SIEVE OF ERATOSTHENES TO 200 - Prime Numbers Between 1 and 200

Oct 22, 2026

Uploaded by hdkawk

Step-by-step Sieve of Eratosthenes procedure to identify prime numbers from 2 up to 200: circle 2, cross out its multiples, move to the next uncrossed number (then circle it and cross out its multiples), repeating until the end of the range. Includes a grid of numbers 2–200 that visually marks the primes and a concluding question asking how many primes exist between 1 and 200, with the provided result.

LanguageEnglish

CategoryExam

FormatPDF

Pages2

Reading Time5 min

AccessFree to download

Sieve of Eratosthenes to 200

Steps to cross out multiples

Prime number grid (2–200)

Question: count primes between 1 and 200

Name Date SIEVE OF ERATOSTHENES TO 200 • Start at number 2. Put a circle it. Cross out all the multiples of that number. • Move on to the next number you have not crossed out (3) . Put a circle round it. Cross out all the multiples of that number. Repeat | | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | | 131 | 132 | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | | 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | | 151 | 152 | 153 | 154 | 155 | 156 | 157 | 158 | 159 | 160 | | 161 | 162 | 163 | 164 | 165 | 166 | 167 | 168 | 169 | 170 | | 171 | 172 | 173 | 174 | 175 | 176 | 177 | 178 | 179 | 180 | | 181 | 182 | 183 | 184 | 185 | 186 | 187 | 188 | 189 | 190 | | 191 | 192 | 193 | 194 | 195 | 196 | 197 | 198 | 199 | 200 | How many prime numbers are there between 1 and 200? Name Date SIEVE OF ERATOSTHENES TO 200 ANSWERS • The numbers highlighted are all primes. | | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | | 131 | 132 | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | | 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | | 151 | 152 | 153 | 154 | 155 | 156 | 157 | 158 | 159 | 160 | | 161 | 162 | 163 | 164 | 165 | 166 | 167 | 168 | 169 | 170 | | 171 | 172 | 173 | 174 | 175 | 176 | 177 | 178 | 179 | 180 | | 181 | 182 | 183 | 184 | 185 | 186 | 187 | 188 | 189 | 190 | | 191 | 192 | 193 | 194 | 195 | 196 | 197 | 198 | 199 | 200 | How many prime numbers are there between 1 and 200? 46

FAQs

What is the first number to start circling in the sieve?

Start at number 2. Circle it first.

What do you do after circling a number in the sieve?

Cross out all multiples of that circled number, then move to the next number you have not crossed out.

How many prime numbers are there between 1 and 200?

The document provides the answer as 46.

Oct 22, 2026

Uploaded by hdkawk