1. The product of two odd numbers is 25.
What are they?
2. The difference between two square numbers is 8.
What are they?
3. The sum of three prime numbers is 31.
What are they?
4. The ratio of two even numbers is 11:8.
What are they?
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Topics: Starter  Arithmetic  Number  Puzzles  Ratio
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Previous Day  This starter is for 4 June  Next Day
1. 1 and 25 or 5 and 5 (and their negatives).
2. 1 and 9. Could there be any other solutions?
3. 3, 5 and 23 or 3, 11 and 17 or 5, 7 and 19 or 5, 13 and 13 or 7, 7 and 17 or 7, 11 and 13.
4. 22 and 16 or 44 and 32 or 66 and 48 or ...
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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... 