Transcript Unit2SpacedLearning (50 secs)

STANDARD FORM
It’s a number between 1 and 10 times
by a power of 10.
e.g. 450 is 4.5 x 102
Use the exp button on the calculator
POWERS
•Add the powers when
multiplying
•Take away when dividing
•Power of 0 is 1
•Fraction powers: ½ is square
root, 1/3 is cube root
•Negative powers are 1 over
the positive power
FRACTIONS
•Fraction of – divide by the
bottom, times by the top.
•Add, subtract – make the
bottoms the same
•Divide – turn the 2nd fraction
upside down and times
COORDINATES
•For 3d coordinates follow the
axes as x,y,z
•To find midpoints add the x’s
then halve. Do the same for
the y’s and z’s.
ANGLES
•Parallel lines- the
FUZ is the CIA
•Bearings measure
clockwise from
North
LCM and HCF
•LCM is a multiple, so is
bigger than the start
numbers
•HCF is a factor, so is
smaller than the start
numbers
AREA
•Rectangle is length x width
•Triangle is height x base / 2
•Trapezium is (add parallel
sides) x height /2
•Compound shapes – split into
easier shapes then add
together
VOLUME
•Prisms – Area of front x
length
EXPANDING BRACKETS
•Two brackets together –
eyebrows and smiley face are 4
multiplies
FACTORISING BRACKETS
•Pick the x’s to times
together
•Pick the numbers to
times to the question
•Check the smiley
face to see if the x
term is right
STRAIGHT LINES
•Form is y=mx+c
•To plot the line, take 3
x values and find out the y
values that go with them
CIRCLE ANGLES
The angle between a
tangent and a radius is
90o