test yourself unit 2 foundation qs
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Unit 2Unit 2FormulasFormulas
FoundationFoundation
10 % divide by 10 % divide by 1010
Estimate meansEstimate means
round and workout!round and workout!
The x axis is called y=0The x axis is called y=0
The y axis is called x=0The y axis is called x=0
Speed = distance ÷ timeSpeed = distance ÷ time
The opposite of square is The opposite of square is square rootsquare root
The opposite of cube isThe opposite of cube is cube root cube root
y x y = y²y x y = y²
y + y = 2yy + y = 2y
Equation of a straight line isEquation of a straight line is
y = +/- gradient y = +/- gradient xx +/- +/- InterceptIntercept
The Rules of indicesThe Rules of indices
aa44 x a x a5 5 = a = a99
aa77 ÷ a ÷ a3 3 = a = a44
(a(a66))3 3 = a= a18 18
ParallelParallel lines lineshave the same have the same
gradientgradient
A number in Standard A number in Standard Form is in two partsForm is in two parts
3.6 x 103.6 x 1066
To add and subtract To add and subtract fractionsfractions
the denominators must the denominators must be the samebe the same
To multiply fractions we To multiply fractions we multiplymultiply
top by top top by topbottom by bottombottom by bottom
Negative x negative = Negative x negative = PositivePositive
Positive x negative = Positive x negative = negativenegative
To divide fractions weTo divide fractions we
invert invert the second fractionthe second fraction
and multiplyand multiply
Solve meansSolve means
to find the value of to find the value of
x= or y=x= or y=
Simplify meansSimplify means
collect all the like terms.collect all the like terms.
Expand meansExpand means
remove the bracketsremove the brackets
Factorise meansFactorise means
put the brackets back in.put the brackets back in.
Factor (outside bracket)Factor (outside bracket)
Change the subjectChange the subjectmeansmeans
rearrange legally!!!rearrange legally!!!
Expanding double Expanding double bracketsbrackets
( x + 4 )( x - 3 )( x + 4 )( x - 3 )
Order of OperationsOrder of Operations
BracketsBracketsIndicesIndicesdivisiondivision
MultiplicationMultiplicationAdditionAddition
SubtractionSubtraction
Inequalities Inequalities
treat like antreat like an
equalsequals
For sequences find the For sequences find the ‘goes up in’‘goes up in’
and adjust.and adjust.