All For 100

Starter of The Day Transum Mathematics Topics

Topics: Starter | Arithmetic | Place Value | Problem Solving | Puzzles

Jake, Patana
I have found 1+2+3+4+5+6+7+8x9 = 100
Lewis Crosby, Doncaster
I have found one too 198-73-26+5-4=100
Sarah, Maidenhead
Another solution for this is 56+49-2-3+8-7-1=100
Katrina, Maidenhead
I have got found another solution for this starter =
6x7x2+8-3+1+9-4+5
Holly, Whitby High, Ellesmere Port
Another Solution: (5x6)+(4x9)+(8x3)+7+2+1 = 100
Reece & Ashlee, Ellesmere Port
Two more solutions without brackets from Whitby High:

123-4-5-6-7+8-9 = 100

69+31+8+5-7-4-2 = 100
James Wellington-Smith, Lea Moor High
231-(9x8)-(6x5)-7-4
Mr Heeley's Krew, Rawthorpe in da Hudd of field
We found (1+9+2+8) x 5 + (3+7) - (4+6).

We think that this is the best answer because simplicity is the key!

Cushtie - please, please, please, please, please put us on the site.

God bless you - Maths rocks
Year 6, BIS Jakarta
We found many solutions including
9 * 4 * 2 + 8 + 7 + 3 + 5 + 6 - 1 = 100
9 * 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 100
9 * 8 + 4 * 7 - 5 * 2 + 6 + 3 + 1 = 100
Year 11- Mr Kelly's class, Cross and Passion College
We found another solution for ALL FOR 100

98+7-6+5-4+3-2-1=100
Giovanni Fernandez, The British School of Quito, Ecuador
2 x (7 x 8 x 9 - 456) + 3 + 1
Tim Channer, The British School of Quito, Ecuador
(9 x 8) + (7 x 6) - (5 x 4) + (3 x 2 x 1)
Montae, Mrs. Shelburne's Period 3/6 class, Hayward Middle School, Springfield, Ohio
Here is Montae's solution...he found it in less than 5 minutes and creatively used exponents!

5^2 x 4 - 9 + 6 + 3 - 7 + 8 - 1
Ashleigh Reid, S2 Lochend Community High School
I found this way of getting the answer:

92 + 6 + 3 - 4 + 5 - 1 + 7 - 8
Ciaran Donegan, Harrytown High School, Stockport, 8H
I found (51+4+3) x 2 -9-8 + 7 -6
Mrs Simpson, Torry Academy, Aberdeen
2D1 Maths Class at Torry Acadmey found this way:

89+7+6-5+(2*3)-4+1
Andy Rowe, Knowles Hill School Devon
Cameron Houdmont in Year 7 got this one

(7 + 3) x 9 + 5 + 4 + 1 + 8 - 6 - 2
Ms Winters, Dubai English Speaking College
Here are our answers from class 7DE...

9x8+1+2+3+4+5+6+7

6x3x5+12+4+(9-8)-7

9x8+7+1+5x6-(4x3-2)
Miss Train, Saints Peter and Paul
The first to get it in my class was Emma M in under 20 seconds - here's her solution:
[(1+2+3+4) x 9] + 5 + 6 + 7 - 8 = 100
Jodie, Lauren, Hayley, Harrytown High School Stockport
123+45-67+8-9 Jodie Reilly 9T
98-7-6+5+4+3+2+1 Lauren Hill 9W
(1+2+3+4+5)x6-7+8+9 Hayley Ryder 9H
Jack Houghton, Sydney, Australia
I got 123+45-67+8-9
Martin Vaughn, Central Sussex college haywards heath
8x9 +7 +1 +5 +6 +4 +3 +2 =100
Jonathan, Holland Road
the answer is
12+34+59-6+8-7
Miss Mian, Bishop Ramsey School, Ruislip
Daniela got the total by doing
68 + 23 + 15 -4 +7 - 9

and Amy got it by doing

(9x8) + 1 + 2 + 3 + 4 + 5 + 6 + 7
Josh Atkin, Dunbar Grammar
The answer is
(98-7) +1 -4 +6 -2 +3+5=100

Mark Daniels, Wissahickon Middle School
Nicole from Mr. Daniels' Pre-Alg. Support class,WMS, Ambler,PA did this-
4(5+7+8) + 1(2+3+6+9)

