Simple Tricks To Find the Prime Numbers - 1 to 100
Quick Way to Find a Prime Numbers
What is Prime Number
Prime numbers are whole numbers greater than 1. Each prime number has exactly 2 factors.
Prime Number Facts
1) The number 1 has only one factor.
2) The number 1 is neither prime not composite.
3) The number 2 is the smallest prime number.
4) The number 97 is the largesttwo digit prime number.
5) The only even prime number is 2.
6) Zero and 1 are not considered prime numbers.
Tricks to find the Prime number 1 to 100 in 2 minutes.
Step1:
Draw the table and fill the numbers 1 to 100.
Step2:
Circle the prime number 2 and then cross out every second number. This means you have crossed out all multiples of 2.
Step3:
Circle the next prime number 3 and then cross out every third number. This means you have crossed out all multiples of 3.
Step4:
Circle the next prime number 5 and then cross out every fifth number. This means you have crossed out all multiples of 5.
Step5:
Circle the next prime number 7 and then cross out the mutiples of 7 that are not crossed out.
Step6:
The number not crossed out are all prime numbers.
2 , 3 , 5 , 7 , 11, 13 , 17 , 19 , 23 , 29 , 31 , 37 , 41 , 43 , 47 , 53 , 59 , 61 , 67 , 71 , 73 , 79 , 83 , 89 , 97
Download Prime Number Tricks Document
Math Prime Number Trick Document. You can download and practice it in offline.
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