To complete balancing calculations. 7 x 10 = 82 – p 5 x 4 = 40 – n 6 x 7 = 80 - t 5 x 5 = 20 + p...

To complete To complete balancing balancing

calculations. calculations.

7 x 10 = 82 – p7 x 10 = 82 – p5 x 4 = 40 – n5 x 4 = 40 – n6 x 7 = 80 - t6 x 7 = 80 - t5 x 5 = 20 + p5 x 5 = 20 + p6 x 6 = 12 x n6 x 6 = 12 x n 5 + 24 = 65 – n 5 + 24 = 65 – n

Joanne Smithies Our Lady & St. Gerards RCP

Learning Objective

The distance The distance around the around the outside of a outside of a

shape is called shape is called the perimeter.the perimeter.

8 cm8 cm

6 cm6 cm

8 cm8 cm

6 cm6 cm

The perimeter of the shape is 8 + 6 + 8 The perimeter of the shape is 8 + 6 + 8 + 6 = 28cm.+ 6 = 28cm.

First we need to find the length of each side by First we need to find the length of each side by counting the squarescounting the squares..

What is the What is the perimeter perimeter of each of of each of

these these shapes? shapes?

18cm18cm18cm18cm

18cm18cm22cm22cm

26cm26cm

Now find the Now find the perimeter of perimeter of

these shapes. these shapes. They are not They are not

drawn to drawn to scale.scale.

3cm3cm

5cm5cm

7cm7cm7cm7cm

3cm3cm

4cm4cm 4cm4cm

3cm3cm 3cm3cm

3cm3cm3cm3cm

Perimeter = 18cmPerimeter = 18cm Perimeter = 22cmPerimeter = 22cm Perimeter = 28cmPerimeter = 28cm

77ccmm

5cm5cm

33ccmm

3cm3cm 3cm3cm

3cm3cm

To order Fractions

Learning Objective

Use a protractor to draw and measure acute and obtuse

angles to the nearest degree.

0011 0010 1010 1101 0001 0100 1011

What are the properties of a protractor??

A protractor

Here is a standard protractor like you use in the classroom.

0011 0010 1010 1101 0001 0100 1011

When we use a protractor, we need to line it up

correctly.

You need to make sure the protractor is lined up correctly.

Is this ready to measure the angle?

0011 0010 1010 1101 0001 0100 1011

Were you right......................it wasn’t

Look for the upside down ‘T’ in the middle of the straight line on your protractor.

This needs to be exactly on the vertex of your angle.

0011 0010 1010 1101 0001 0100 1011

We need to remember.....

It doesn’t matter which way round the angle is, you ALWAYS need to line the upsidedown ‘T’ to the vertexof the angle.

0011 0010 1010 1101 0001 0100 1011

Now you are ready.

Read from the 0°, and follow the inner set of numbers.

0011 0010 1010 1101 0001 0100 1011

Once you reach 30° you need to be careful!!!

You then need to look at the 1° markings on the outer set of numbers.

0011 0010 1010 1101 0001 0100 1011

What does it measure?

This angle measures 35°.

0011 0010 1010 1101 0001 0100 1011

This angle measures......

0011 0010 1010 1101 0001 0100 1011

This angle measures......

0011 0010 1010 1101 0001 0100 1011

Mr Obtuse Angle

This is Obtuse. He’s the husband of the family. He’s bigger than Right and Acute . He’s always inside, and he always measures between 90° and 180° (depending on how much dinner he’s eaten!)

0011 0010 1010 1101 0001 0100 1011

Mrs. Right Angle

This is me. I’m Mrs. Right Angle. I always measure 90°, my favourite shape is a square, and whats more, no matter what my husband tells you, I’m always right!

0011 0010 1010 1101 0001 0100 1011

Baby Acute AngleThis is baby Acute angle. Isn’t he cute?! He loves a hug, and always has his arms out for cuddles! He’s the smallest of the family, measuring less than 90°.

0011 0010 1010 1101 0001 0100 1011

Reflex AngleThis is our pet dog, Reflex. He’s always outside. He’s only a pup at the moment so he measures 180°, but he can grow up to 360 °! So he’s definitely the biggest angle. You’ll never see him without that ball in his mouth either, horrid thing!

0011 0010 1010 1101 0001 0100 1011

So, now you’ve met us, let’s see how well you

know us...Who am I?

I’m the smallest angle

I always measure less than 90°

I’m very cute!

0011 0010 1010 1101 0001 0100 1011

I’m....

0011 0010 1010 1101 0001 0100 1011

Who am I?

