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# !!! Marvellous Memory Mathmatics !!!

The Travel Through The World Of Maths . . .
by

## Beth Daire

on 30 April 2010

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#### Transcript of !!! Marvellous Memory Mathmatics !!!

Circumference
Of A
Circle . . . The area
of a
circle . . . The diameter . . . To get the area:

Half the diameter, to get the radios.
Then times it by itself.
Afterthat, times it by pie !!! !!! Marvellous Memory Mathamatics !!! To get the area of a cicle:

Half the diameter, to get the radius.
Them times it by itself.
Afterthat, times it by pie !!! To get the Radius . . .
Just, half the diameter !!! The Circumference = The
length around the outside
of the circle. To find the
circumference,
you [simply]
times the
diameter
by pie
!!! The Radius The Diameter is always
from one side of the
circle, to the other !!! Oh . . . Just to
point out . . .
It DOES NOT have to
be from left to right. . .
It could be from top to bottom,
Well anywhere you can think
of !!! But ONLY in
the circle :) The Circle Of Circles . . . . . . Averages . . . Mode . . . The mode is the value,
That appears most . . .

To work out the mode:
Numbers =
7 11 9 6 6 11 3 13 6

2) Put the numbers in order:

3 6 6 6 7 9 11 11 13

3) Look for the number that appears
the most . . . . . .

6 appears more tha any other number.
So the MODE value, is 6 !!!!!!!!! Median . . . The median is the middle value.

To work out the median:

1) Put the numbers in order:

3 6 6 6 7 9 11 11 13

2) The number in the middle of the list is the median.
So the median value is 7.

If there are two middle values, the median is halfway between them. Work out the median for this set of numbers:

3 6 6 6 7 8 9 11 11 13

There are two middle values, 7 and 8.
The median is halfway between 7 and 8, so the median is 7.5.
Mean . . . The mean is the total of the numbers divided by how many numbers there are.

To work out the mean:

7 + 9 + 11 + 6 + 13 + 6 + 6 + 3 + 11 = 72

2.Divide the answer by how many numbers there are.
There are 9 numbers.
72 ÷ 9 = 8
So the mean value is 8.

Range . . . The range is the difference between the biggest and the smallest number.

To work out the range:

1.Put the numbers in order:
3 6 6 6 7 9 11 11 13

2.Subtract the smallest number from the biggest number:
13 - 3 = 10
So the range of this set of numbers is 10.
. . . .Solving Simple Equations . . . Do you go blank when you
see x, y and z in maths? Well, this is
solving equations. In an equation, letters stand for a missing number. To solve an equation, find the values of missing numbers. A typical exam question is:

Solve the equation 2a + 3 = 7

This means we need to find the value of a. The answer is a = 2

The method you can use when trying to solve this type of problem is:

7 - 3 = 4
Then, What goes into 4 . . . . .
. . . . . . . . . . .

. . . . . . . . . . .

. . . . . . . . . . .

2
a = 2 !!!!!!!!!!!!!!!!
Solve the equation 2y = 6 to find the value of y. To get y on its own, we need to divide it by 2. As you already know, you must always perform the same operation on both sides of the equation.

2y ÷ 2 = 6 ÷ 2
y = 3 . . . The Answer Is . . . ARE YOU READY ? Have you got the answer ?
Thankyou For Watching
:)
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