Mr. Daniels offered this-
2^5 + (8x9-4) + 13-(6+7)
Mrs Simpson and class 4M4, Torry Academy, Aberdeen
Vincent found 963-852-7-4x1
Emma found 6x9x2-8+4+1-3+5-7
Shelby found 9x6+34+7+8-5+2x1
Jasmine found 9x7+(6x8)-5-4-3-1+2
Liam Hutchison, Lochend Community High School in Glasgow
I calculated it this way

(9x7) + 6 + 1 + (5 x 2) + (4 x 3) + 8
Ellen Moore, KNGS, Birmingham,UK
This works!
(9+1)-(2+8)+(3+7)+(4+6)*5=100
Miss Samantha Rhodes, Filsham Valley school, Hastings
In 1 class, I had 5 different correct solutions.
8x9+67+1-45+2+3 =100 (Charlotte Avery, year 8)
5x19+34-28-7+6=100 (Sam Davies, year 8)
3x4x6+2x9+(8-7+1)x5=100 (Sophie Fairall, year 8)
8x9+1+2+3+4+5+6+7=100 (Charlotte Rudd, year 8)
156-78+29-3-4=100 (James Bisson, year 8)
Mr Jordan Fry, Laurence Jackson School, Guisbrough
We got 5*9=45, 45+7=52, 52*2=104, 104-6=98, 98+4=102, 102-3=99, 99+1=100
Emma, Lockerbie Academy
78+24+9-6-5+3-2-1=100
Soumya, Croydon
1+8x9+2+7+6+5+3-4=100.
Form 7Y, Harrytown Catholic High School, Stockport
Amy Booth found 9x8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 100
James Wilson (9x8) + 7 + 6 + 5 + (4 x 3) - (2 X 1) = 100.
Miss Marcham And 10f1, Prince Henry's High School, Evesham
We got (6+4)x(8+9-7+5-3-2)x1 = 100.
Mrs J A Thompson, Mexborough School Specialist Science College
Two different answers were found in 10 minutes. 7P SPECTRUM group
The first was 1 + 2 + 3 + 4 + 5 +6 + 7 + (8x9) = 100 by Ashley Finney
and (1+7+2) x 9 + 8 + (4x5)- (3x6) = 100 by Emma Rodgers.
Mitchel, Brocket
Another way of doing it is
9-1=8, 8-2=6,7-3=4, 6-4=2, then
8+6+4+2=20x5=100.
Y Ramsamy, Phoenix College, Reading, UK
My pupils came up with the following solutions:
(124-3-5-6-8-9)+7 = 100 Ryan Walsh
(5x7x2x1)+3+4+6+8+9 = 100 Moin Khan
Y Ramsamy
Phoenix College, Reading, UK
Jerry & Tom, Fukien School (HK)
(1+2x3x4)x5-6*7+8+9=100.
Thomas, Cabrach
This wasn't easy but I found
9x8+7+(6x4)-5+1+3-2=100.
Grade 12 Advanced Functions, Port Hope High School, Ontario, Canada
Connor found 4x5x6-7-8-9-1+2+3
Brandon found 24x5-9-8-7+6+1-3
Brandon found 9x8+1+2+3+4+5+6+7.
Mrs Barnett & 8x1, Bredon Hill Middle School, Evesham
Our simplest answer was (9x8)+7+6+5+4+3+2+1 = 100.
Greg Patko Yr8, Murray Park, Derby
(9+8) x 7 - 6 x 5 + 4 x 3 + 1 - 2
(1 + 9 + 2 + 8 + 3 + 7 - 6 - 4) x 5.
Mike Drewniak, Kewaskum Middle School
Dinara found: 91+82-67-5-4+3.
Beacon Community College, Crowborough, 8XMa3
(6+4)x9+7+3+1+2+5-8=100.
David Clowes, St Peter's Academy
I got 7x5x4-9x3-8-6+2-1.
Max, Hethersett Junior
12x5+39+6-8+7-4=100.
9 (the Better Half) 1, Chellaston Academy, Derbyshire
Anneli and Molly: 9(6+3)+1+8+7+2+(5-4)
May: 2(6x9-3-1+8-5-7+4)
Rhys: 7x9+4x3+5+6x2+8x1
David: 1(932-845)+6+7
Eve: 5x6+87+1-9-4-3-2
Ashley: 9x8+7+6+5+4x3-2x1.
7ax1, Alexandra Park School, London
Susie, Vinesha and Tommy : 8 x 9 + 7 + 1 + 6 + 5 + 4 + 2 + 3 = 100
Semi (1 + 2 + 3 + 4 + 5) x 6 + (8 + 9) - 7 = 100
Kira and Simon 341 - 265 + 9 + 7 + 8 = 100
Ben 91 + 7 + 2 + 5 + 8 - 3 - 4 - 6 = 100
Seb 123 - 45 - 67 + 89 = 100
Lottie 8 x 9 x 2 - (4 x 5) - (6 x 3) - 7 + 1 = 100
Peter (1 + 2 + 3) x 6 - 7 - 5 - 8 + 9 x 4 = 100.
Australia Class, Cottam, Preston, England
Our class found 2 ways to solve this puzzle:
8x9=72+(5x4)=92+(7+1)=100-6=94+2x3=100
The next idea is:2+8= 10X9=90+5=95+6=101+4=105+3=108-1=107-7=100.

