p |
| 72 | c or p |
| 73 | c or p |
| 74 | c or p |
| 75 | c or p |
| 76 | c or p |
| 77 | c or p |
| 78 | c or p |
| 79 | c or p |
| 80 | c or p |
| 81 | c or p |
| 82 | c or p |
| 83 | c or p |
| 84 | c or p |
| 85 | c or p |
| 86 | c or p |
| 87 | c or p |
| 89 | c or p |
| 90 | c or p |
| 91 | c or p |
| 92 | c or p |
| 93 | c or p |
| 94 | c or p |
| 95 | c or p |
| 96 | c or p |
| 97 | c or p |
| 98 | c or p |
| 99 | c or p |
| 100 | c or p |
All numbers in the body of the math facts table have factors other than 1 and itself. Thus, if you can find the number in the body of the math facts table, it is a composite number.
| Math facts: from 2x2 to 15x15 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 30 | 45 | 60 | 75 | 90 | 105 | 120 | 135 | 150 | 165 | 180 | 195 | 210 | 225 |
| 14 | 28 | 42 | 56 | 70 | 84 | 98 | 112 | 126 | 140 | 154 | 168 | 182 | 196 | 210 |
| 13 | 26 | 39 | 52 | 65 | 78 | 91 | 104 | 117 | 130 | 143 | 156 | 169 | 182 | 195 |
| 12 | 24 | 36 | 48 | 60 | 72 | 84 | 96 | 108 | 120 | 132 | 144 | 156 | 168 | 180 |
| 11 | 22 | 33 | 44 | 55 | 66 | 77 | 88 | 99 | 110 | 121 | 132 | 143 | 154 | 165 |
| 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 140 | 150 |
| 9 | 18 | 27 | 36 | 45 | 54 | 63 | 72 | 81 | 90 | 99 | 108 | 117 | 126 | 135 |
| 8 | 16 | 24 | 32 | 40 | 48 | 56 | 64 | 72 | 80 | 88 | 96 | 104 | 112 | 120 |
| 7 | 14 | 21 | 28 | 35 | 42 | 49 | 56 | 63 | 70 | 77 | 84 | 91 | 98 | 105 |
| 6 | 12 | 18 | 24 | 30 | 36 | 42 | 48 | 54 | 60 | 66 | 72 | 78 | 84 | 90 |
| 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 |
| 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 |
| 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 | 27 | 30 | 33 | 36 | 39 | 42 | 45 |
| 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |