Area and Perimeter: What is the equation to find the area of a shape?

A right angled triangle has a base of 15cm and a height of 10cm. What is the area? Explain how you would work this out.

What is the equation to find the area of a trapezium?

Using the Chinese method, work out 2.32 x 0.7

What is the difference between and expression and an equation?

The bottom row of the table goes:

x | -8 | -5 | -2 | 0 | 4 | 7

Plot y= 3x +1

Just note:
The equation of a linear graph is written in the form y=mx+c. M tells us the gradient of the line. We call this the coefficient of x. C tells us where the graph crosses the y axis. We call this the y intercept

Prefixes for powers of 10
By the way, # means to the power of ....

tera - T - 10#12 - 1 000 000 000 000
giga - G - 10#9 - 1 000 000 000
mega - M - 10#6 - 1 000 000
kilo - k - 10#3 - 1000

Round these numbers to 3 s.f
1.) 6.3528
2.) 34.026
3.) 0.005708
4.) 150.932
5.) 0.00007835

a.) 4-6=
b.) 5-7=
c.) 2-4
d.) -1-1=
e.) -3-2=
f.) -4-(-1)=
g.) 3-(-4)=