Lesson1 number properties (1)
- 1.
- 2. Operations Add & Subs Example: Is X an integer? (1) 4X is an integer.
- 3. Factors Definition: Characteristics: Only positive integers are considered. The integer must be an exact divisor.
- 4. Even - Odd Even Exponentials Odd Operations: Add & Subs
- 5. Primes Definition: Primenumbers are those that only have two factors: 1 and itself Example: from 0 to 40 : {2,3,5,7,11,13,17,19,23,29,31,37} Obs: 0 and 1 are not primes. 2 is the first and only even prime. From 3 in advance, all odd numbers.
- 6. Divisibility Digits: {0,1,2,3,4,5,6,7,8,9} Even digits: {0,2,4,6,8} Odd digits: {1,3,5,7,9} 2 5 3 6 4 9
- 7. Fractions Operations: Add & Subs Numerator Denominator If… Mix fraction 1 Proper fraction
- 8. Mix Fractions Operations: Examples: Add & Subs
- 9. Comparing Fractions Strategy: Simplify the most Examples: