To complete balancing calculations.

7 x 10 = 82 – p 5 x 4 = 40 – n 6 x 7 = 80 - t 5 x 5 = 20 + p 6 x 6 = 12 x n = 65 – n = 65 – n

Joanne Smithies Our Lady & St. Gerards RCP Learning Objective

The distance around the outside of a shape is called the perimeter. 8 cm 6 cm 8 cm 6 cm The perimeter of the shape is = 28cm. First we need to find the length of each side by counting the squares.

What is the perimeter of each of these shapes? 18cm 18cm 18cm 22cm 26cm

Now find the perimeter of these shapes. They are not drawn to scale. 3cm3cm 3cm 3cm 3cm 3cm 5cm7cm7cm 3cm 4cm4cm 4cm4cm 3cm 3cm 3cm 3cm Perimeter = 18cm Perimeter = 22cm Perimeter = 28cm

7cm7cm7cm7cm 5cm 5cm 3cm3cm3cm3cm 3cm3cm3cm3cm 3cm3cm3cm3cm 3cm3cm 3cm

YOUR TASK! Abacus 2 Page 42 Page 44

OMA To order Fractions

Learning Objective Use a protractor to draw and measure acute and obtuse angles to the nearest degree.

What are the properties of a protractor?? A protractor Here is a standard protractor like you use in the classroom.

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?

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.

We need to remember..... It doesn’t matter which way round the angle is, you ALWAYS need to line the upside down ‘T’ to the vertex of the angle.

Now you are ready. Read from the 0°, and follow the inner set of numbers.

Once you reach 30° you need to be careful!!! You then need to look at the 1° markings on the outer set of numbers.

What does it measure? This angle measures 35°.

What does it measure? This angle measures......

What does it measure? This angle measures......

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!)

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!

Baby Acute Angle This 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°.

Reflex Angle This 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!

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!

I’m....

Who am I? I’m the biggest angle I’m always outside I can measure between 180° and 360°

I’m... Reflex Angle

Who am I? I’m always inside I always measure between 90° and 180 ° I’m bigger than Right and Acute

I’m...

Who’s left?

YOUR TASK! 1. 1.Draw an angle 2. 2.Estimate it’s size in degrees 3. 3.Measure 4. 4.Write what type of angle it is

OMA To order Fractions, Decimals and Percentages.

Learning Objective Measure and calculate angles at a point.

HOW MANY RIGHT ANGLES IN A CIRCLE? 90° HOW MANY DEGREES IN A CIRCLE? HOW MANY DEGREES IN A STRAIGHT LINE?

WHAT ARE THESE ANGLES? A 120 °

CALCULATE THE MISSING REFLEX ANGLE 47 ° 313°

CALCULATE THE MISSING STRAIGHT LINE ANGLE 69 ° 111 °

CALCULATE THE MISSING REFLEX ANGLE 126 ° 234 °

CALCULATE THE MISSING STRAIGHT LINE ANGLE 42° 103 ° 35°

YOUR TASK! Mrs Byrne’s and Miss Newton’s Group: Abacus 49 Miss Todd’s Group: Abacus Page 51

OMA To order Fractions, decimals and Percentages.

Learning Objective Calculate angles in a triangle.

PROPERTY OF TRIANGLES The sum of all the angles equals 180º degrees. 60º + 180º 60º

WHAT IS THE MISSING ANGLE? 70º ? + 180º 70º ?

WHAT IS THE MISSING ANGLE? 90º 30º ? + 180º 30º90º ?

WHAT IS THE MISSING ANGLE? 60º ? + 180º 60º ?

WHAT IS THE MISSING ANGLE? 30º 78º ? + 180º 78º30º ?

WHAT IS THE MISSING ANGLE? 40º ? + 180º 40º ?

YOUR TASK! Mrs Byrne’s and Miss Newton’s Group: Abacus 54 Miss Todd’s Group: Abacus 54 Miss Todd’s Group: Abacus Page 55

OMA To recognise types of triangles

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 TriangleIsosceles Right Angled Triangle

Learning Objective Calculate angles in a triangle.

? reflexright acute obtuse

? reflexright acute obtuse

? reflexright acute obtuse

? reflexright acute obtuse

? reflexright acute obtuse

? reflexright acute obtuse

? reflexright acute obtuse

L.O angles quiz ? reflexright acute obtuse

? reflexright acute obtuse

? reflexright acute obtuse

L.O angles quiz ? reflexright acute obtuse

? reflexright acute obtuse

? reflexright acute obtuse

? reflexright acute obtuse

? reflexright acute obtuse

WHAT IS THE MISSING ANGLE? 60º ?

WHAT IS THE MISSING ANGLE? 25º95º ?

WHAT IS THE MISSING ANGLE? 65º ?

WHAT IS THE MISSING ANGLE? 74º40º ?

WHAT IS THE MISSING ANGLE? 40º ?

YOUR TASK! Mrs Byrne’s Group: Abacus 53 Miss Kavanagh’s Group: Abacus Page 55

YOUR TASK! Draw a triangle and extend one line like above. Mark your angles a, b, c and x. Measure all the angles. Repeat with a different triangle Can you write a rule? a b c x

OMA Order fractions, decimals and percentages

Learning Objective

Out of the 100 small squares how many are coloured? 50 So 50 in every 100 are coloured. We can call this 50% What is this as a fraction?

Out of the 100 small squares how many are coloured? 10 So 10 in every 100 are coloured. We can call this 10% What is this as a fraction?

Out of the 100 small squares how many are coloured? 5 So 5 in every 100 are coloured. We can call this 5% What is this as a fraction?

Out of the 100 small squares how many are coloured? 30 So 30 in every 100 are coloured. We can call this 30% What is this as a fraction?

Out of the 100 small squares how many are coloured? 83 So 83 in every 100 are coloured. We can call this 83% What is this as a fraction?

1)2) 4)3) Now try these on you own

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

PERCENTAGES OF NUMBERS If we want to find 10% of a number we simply divide the number by 10…. 10% of 45 = 4.5

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

PERCENTAGES OF NUMBERS Can you find 10% of the following prices on your mini whiteboards – don’t forget to write in units! £10.00£3.50£15£45

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

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

YOUR TASK! Mrs Byrne’s and Miss Newtons Group: Abacus Page 8 and 9 Miss Todd: NHM Page 64 Miss Todd NHM Page 47