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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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The highest number that divides exactly into two or more numbers.
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Greatest Common Factor
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It is the "greatest" thing for simplifying fractions
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A ________________ can be divided evenly only by 1 or itself.
And it must be a whole number greater than 1 |
Prime Number
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A ________________ can be divided evenly by numbers other than 1 or itself.
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Composite Number
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Example: 9 can be divided evenly by 1, 3 and 9, so 9 is a composite number.
But 7 can only be divided evenly by 1 and 7, so 7 is NOT a composite number (it is a Prime Number). |
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The smallest (non-zero) number that is a multiple of two or more numbers.
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Least Common Multiple
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The multiples of 4 are: 4,8,12,16,20,24,28,32,36,40,44,...
The multiples of 5 are: 5,10,15,20,25,30,35,40,45,50,... So the Least common multiple is 20 |
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Is the Law that says you can swap numbers around and still get the same answer when you add. Or when you multiply.
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Commutative Law
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a + b = b + a
or a × b = b × a |
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This law says, It doesn't matter how you group the numbers when you add. It doesn't matter how you group the numbers when you multiply.
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Associative Law
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(a + b) + c = a + (b + c)
or (a × b) × c = a × (b × c) |
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The ________________ means that you get the same answer when you multiply a number by a group of numbers added together as when you do each multiplication separately
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Distributive Law
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a × (b + c) = a × b + a × c
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A symbol for a number we don't know yet. It is usually a letter like x or y.
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Variable
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Example: in x + 2 = 6, x is the ___________
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Numbers, symbols and operators (such as + and ×) grouped together that show the value of something.
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Expression
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Example 2×3
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It is simply: 1/number
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Reciprical
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5's reciprocal is 1/5
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a/1 x1/a=?
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the product of a number and it's reciprocal
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Area of a triangle formula
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A = b x h / 2
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Area of a circle
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A = π × r squares
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Circumference of a circle
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πd or 2πr
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Computing volume
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cube = a x a x a
rectangular prism = a x b x c irregular prism = b h cylinder = b h = pi x r squared x h pyramid = (1/3) b x h cone = (1/3) b h = 1/3 x pi x r squared x h sphere = (4/3) x pi x r cubed ellipsoid = (4/3) x pi x r1 x r2 x r3 |
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