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4 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Prime Numbers |
A natural number greater than 1 is prime if it is divisible only by itself and the unit. |
2| 101| 239| 383| 547 3| 103| 241| 389| 557 5| 107| 251| 397| 563 7| 109| 257| | 569 11 13 17 19 23 29 31 37 41 43 47 |
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Divisibility |
Divisibility is a property of an integer number to be divisible by another number. The rules for divisibility are used to know if a number n is divisible by another number m without solving the division. |
By 2: A number is divisible by 2 if it's last digit is 0 or an even number. By 3: A number is divisible by 3 if the sum of its digits is divisible by 3. By 4: A number is divisible by 4 if it's last 2 digits are 00 or form a number which is divisible by 4. |
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Proportion and Properties Properties Properties |
A ratio is a relationship between two numbers of the same kind, usually expressed as 'a to b' or a:b In a proportion a:b=c:d the terms a and f are called antecendents, the terms b and d are called consequent, a and d are said extremes, b and c are means. |
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Operations Properties |
Properties of arithmetic operations on numerical sets, with a b c genetic elements of the set. Associativity of Addition A+(b+c)=(a+b)+c=a+b+c Communativity of Addition A+b=b+a |
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