End Of Year Maths Test Flashcards
Laws of indices
When multiplying powers with the same base
Dividing powers with the same base then subtract indices
When raising one power to another then multiply the indices
Anything to the power of 1 is itself
Anything to the power of 0 is 1
Laws of indices example
3 squared x 3 sixth =3 indices 8
Fractional indices
If the index 1/2 then you replace the power with the square root
If the index 1/3 then replace the powrt with the cube root
If the index 1/m then you replace the power with the mth root
Fractional indices example
a 1/5 5 root a
Common factors
Factorising is the opposite of expanding brackets . Is an expression.
Quadratic
A quadratic expression is an expression wher the highest power of the variable they have the form of ax squared + bx+ c where a, b and c are constants. You can factorise some quadratic into the form, but jtx usually not clear what. The method depends on whether ot not there’s a number.
Circle theorems
Circumference: the distance around the outside of a circle
Radius: a line from centre of a circle to the edge.
Diameter: a line from one side of a circle to the other through the centre . The diameter is twice the radius. d=2r
Tangent
A straight line that just touches the circle
Arc
A part of the circumference
Chord
A line between two points on the edge of the circle
Sector
An area of a circle like a slice of pie
Segment
An area of a circle between an arc and a chord
Circle theorems rule 1
A triangle formed by two radii is isosceles
Rule 2
A tangent to a circle makes a right angle with the radius at that point
Rule 3
Then agle in a semicircle is a right angle