Karteikarten
Maths Revision
Karten in diesem Stapel (24)
- 1Pythagoras' Theoremc²=a²+b²
22=x²+15²
484=x²+225
x²=484-225
x²=259
x=16.1 - 2Area and Circumferencearea of a rectangle = length x width
area of a triangle = base x height * 2
area of a parallelogram = Base x Height
Radius - 5cm /circumference-10π
Diameter-10cm / Area - 25π² - 3Area and CircumferenceHow to find them...
RADIUS-D*2=RADIUS
DIAMETER-5+5=10
CIRCUMFERNCE-πx10=10π
AREA-πx5²=25π² - 4Area and Perimeter of a circleRadius - 7m
Diameter - 14m
Area - πx7²
Circumference - πx14=14π - 5Perimeter of a Circlecircumference - 8πm
curve - c*4=2πm
2π+4+4=(2πx8)m - 6Expanding BracketsIn maths to 'expand' usually means 'multiply out' for example, expressions such as 3(y*2) and 4y²(2y+3) can be expanded by multiplying them out.
- 7expanding bracketsso in this case, the two examples on the other card...
3(y*2)=3x(y+2)=3xy+3x2=3y+6
4y²(2y+3)=4y²x(2y+3)=4y²x2y+4y²x3=8y²=12y² - 8Primes, LCM and HCFLCM-Lowest Common Multiple
HCM-Highest Common Factor
Primes any Number that has a factor of 2 and itself - 9AveragesAverage is a term you will often use when describing or comparing sets of data. There are several ways of expressing an average, but the most commonly used averages are the Mode, Median and Mean
- 10Angles-BisectorsTo bisect means to divide in half(into 2). so a bisector divides something into 2 equal half's .A line Bisector divides a straight line into 2 equal lines. An angle bisector is the straight line that divides and angle into 2 equal angles.
- 11IndicesPowers (indices) are a convenient way of writing repetitive Multiplications.
The powers(indices) tell you the number of times a number is multiplied by itself for example...
4²=4x4, 2 lots of 4 multiplied - 12Standard Form10
- 13Area and PerimeterCircumference - 8πm
Curve - C*4=2πm
2π+4+4=(2πx8)m - 14Expand BracketsIn maths to 'expand' usually means to 'multiply out' for example an expression such as 3(y*2) can be expanded by multiplying it out. so in this case,
3(y*2)=3x(y+2)=3xy+3x2=3y+6 - 15Primes, LCM,HCFLCM - Lowest Common Multiple
HCF - Highest Common Factor
Primes - Any number that only has 2 factors, for e.g. 1 and itself - 16AveragesAverage is a term you will often use when describing or comparing sets of Data. There are several ways of expressing an average , but the most commonly used averages are the Mode, Mean and Median
- 17Angles-BisectorsTo Bisect means to divide in half, so a bisector divides something into 2 equal parts. a line bisector divides a straight line into 2 equal straight lines. An angle bisector is the straight line that divides and angle onto 2 equal parts
- 18IndicesPowers(indices) are a convenient way of writing repetitive multiplications .The power (indices) tell you the number of times a number is multiplied by itself, for example
4²-4x4, 2 lots of 4 multiplied - 19Standard FormAlways remember to times by 10!
10² = 100 - 20SurdsSurds are where we can simplify a number to remove the square root, (cubed ect) then its a surd
- 21Surds - Multiply...5 x 8 = 40
Times 5 by 8
the answer will always be the same as with out square root - 22Surds - Simplify...40 = 4x10 -Square
4 x 10 - Separate
2²
2x 10
remove the times
2 10 - 23Number SequencesA number sequence is an ordered set of numbers with a rule to find every number in the sequence.
example...
3,6,12,24...Double the last term...48
2,5,8,11...add 3...14,17
1,10,100,1000... x by 10...10,0000 - 24RatioJoys age : James age
5:20
1:4 (divided by 5)
A ratio is a way of comparing the sizes of 2 or more quantities
A ratio can be expressed in a number of ways
Informationen
- Beschreibung
- Karteikarten am Maths Revision, erstellt von Carla Hussey am 10/12/2015.
- Erstellt von
- Carla Hussey · Dez 2015
- Aktualisiert
- 12 Apr 2016
- Aufrufe
- 5
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