I’m the biggest angle

I’m always outside

I can measure between 180° and 360°

0011 0010 1010 1101 0001 0100 1011

I’m...

Reflex Angle

0011 0010 1010 1101 0001 0100 1011

Who am I?

I’m always inside

I always measure between 90° and 180 °

I’m bigger than Right and Acute

0011 0010 1010 1101 0001 0100 1011

I’m...

0011 0010 1010 1101 0001 0100 1011

Who’s left?

YOUR TASK!

1. Draw an angle2. Estimate it’s size in

degrees3. Measure4. Write what type of

angle it is

To order Fractions, Decimals and Percentages.

Learning Objective

Measure and calculate angles at a

point.

HOW MANY RIGHT ANGLES IN A CIRCLE?

HOW MANY DEGREES IN A CIRCLE?

HOW MANY DEGREES IN A STRAIGHT LINE?

WHAT ARE THESE ANGLES?

A120 °

CALCULATE THE MISSING REFLEX

CALCULATE THE MISSING STRAIGHT

LINE ANGLE

69° 111°

CALCULATE THE MISSING REFLEX

CALCULATE THE MISSING STRAIGHT

LINE ANGLE

103°35°

Learning Objective

Calculate angles in a triangle.

PROPERTY OF TRIANGLES

The sum of all the angles equals 180º degrees. 60º

60º60º+

180º60º 60º60º

WHAT IS THE MISSING ANGLE?

70º70º

?+180º70º 70º

90º30º

?+180º30º 90º

60º60º

?+180º60º 60º

30º78º

?+180º

78º 30º

40º40º

?+180º

40º 40º

Equilateral Triangle

All 3 Sides are equal in Length

All 3 interior angles are the same

Isosceles Triangle

Two Sides of equal Length

Two interior angles are the same

Scalene Triangle

No Sides of equal Length

All interior angles are different

Right-Angled Triangles

They have an Interior angle of 90 degrees

Right-Angled Triangles can be either Isosceles or scalene triangles

Scalene Right Angled Triangle Isosceles Right Angled Triangle

Learning Objective

Calculate angles in a triangle.

reflex right

acute obtuse

reflex right

acute obtuse

reflex right

acute obtuse

reflex right

acute obtuse

reflex right

acute obtuse

reflex right

acute obtuse

reflex right

acute obtuse

L.O angles quiz

reflex right

acute obtuse

reflex right

acute obtuse

reflex right

acute obtuse

L.O angles quiz

reflex right

acute obtuse

reflex right

acute obtuse

reflex right

acute obtuse

reflex right

acute obtuse

reflex right

acute obtuse

60º 60º

25º 95º

65º 65º?

74º 40º

40º 40º

Learning Objective

Out of the 100 small squares Out of the 100 small squares how many are coloured?how many are coloured?

So 50 in every So 50 in every 100 are 100 are

coloured.coloured.

We can call We can call thisthis

50%50%

What is this as a fraction?

coloured.coloured.

10%10%

coloured.coloured.

30%30%

Out of the 100 small squares how many are coloured?

So 83 in every 100 are

coloured.

We can call this

1)1) 2)2)

4)4)3)3)

Now try these on you own

PERCENTAGES OF NUMBERS

Sometimes we may want to Sometimes we may want to find out a percentage of a find out a percentage of a number. For example if a it number. For example if a it was 10% off all clothes in a was 10% off all clothes in a store you would want to store you would want to know how much money was know how much money was being taken off!being taken off!

If we want to find 10% of a If we want to find 10% of a number we simply divide the number we simply divide the number by 10….number by 10….

10% of 45 = 4.510% of 45 = 4.5

Can you find 10% of the Can you find 10% of the following numbers on your following numbers on your mini whiteboards – mini whiteboards –

3434 9595 321321 5353 78437843

Can you find 10% of the Can you find 10% of the following prices on your mini following prices on your mini whiteboards – don’t forget whiteboards – don’t forget to write in units!to write in units!

£10.00£10.00 £3.50£3.50 £15£15£45£45

Now that we know how to Now that we know how to find 10% of a number how find 10% of a number how can we find…can we find…20%20%40%40%25%25%

Sometimes we might want to Sometimes we might want to find a percentage of a find a percentage of a number where we need to number where we need to know what 1% of the know what 1% of the number is. For example 3% number is. For example 3% of 20. To do this we would of 20. To do this we would divide 20 by 100 to get 1% divide 20 by 100 to get 1% and times this by 3 to find and times this by 3 to find 3%3%

To complete balancing calculations. 7 x 10 = 82 – p 5 x 4 = 40 – n 6 x 7 = 80 - t 5 x 5 = 20 + p...

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