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19 Cards in this Set
- Front
- Back
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What is a prime number? |
It is a number that can only be divided by itself and one |
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Is 1 a prime number? |
no |
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What are the prime numbers under 50? |
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47 |
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What does LCM stand for? |
Lowest Common Multiple |
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What is a multiple? |
A number that is in the multiplication table of that number |
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Give the first 5 multiples of 8. |
8, 16, 24, 32, 40 |
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When given two numbers how do you find the Lowest Common Multiple of them? |
You factorize them and write the numbers out.Then you multiply the common factors (only once) by the left overs. |
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What is a factor? |
It is a number that can be divided into the number |
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What does HCF mean? |
Highest Common Factor |
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How do you find the HCF of two numbers? |
Factor tree the two numbers and multiply only the common numbers once together. |
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What is a square number? 2^2 |
a number multiplied by itself = 2 x 2= 4 |
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What is a square root? √ Example- √4 |
2 |
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What is an odd number? |
1, 3, 5, 7, 9 .... |
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What is an even number? |
2, 4, 6, 8, 10, 12... |
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What is a natural number? |
Whole positive numbers |
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What are integers? |
negative and positive numbers |
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What are rational numbers? |
Integers and their decimal/fractions that terminate. |
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What are irrational numbers? |
All numbers that are not perfect squares... |
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What are factor pairs of a number? ex) 12 |
All the different numbers multiplied together to equal that number |
