# Maths :)

Just some revision notes to read through!

3.5 / 5

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- Created by: Annieee
- Created on: 28-05-09 12:04

Maths :)Word Document 86.5 Kb

## Pages in this set

### Page 1

1. Number and Algebra.

Multiplying and dividing negative numbers

E.g.

-2*+4

2*4=8, and - * + is equivalent to -. So -2*+4=-8

-6*-3

6*3=18 and -*- is equivalent to +, so -6*-3 =+8

+6*-4/-2

+6*4= -24, -24/-2=+12

Key

-*+=-

-*-=+

-/-=+

-- = +

+-= -

1.

a) -7+8…

Multiplying and dividing negative numbers

E.g.

-2*+4

2*4=8, and - * + is equivalent to -. So -2*+4=-8

-6*-3

6*3=18 and -*- is equivalent to +, so -6*-3 =+8

+6*-4/-2

+6*4= -24, -24/-2=+12

Key

-*+=-

-*-=+

-/-=+

-- = +

+-= -

1.

a) -7+8…

### Page 2

Powers and roots

E.g.

4"3" = 4*4*4 = 64

( Most calculators have a squaring button )

/12.25 = 3.5

(Depending on your calculator, sometimes you type the square

root before the number, and sometimes the number comes first.

Make sure you can use your calculator.)

Prime Factors-

E.g.…

### Page 3

Paving slabs 1 metre square are used to put borders around

square ponds. Some examples are given below.

1*1 metre"2" pond

8 slabs

2*2 metre"2" pond

12 slabs

3*3 metre"2" pond

16 slabs

4*4 metre"2" pond

20 slabs

How many slabs would fit around a 5*5 metre"2" pond?

Answer= 24…

square ponds. Some examples are given below.

1*1 metre"2" pond

8 slabs

2*2 metre"2" pond

12 slabs

3*3 metre"2" pond

16 slabs

4*4 metre"2" pond

20 slabs

How many slabs would fit around a 5*5 metre"2" pond?

Answer= 24…

### Page 4

The angles F and A are corresponding angles.

The angles Z and M are alternate angles.

So

If there was a question that said:

Name a pair of angles that are alternate you would say...

Z and M are alternate angles

OR

Name a pair of angles that are corresponding…

### Page 5

The angles in a triangle add up to 180

A+b+c= 180

The angles in a quadrilateral add up to 360

A+b+c+d = 360

So if

A=80

B=80

C=100

D=100

You could check this by adding them together

80+80+100+100=360

So these must be the right calculations.

A+b+c= 180

The angles in a quadrilateral add up to 360

A+b+c+d = 360

So if

A=80

B=80

C=100

D=100

You could check this by adding them together

80+80+100+100=360

So these must be the right calculations.

### Page 6

Work out the size of the angles marked x and y.

Angles in a triangle add up to 180,

So Y=180-45-90

=45

Angles on a straight line add up to 180,

So Y=180-45

=135

Or you could say the exterior angle

Y=45+90 (Sum of the interior opposite angles)

=135

### Page 7

Work out the angles marked p and q.

Angles in a quadrilateral add up to 360,

So P=360-135-78-83

=64

Angles on a straight line add up to 180,

So Q=180-64

=116

Geometric proof.

E.g.

The sum of the angles of a triangle is 180.

To prove A+b+c=180

Draw a line…

### Page 8

### Page 9

The geometric properties of quadrilaterals.

Square

Rectangle

### Page 10

Parallelogram

Rhombus

Kite

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# Maths :)

Just some revision notes to read through!

3.5 / 5

- Created by: Annieee
- Created on: 28-05-09 12:04

Maths :)Word Document 86.5 Kb

## Pages in this set

### Page 1

1. Number and Algebra.

Multiplying and dividing negative numbers

E.g.

-2*+4

2*4=8, and - * + is equivalent to -. So -2*+4=-8

-6*-3

6*3=18 and -*- is equivalent to +, so -6*-3 =+8

+6*-4/-2

+6*4= -24, -24/-2=+12

Key

-*+=-

-*-=+

-/-=+

-- = +

+-= -

1.

a) -7+8…

Multiplying and dividing negative numbers

E.g.

-2*+4

2*4=8, and - * + is equivalent to -. So -2*+4=-8

-6*-3

6*3=18 and -*- is equivalent to +, so -6*-3 =+8

+6*-4/-2

+6*4= -24, -24/-2=+12

Key

-*+=-

-*-=+

-/-=+

-- = +

+-= -

1.

a) -7+8…

### Page 2

Powers and roots

E.g.

4"3" = 4*4*4 = 64

( Most calculators have a squaring button )

/12.25 = 3.5

(Depending on your calculator, sometimes you type the square

root before the number, and sometimes the number comes first.

Make sure you can use your calculator.)

Prime Factors-

E.g.…

### Page 3

Paving slabs 1 metre square are used to put borders around

square ponds. Some examples are given below.

1*1 metre"2" pond

8 slabs

2*2 metre"2" pond

12 slabs

3*3 metre"2" pond

16 slabs

4*4 metre"2" pond

20 slabs

How many slabs would fit around a 5*5 metre"2" pond?

Answer= 24…

square ponds. Some examples are given below.

1*1 metre"2" pond

8 slabs

2*2 metre"2" pond

12 slabs

3*3 metre"2" pond

16 slabs

4*4 metre"2" pond

20 slabs

How many slabs would fit around a 5*5 metre"2" pond?

Answer= 24…

### Page 4

The angles F and A are corresponding angles.

The angles Z and M are alternate angles.

So

If there was a question that said:

Name a pair of angles that are alternate you would say...

Z and M are alternate angles

OR

Name a pair of angles that are corresponding…

### Page 5

The angles in a triangle add up to 180

A+b+c= 180

The angles in a quadrilateral add up to 360

A+b+c+d = 360

So if

A=80

B=80

C=100

D=100

You could check this by adding them together

80+80+100+100=360

So these must be the right calculations.

A+b+c= 180

The angles in a quadrilateral add up to 360

A+b+c+d = 360

So if

A=80

B=80

C=100

D=100

You could check this by adding them together

80+80+100+100=360

So these must be the right calculations.

### Page 6

Work out the size of the angles marked x and y.

Angles in a triangle add up to 180,

So Y=180-45-90

=45

Angles on a straight line add up to 180,

So Y=180-45

=135

Or you could say the exterior angle

Y=45+90 (Sum of the interior opposite angles)

=135

### Page 7

Work out the angles marked p and q.

Angles in a quadrilateral add up to 360,

So P=360-135-78-83

=64

Angles on a straight line add up to 180,

So Q=180-64

=116

Geometric proof.

E.g.

The sum of the angles of a triangle is 180.

To prove A+b+c=180

Draw a line…

### Page 8

### Page 9

The geometric properties of quadrilaterals.

Square

Rectangle

### Page 10

Parallelogram

Rhombus

Kite

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