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Factors
Question | Answer |
---|---|
What is Factoring? | Breaking down a number into smaller numbers that can be multiplied together to get the original number. |
What is a Prime Number? | A whole number that has exactly two factors: 1 and itself |
What are factors of 9? | 3x3, 1x3 |
Is 12 prime or composite? | Composite |
What is a Composite Number? | A whole number that can be broken down into two or more factors. |
Is 11 prime or composite? | Prime |
What is the divisibility rule for 2? | Last digit is 0, 2, 4, 6, 8 |
What is the divisibility rule for 3? | The sum of the digits must be divisible by 3. |
What is the divisibility rule for 4? | The last two digits must be divisible by 4. |
What is the divisibility rule for 8? | The last three digits must be divisible by 8. |
What is the divisibility rule for 10? | The last digit must be 0. |
What is the divisibility rule for 9? | The sum of the digits must be divisible by 9. |
What is the divisibility rule for 6? | The rules for 2 and 3 apply, the number has to be even. |
What is GCF? | Greatest Common Factor is the largest factor shared by two numbers. |
What is the GCF of 4 and 16? | 4 |
What is the GCF of 25 and 50? | 25 |
What is the LCM? | Least Common Multiple - the smallest number that is a multiple of both. |
Is the LCM larger or smaller than the 2 numbers being compared? | Larger |
Is the GCF larger or smaller than the 2 numbers being compared? | Smaller |
What is the LCM of 25 and 75? | 25 |
What is the LCM of 120 and 40? | 40 |
What is the LCM of 3 and 4? | 12 |
What is the LCM of 5 and 6? | 30 |