Once Upon a Time in the Land of Algebra…

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## Once Upon a Time in the Land of Algebra…

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**Story 1**Two of my favourite things in the world (apart from Maths) are KitKat Chunkys and Haribos … Choose some letters to represent KitKat Chunky’s and Haribos…**When I was in the shop the other day, I bought three packets**of Haribo, and two KitKat Chunkys… But that wasn’t enough, so I bought one more of each…**But even that wasn’t enough, so I bought three more**packets of Haribo, and two more KitKat Chunkys… But just before I could eat any of them, my greedy Mum stole six packets of Haribo, and three KitKat Chunkys off me…**The shopkeeper felt sorry so me, and so he made sure I left**the shop with TWICE as many of each sweet… How many sweets did I leave the shop with…**Story 2**Whilst I was watching England play Spain last night, I fancied a little snack, so I poured my self some peanuts in a bowl… Choose a letter to represent the number of peanuts in the bowl…**During the first half I ate 6 peanuts…**One peanut went down the ‘wrong way’, and I ended up coughing it back up into the bowl…**Whilst I was making a cup of tea, my greedy flatmate stole 5**peanuts… Because I caught her ‘red-handed’, she agreed to put some Malteasers in the bowl. Choose a letter to represent the number of Malteasers…**I told her that that wasn’t enough to make up for the loss**of my peanuts, so she gave me DOUBLE the number of Malteasers… How many peanuts and Malteasers did I end up with in my bowl…**Story 3**Last Friday, after a stressful week at The Minster School, I needed a drink of beer, so I went to the pub Choose a letter to represent the price of a pint of beer…**Whenever I ordered a pint of beer the barman told me that**because of a shortage, the price of beer had doubled… I wasn’t happy, but I was thirsty, so I ordered 3 pints…**I was also quite hungry, so I decided to buy some crisps…**Choose a letter to represent the price of crisps…**It really wasn’t my night, because the barman also told me**that the price of crisps had TRIPLED… I was feeling very hungry, so I still bought 4 packets…**Just before I left the pub I had one more packet of crisps,**and one more beer … How much money did I spent in total…**Algebra 218th November**• We can add or subtract ‘LIKE TERMS’ e.g. m + m = or 6t – 3t = BUT! We CANNOT add or subtract DIFFERENT terms e.g. 5s + 6t IS NOT 8m – 2y IS NOT 2m 3t 11st 6my**We can SIMPLIFY expressions by adding or subtracting the**LIKE TERMS e.g. 4p + 3t + 2p + 5t = 5x + 8y – 3y – 2x = 6a + 3b - 2c + 4 – b – 3a + c - 2 = 6p + 8t 3x + 5y 3a + 2b – c + 2**I think of a Number…**• I add 2 • I add 4 • I subtract 3 • I subtract 2 • I add 6 • And I get… 10**I think of a Number…**• I subtract 5 • I add 2 • I subtract 4 • I add 5 • I subtract 2 • And I get… 21**I think of a Number…**• I multiply it by 2 • I multiply it by 3 • I multiply it by 3 again • I divide it by 6 • I multiply it by 2 • And I get… 60