Topics: Starter  Arithmetic  Investigations  Number
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Previous Day  This starter is for 17 February  Next Day
You probably found
4, 9 and 18
...though there are lots more!
4 multiplied by 4
[the number of letters in four] equals 16 which is the square of 4
9 multiplied by 4 [the number of letters in nine] equals 36 which is the square
of 6
18 multiplied by 8 [the number of letters in eighteen] equals 144 which is the
square of 12
36 multiplied by 9
[the number of letters in thirty six] equals 324 which is the square of 18
49 multiplied by 9 [the number of letters in forty nine] equals 441 which is the
square of 21
64 multiplied by 9 [the number of letters in sixty four] equals 576 which is the
square of 24
81 multiplied by 9 [the number of letters in eighty one] equals 729 which is the
square of 27
300 multiplied by 12 [the number of
letters in three hundred] equals 3600 which is the square of 60
304 multiplied by 19 [the number of letters in three hundred and four] equals
5776 which is the square of 76
324 multiplied by 25 [the number of letters in three hundred and twenty four]
equals 8100 which is the square of 90
726 multiplied by 24 [the number of letters in seven hundred and twenty six]
equals 17424 which is the square of 132
729 multiplied by 25 [the number of letters in seven hundred and twenty nine]
equals 18225 which is the square of 135
784 multiplied by 25 [the number of letters in seven hundred and eighty four]
equals 19600 which is the square of 140
864 multiplied by 24 [the number of letters in eight hundred and sixty four]
equals 20736 which is the square of 144
980 multiplied by 20 [the number of letters in nine hundred and eighty] equals
19600 which is the square of 140
more answers (up to one million)
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Have you read Craig's book yet?Craig Barton must surely be the voice of Mathematics teachers in the UK. His wonderful podcasts interviewing the industry experts have culminated in this wonderful book. As Craig says: "I genuinely believe I have never taught mathematics better, and my students have never learned more. I just wish I had known all of this twelve years ago..." more... "How I wish I’d taught maths' is an extraordinary and important book. Part guide to research, part memoir, part survival handbook, it’s a wonderfully accessible guide to the latest research on teaching mathematics, presented in a disarmingly honest and readable way. I know of no other book that presents as much usable research evidence on the dos and don’ts of mathematics teaching in such a clear and practical way. No matter how long you have been doing it, if you teach mathematics—from primary school to university—this book is for you." Dylan Wiliam, Emeritus Professor of Educational Assessment, UCL. 
Casio Classwiz CalculatorThere is currently a lot of talk about this new calculator being the best in its price range for use in the Maths classroom. The new ClassWiz features a highresolution display making it easier to view numerical formulas and symbols but it isn't a graphical calculator as such (it has the capacity to draw graphs on your smart phone or tablet, via a scannable QR code and an app). As well as basic spreadsheet mode and an equation solving feature you also get the ability to solve quadratic, cubic or quartic polynomial inequalities and the answer is given just as it should be written down, using the correct inequality symbols! This calculator has a highperformance processor and twice the memory of previous models ensuring speedy operation and superior computational power.more... 
GCSE Revision and PracticeWhatever exam board you use for GCSE Mathematics, this book by David Rayner remains an allround winner. With this latest edition presented in full colour and completely updated for the new GCSE(91) specifications, this uniquely effective text continues to increase your chance of obtaining a good grade. This book is targeted at the Higher tier GCSE, and provides a wealth of practice with careful progression, alongside substantial revision support for the newstyle grading and exam questions. With all the new topics included, and a dedicated section on using and applying mathematics, this unique resource can be used either as a course book over two or three years or as a revision text in the runup to exams. more... 
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In the game Scrabble, which number when played as a word is the same as its score?
Here is a list of the points available for the letter tiles:
(1 point)A, E, l, O, U, L, N, S, T, R
(2 points)D, G
(3 points)B, C, M, P
(4 points)F, H, V, W, Y
(5 points)K
(8 points)J, X
(10 points)Q, Z
The answer to the Extension is 12.