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Contents
Index laws
1.) when multiplying two powers of the same
number (or letter) you add the indices.
for example-23 × 24 =(2 × 2 × 2)×(2 × 2 × 2 × 2)
= 27…read more

Slide 3

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2.) When dividing two powers of the same number you subtract Contents
the
indices. For example-
25 ÷ 22 = 23
3.) to raise a power to a further power multiply the indices together.
For example-
(22)4 = (2 × 2) × (2 × 2) x (2 × 2) × (2 × 2) = 284
4.) anything to the power of 0 is one.
5.)If you have a number raised to a negative power, this is equal to 1
divided by the number raised to the power made positive. In other
words, you invert it.
n-a = 1/na.
Some Examples
n-1 = 1/n.
3-2 = 1/32 = 1/9
(½)-3 = 23 = 8…read more

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Contents
Area
Area of triangle= 1/2base x height…read more

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Contents
Area of parallelogram= base x perpendicular
height…read more

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Contents
Area of trapezium= ½(sum of parallel sides) x
distance between them.
Can you work out the area of this
shape?
To work out the area of this shape add
together the two parrallel sides
(23+17 = 40) and multiply by the
difference inbetween (15cm)…read more

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