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# Y2 Maths Challenge: The Abacus

Hello!

This week I’ve asked you to complete more times tables activities on MyMaths. You need to know your 5s, which can be a little trickier than the 10s or the 2s. If you’re finding it tricky, have a go at this worksheet first and ask for help from a parent, sibling or carer. You don’t have to do this sheet, only do it if you’re finding the MyMaths task hard!

finding the 5s

Remember the five times table is also really handy for telling the time! We can use it to help us figure out the minute scale.

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Follow the rules on the sheet carefully. There are two pages of questions (so click the down arrow at the bottom of the sheet to find page two). Page three tells you the answers, no peeking until you’ve finished investigating! What patterns will you find?

abacus investigation

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Figure out the missing numbers in these patterns.

### Mega hard for Year Two: 1, 2, 4, 8, 16, __, __

You can make up your own patterns for your friends to solve as well!

Hi Mr Morgan,
1.20,15.
2.74,84.
MEGA hard: 32,64

• Mr Morgan says:

Thank you Melina. I hope you will email me your abacus challenge!

• Hi.
1. 20, 15
2. 19, 21
3. 74, 84, 94, 104, 114
4. 32, 64, 128
Thank you

• Mr Morgan says:

I’m impressed that you jumped ahead further to 128!

You might not have a strategy yet to easily work out 128 + 128, but next week there will be a video lesson and I think you’ll be able to do it then more easily.

• Safiyyah says:

128+128=256.

I’m sure Yi-Xuan knows this.

• Saule says:

Hello Mr. Morgan,
35,30,25,20,15,10,5
13,15,17,19,21,23,25
44,54,64,74,84,94,104

Hi,
This is my own abacus challenge:
108, 120,___,___.
?Good luck!

• Mr Morgan says:

Very challenging! It looks like you are doing the twelve times table…

• Safiyyah says:

108,120,132.

• Vihansa says:

Hi Mr Morgan,
1 20, 15
2. 19,21
3. 74,84,104
4. 32, 64 this was hard. My mum helped me.

• Mr Morgan says:

It is a good idea to ask your Mum for help. When I can’t be with you in the same room, your Mum can be the teacher! If she isn’t too busy with her own work!

• My challange.
0, 20,__, __, __, 100
97,__,__,77, __,__,__,37,__,__7.
3,8,13,__,__,__,33.
Thanks

• Mr Morgan says:

I think between 97 and 77 there should only be one missing number.

Hello Aaron,
1-20-40-60-80-100.
2-97-87-77-67-57-47-37-27-17-7.
3-3-8-13-18-23-28-33.

• Vihansa says:

Can anyone solve these ?
1. 3,9,27 ,………., ……….
2 5, ………., …………., 20, ……….., 30
3. 123,………, 115, 111, ………., 107

• Mr Morgan says:

Number 1 is remarkably hard. I’m not even sure Yi-Xuan will figure that one out!

I think your third one might have a mistake in it. What do you think?

• Safiyyah says:

1) 3,9,27,33,39
2) 5,10,15,20,25,30
3) 123,121,119,117,115,111,109,107.

• Mr Morgan says:

Hello everyone,

If you haven’t received a phone call yet, I will be calling you tomorrow. If you would like me to call at an exact time, please email me to tell me when!

• Safiyyah says:

1) 35,30,25,20,15,10,5
2) 74,84,94
3) 44,54,64,74,84,94,104
4) 32,64.

The last one wasn’t hard because I didn’t need to count it.

Hello Mr Morgan.
1-35-30-25-20-15-10-5.
2-13-151719-21-23-25-27.
3-44-54-64-74-84-94-104-114.
Mega Hard
32-64-128.