# 6W 5/5/20- Maths (Calculating angles)

Today we will be applying our knowledge of angles to help calculate missing angles. Similar to algebra and inverse calculations in a way.
First watch the video and then complete the following;

BRONZE (Mrs Ahmed’s maths group)

SILVER (Miss Vega’s Maths group)

GOLD (Mrs Hurt’s maths group)

There are far too many children saying ‘I done it’ – this comment means nothing unless a photo of your work has been sent to the year 6 email. (Thank you to the few who are currently doing this)
Every child in Year Six has access to a phone or tablets and every parent has an email address. Therefore we will only accept your work via email
or in full sentences in the comment boxes below.
Remember we’re aiming to prepare you for Secondary School!

## 19 thoughts on “6W 5/5/20- Maths (Calculating angles)”

1. Sunjivreddy M.

Gold:

I dont agree with Tommy because 180 degrees wouldn’t be 2 seperate straight lines, it would be 1 straight line, or have a circle. I know this because in the diagram you can see 2 seperate lines which are not connected into 1 straight line, and therefore Tommy is wrong

A = 120 degrees
B = 240 degrees
360 – 240 = 120
120 divided by 2 = 60

A = 72 degrees
B = 18 degrees
I found this out because i knew that the right angle was 90degrees, and 180-90= 90. Then i did 90 divided by 5 because A is 4 times bigger than b, but B is still an angle, and so 4B+B= 5B. 90 divided by 5 was 18 and 18 x 4 is 72.

Sweets = 45degrees
Chocolate = 90degrees
Fruit = 225 degrees

Blue= 180 degrees
Red= 120 degrees
Green= 60 degrees.

I found red out because Blue was a straight line, and a straight line is 180 degrees, and 360-180=180 degrees. Then i divided that by three because i had to find 3 greens. 2Green=1Red, 2Green (1Red) + 1 Green= 3Red And whe i divided 180 by 3 i got 60. I simply multiplied 60 by 2 which gave me red, and what was left was green.

• Miss Vega

I understand where you are coming from Sunny, however I think it is supposed to be connected.
Great explanation!

2. Raumaan A.

Gold:
1. I agree with Timmy because to find a missing angle you use the found angle subtracted by the angle line which is 180-64=116. so I agree with Timmy.
2. a=120. It equals 120 because the angle is a full whole so you need to do 360 divided by 3 which equals 120. So because a is half of b so b=240.
3.
chocolate=90
sweets=45
fruit=225
Chocolate equals 90 because it is a full corner and makes a right angle so 90.
Fruit equals 225 because it has 2 full corners and a half so 90+90+45=225.
Sweets equals 45 because there is only a half of a corner left so 90 divided by 2=45.

• Miss Vega

Great reasoning skills Raumaan. Well done!

3. Zakaria R.

Gold:

1) I do not agree with Tommy because he mentioned that angle is 116*,
however when looking at this angle, the angle is clearly an acute angle, which ranges from 0* to 89*. Tommy mentions this angle is 116*, which is the range of an obtuse angle. Therefore Tommy is incorrect.

2) The total of the angle is 360*. Therefore angle b = 240 and angle a = 120

3) The total votes in the pie chart add up to 360*.

Chocolate = 90* because it is a right angle.
Sweets = 45* because it is half of the right angle.
Fruit = 225* because it takes up one half + half of a right angle = 45* = 180 + 45 = 225. 225 + 90 + 45 = 360

• Miss Vega

Great Job Zak!

4. Anya D.

I have done it and sent it by email!

5. Inaaya H.

Gold(Mrs Hurts Maths group)
1.I agree with Tommy because 180-64=116 and angles on a straight line must equal up to 180 degrees because then it is the full angle.
If It doesn’t add up to 180 degrees then it is not a full angle.
2.A) a=145 degrees B) a=80 degrees
b=290 degrees b=20 degrees
3. Chocolate=90 degrees
Sweets=60 degrees
Fruit=300 degrees

• Miss Vega

How have you worked this out? These are incorrect, I can’t help you if you don’t show me your method x

• Miss Vega

6. Jamie G.

Gold:
1.I dont agree because there are 2 other angles so it cant be 116 degrees.
2a.
a = 120 degrees
b= 240 degrees
2b.
a= 72 degrees
b= 18 degrees
3.
Chocolate = 90 degrees
Sweets = 45 degrees
Fruit = 225 degrees.
4.
Blue = 180 degrees.
Red = 120 degrees
Green = 60 degrees

• Mrs Janjua

Why can’t it be 116? Can you explain

7. Laraib T.

I have done silver.

• Miss Vega

Have you sent us your work?

8. Xamsa H.

i have done it miss!

• Miss Vega

Where Haj?

9. Nargis B.

Silver
A)E= 180
B)g= 89
C)x= 131
D)a= 48
E)y= 198
F)z= 90

Dora has turned through 360 degrees.

I’ll send the number 5 on silver later and the other question.

• Nargis B.

Low battery

• Miss Vega

Nargis, please show me your working out, these answers are wrong and I am not sure how you got them?