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| a number that doesn't contain a fraction or a decimal |
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| numbers that are less than zero |
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| numbers that are greater than zero |
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| refers to a number that isn't negative |
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| integers not divisible by 2 |
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| answer to a subtraction problem |
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| answer to an addition problem |
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| answer to a multiplication problem |
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| answer to a division problem |
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| numbers that progress in order |
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PEMDAS
(paranthesis)(exponent)(multiply/divide)(add/subtract) |
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zero basics
any number raised to the power of 0 is 1 |
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| what's left over after dividing |
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| when one number divides into another with no remainder |
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| a number that divides evenly into another number |
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| a number divisible by that number |
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any positive integer that's divisble by ONLY 1 and itself
- 1 is NOT prime |
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| letters used to represent an unknown number |
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| the union of two sets is the collection of all the distinct numbers in those sets |
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| the intersection of two sets is the dinstinct collection of members that appear in BOTH sets |
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| 4-sided figure that has opposites sides parallel and equal, and area = b x h |
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-opposite sides are equal
-all 4 angles are 90 degrees |
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-all sides are equal
-all angles are equal to 90 degrees |
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| divides something into two equa parts |
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| two lines are perpendicular when they meet at 90 degrees |
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| when two lines intersect, the opposite angles are vertical angles |
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-angles add up to 180 degrees
-a = 1/2 bh |
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2 sides are equal
angles opposite the equal sides are equal |
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-all 3 sides are equal
-all angles are 60degrees |
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2: Any even number is divisible by 2.
3: Add up all the digits in the number, and if the sum is divisible by 3, the number itself is divisible by 3.
4: Take the last 2 digits of the number, and if together as a 2-digit number they are divisible by 4, the number itself is divisible by 4.
5: Any number that ends in a 5 or a 0 is divisible by 5.
6: A number is divisible by 6 if it follows the rules for 2 and 3.
9: Add up the digits, and if their sum is divisible by 9, the number itself is divisible by 9.
10: Any number ending is 0 is divisible by 10 |
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