RM, UK
I have found: 1 x 7 x 9 + 2 x 6 + 4 x 5 + 8 + 3 = 100.
Abi T, St Peter's Y6 Maths Group
(9x8)x1 +6 +7 + (5x4)- (3+2).
Miss Brook, Crick Primary School
William - Year 6 - 9x8=72 + 5x6 - 7 - 2 - + 3 + 4 x 1
Ethan - Year 6 - 7x9 x 2 - 8 - 6 - 5 - 3 - 4 x 1.
Taeh, Croydon
I found out that you can do 8x9 which equals 72 and then you add 7+6+5+4+3+2+1=28 then 28 and 72 equals 100.
Sophie Tune, Kingswinford England
I got 1+2+3+4+5x7(105)-6+9-8.
Matthew Zhao, 4AD, Craigslea State School
Matthew Zhao here, coming with with a personal answer in two minutes!
47*2+1+3+6+9-8-5=100.
(P.S. I'm in Grade Four).
Mr Macready, Jersey
Sarah here in Jersey Year 8.1 came up with (93+7)+(8x6)-45-2-1
Some of the others came up with answers like 99.2, which aren't 100 last time I checked!
Gurdev Rayet, Holyheadschool
I found 9x8+7+6+5+4+3+2+1 which makes 100.
Mr. Van, Sweden
We did it!
Shaa, India
It's really cool, do you want to see more?

_ _ +_ _+_ _ = _ _+ _=100

Fill in the blanks with the numbers from 1 to 9 without repeating.
, Myrtleford
I have managed to find a way of getting so many firstly you two numbers to be a ninety type number aka 9 and 6 then you add to make 100 so in this case 4 then you the rest of the numbers to add and subtract what you have added on so now it's 96+4+8-7-1+5-3-2 making countless ways of doing it!!

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Christmas Present Ideas

It is often very difficult choosing Christmas presents for family and friends but so here are some seasonal, mathematics-related gifts chosen and recommended by Transum Mathematics.

Equate board game

Here's a great board game that will give any family with school-aged kids hours of worthwhile fun. Christmas is a time for board games but this one will still be useful at any time of year. Games can be adapted to suit many levels of Mathematical ability.

For Maths tutors working with just one or small groups of pupils this game has proved to be an excellent activity for a tutorial. Deciding on the best moves can spark pertinent discussions about mathematical concepts.

Equate looks a bit like Scrabble--for aspiring mathematicians, that is. Designed by a real mathematician, it works like this: You put down tiles on a board and make points by correctly completing simple equations. Your nine tiles include both numbers and mathematical symbols; you can add on to previous plays both vertically and horizontally. more... #ad

How Not To Be Wrong

The maths we learn in school can seem like an abstract set of rules, laid down by the ancients and not to be questioned. In fact, Jordan Ellenberg shows us, maths touches on everything we do, and a little mathematical knowledge reveals the hidden structures that lie beneath the world's messy and chaotic surface. In How Not to be Wrong, Ellenberg explores the mathematician's method of analyzing life, from the everyday to the cosmic, showing us which numbers to defend, which ones to ignore, and when to change the equation entirely. Along the way, he explains calculus in a single page, describes Gödel's theorem using only one-syllable words, and reveals how early you actually need to get to the airport.

