These two group activities use mathematical reasoning - one is
numerical, one geometric.
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.
We had lots and lots of replies to this problem - it seems to
have caused a great deal of interest!
There were three ways to make $99$ by putting addition signs in
between the digits. John from Finningley Church of England School
Well, what I did was get a piece of paper and wrote down all of
the possible sums. Then I added up all the sums and finally found
the solutions below:
Hanna and Brian from Windsor Hill Primary School in Northern
Ireland sent us this explanation of how they did the problem:
We used an approach of trial and error to help us find different
solutions. We began by choosing bigger numbers to find an
approximate answer and then checked the rest of the calculation to
see how close we were to $99$. We continued this process adjusting
our guess until we hit the target.
Many of you found all three solutions including:
Adam, Ryan, Benjamin, Rebecca, Luke, Alex, Ryo and Jake from
Moorfield Junior School
Ali, Nat, Craig, Lucy, Megan, Rachel, Ryan and Toni from South
Parade Junior School
Jessica, Morgan and James from Aldermaston Primary School
Khoo Kian Koon, Ong Kai Loon and Teo Mei Ting from Corporation
Primary School, Singapore
Isobel, David, James, Liam, Alfie and Joe from Longwick C of E
Ã?dil from ErenkÃ?¶y
School in Istanbul
Charlotte and Joanna from Tattingstone School
MinJung from Hanoi International School
Prachi from Canadian Academy
Very well done. Do remember, we want to know HOW you go about
solving our problems, not just your answers!