# Subtraction Surprise!

In the video below, Alison chooses some three-digit numbers and carries out some calculations which lead to a surprising result!

Watch the video. What do you notice?
Can you figure out the steps that Alison carries out in each calculation?

Record all your calculations in your book. Write down everything you notice as you work.

Choose some three-digit numbers of your own.
(Make sure the first and third digits are different)
Is there a pattern to all the answers?

Now watch the videos again. This time, all three subtractions are carried out at the same time.
You may wish to pause the video at certain points, or watch it several times.

What is the same in each example?
What is different?

Does every example lead to the same answer?
Can you use what you noticed in the video to prove it?

## 39 thoughts on “Year 5 & 6 Maths 14.07.2020”

1. Annabel says:

I donβt get it? Why did Addison put 2 things under the equation

2. Annabel says:

I doesnβt make any sense. The answer is 396 not 693. Why is she adding them?

3. Erin the Cat π says:

Woahhhhhh, this maths is so cool!

4. Annabel says:

π well, it is but itβs so confusing!!! Iβve got the answer if 1010…

5. Annabel says:

For my second one I got the answer of 1190

6. Annabel says:

Do we have to do equations that lead to the same answers?

1. Miss Lynch says:

Good Morning Annabel,
Have you discussed your thoughts and questions with Miss Ashby?
Miss Lynch π

1. Annabel says:

No
. Iβve got through it though. Iβve got a method πππ

7. Annabel says:

What is your favourite emoji/s? Mine is this: πππ

1. Erin the Cat π says:

Mine is thisπ

8. Aamori says:

Mine is this π€©.

9. Annabel says:

Oh wow Erin…

1. Erin the Cat π says:

I am a cat.

1. Erin the Cat π says:

Ya.

2. Erin the Cat π says:

I love cats. I wish everyone was a cat so that we could meow at each other. Meowing is so fun.

1. Aamori the emoji π says:

But if we were all cats how could we use a device?

1. And Erin on discord u don’t add each other by email u have to write the persons username and four digit code which starts with a hashtag

1. Erin the Cat π says:

Oh ok. There is a zoom call with our new class teachers on thursday so maybe you could tell me it then.

2. so like for an example it could be like: Name#0000

1. Erin the Cat π says:

Oh cool. Does it just generate a random one.

10. Erin the Cat π says:

Also Samir, why is your name blue?
You can press on it and everything!

1. Idk I pressed my name and it literally just took me to the main page of the school website. Btw on discord It randomly generates the code but u can pick what name u have and change ur profile pic like ima be honest about this my profile pic is Mr Tumble lol!

1. Erin the Cat π says:

Ya same with me.
I used to watch him and one time when I was bored I watched it and it is so baddddd. And his outfit is weird it is like a clown. I donβt get what I saw in that program.

1. Erin the Cat π says:

And I bet mr tumble isnβt his actual name. Ik his first name (Justin) but like mr tumble?!?!
That means it is Justin tumble…..

11. Annabel says:

π ππ€£π€£π€£π€£π€£ππ€£ππππππππ€£ππππ€£πππππ―ππ€£π€£ππππππππ€£π€£π€£πππ€£π€£πππ€£πππ€£π€£πππ€£πππππ€£π€£πππ€£π€£πππ€£π€£ππ€£π€£πππππ―ππππππππππ€£π€£πππππ€£π€£π€£π€£π€£π€£π€£π€£π€£ππ€£

12. Annabel says:

Wait, Samir, I downloaded discoed at home and do I just make an account? How do I add u?

1. Annabel u have to make an account and then send Erin ur name and the four digit code next to ur name on zoom so when I add her she can also add u and we can make a group chat and then I can add u from that group chat.

1. Erin the Cat π says:

Complicated….
I like texting peeps….
And you probs know this but I also like cats πππππ

1. Well itβs not really complicated because Erin, Annabel can tell u her name and code on zoom so then if I add u, u can add Annabel and we will make a group chat. If u donβt how to add ppl to a group chat then I will tell u how to

1. Erin the Cat π says:

Donβt worry I know how to. Can you like play games together on discord coz it said that.

13. Miss Lynch it isn’t letting me watch the first video. π

14. Never mind it works now π .

1. Miss Lynch says:

Great! Well done for sorting it out yourself π

15. Annabel says:

How do I find out ur name?? Ik I can text Erin but how do I get urs

1. Erin the Cat π says:

I will get samirs on the zoom call then I will tell u it.

1. Erin the Cat π says:

Then we can make a group.

1. No Erin u cant play games but if u are playing a certain game it will show up that the person is playing so like if ur playing roblox it will say ur playing roblox if ur playing fortnite it will say ur playing fortnite. Idk about other games because those r the only 2 games I’ve seen show up under some ones name.

1. Erin the Cat π says:

Ok. I play roblox quite a lot so ya.