What more could the inquisitive adult want for Christmas? This book makes a cosy, interesting read in front of the fire on those cold winter evenings. more... #ad

Graphic Display Calculator

This handheld device and companion software are designed to generate opportunities for classroom exploration and to promote greater understanding of core concepts in the mathematics and science classroom. TI-Nspire technology has been developed through sound classroom research which shows that "linked multiple representation are crucial in development of conceptual understanding and it is feasible only through use of a technology such as TI-Nspire, which provides simultaneous, dynamically linked representations of graphs, equations, data, and verbal explanations, such that a change in one representation is immediately reflected in the others.

For the young people in your life it is a great investment. Bought as a Christmas present but useful for many years to come as the young person turns into an A-level candidate then works their way through university. more... #ad

Apple iPad Pro

The analytics show that more and more people are accessing Transum Mathematics via an iPad as it is so portable and responsive. The iPad has so many other uses in addition to solving Transum's puzzles and challenges and it would make an excellent gift for anyone.

The redesigned Retina display is as stunning to look at as it is to touch. It all comes with iOS, the world's most advanced mobile operating system. iPad Pro. Everything you want modern computing to be. more... #ad

Before giving an iPad as a Christmas gift you could add a link to iPad Maths to the home screen.

Craig Barton's Tips for Teachers

Teaching is complex. But there are simple ideas we can enact to help our teaching be more effective. This book contains over 400 such ideas." more... #ad

"The ideas come from two sources. First, from the wonderful guests on his Tips for Teachers podcast - education heavyweights such as Dylan Wiliam, Daisy Christodoulou and Tom Sherrington, as well as talented teachers who are not household names but have so much wisdom to share. Then there's what he has learned from working with amazing teachers and students in hundreds of schools around the world.

The Story Of Maths [DVD]

The films in this ambitious series offer clear, accessible explanations of important mathematical ideas but are also packed with engaging anecdotes, fascinating biographical details, and pivotal episodes in the lives of the great mathematicians. Engaging, enlightening and entertaining, the series gives viewers new and often surprising insights into the central importance of mathematics, establishing this discipline to be one of humanity s greatest cultural achievements. This DVD contains all four programmes from the BBC series.

Marcus du Sautoy's wonderful programmes make a perfect Christmas gift more... #ad

Christmas Maths

This book provides a wealth of fun activities with a Christmas theme. Each photocopiable worksheet is matched to the Numeracy Strategy and compatible with the Scottish 5-14 Guidelines. This series is designed for busy teachers in the late Autumn term who are desperate for materials that are relevant and interesting and that can be completed with minimun supervision.

All the activities are suitable for use by class teachers, supply teachers, SEN teachers and classroom assistants and cover topics such as 'How many partridges did the true love give all together?' and 'Filling a sleigh with presents by rolling a dice!'. Children will have lots of fun working through the Christmas Maths themes but also gain valuable skills along the way.

A great source of ideas and another reasonably priced stocking filler. more... #ad

A Compendium Of Mathematical Methods

How many different methods do you know to solve simultaneous equations? To multiply decimals? To find the nth term of a sequence?

A Compendium of Mathematical Methods brings together over one hundred different approaches from classrooms all over the world, giving curious mathematicians the opportunity to explore fascinating methods that they've never before encountered.

If you teach mathematics to any age group in any country, you are guaranteed to learn lots of new things from this delightful book. It will deepen your subject knowledge and enhance your teaching, whatever your existing level of expertise. It will inspire you to explore new approaches with your pupils and provide valuable guidance on explanations and misconceptions. more... #ad

Math with Bad Drawings

I had been tutoring the wonderful Betsy for five years. When the day came for our last ever session together before the end of her Year 13, I received this beautiful book as a gift of appreciation.

This a very readable book by Ben Orlin. I'm really enjoying the humour in the writing and the drawings are great.

Ben Orlin answers maths' three big questions: Why do I need to learn this? When am I ever going to use it? Why is it so hard? The answers come in various forms-cartoons, drawings, jokes, and the stories and insights of an empathetic teacher who believes that mathematics should belong to everyone. more... #ad

Click the images above to see all the details of these gift ideas and to buy them online.

Maths T-Shirts

Maths T-Shirts on Amazon

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Educational Technology on Amazon


	Teacher, do your students have access to computers? Do they have iPads or Laptops in Lessons? Whether your students each have a TabletPC, a Surface or a Mac, this activity lends itself to eLearning (Engaged Learning).