Algebraic Operations By the end of this unit you will know : That Algebraic operations follow the same conventions and order as arithmetic operations How to simplify linear expressions by collecting like terms Construct and solve simple linear equations Keywords: Value Equation Term Solve Unkown Horizontal Vertical

ab=20 13+9=22 so 22-13=9 In maths we can reverse the process, so Remember: 13+9=22 so 22-13=9 In maths we can reverse the process, so Subtraction and Addition are opposites Multiplication and Division are opposites Algebra follows the rules of arithmatic We don't however use multiplication signs: Just look at the confusion it would cause!! axb=20 (what!!) so we say: ab=20

Hot Cross Problems! In a HOT Cross, horizontal and vertical lines add up to the same total. Below is a Hot Cross 20. That means the horizontal and vertical both add up to 20 4 b 11 6 c Horizontal: b+11+6=20 b+17=20 b=20-17 b=3 Vertical: 4+11+c=20 c+15=20 c=20-15 c=5

Hot Cross Problems! In a HOT Cross, horizontal and vertical lines add up to the same total. Below is a Hot Cross 20. That means the horizontal and vertical both add up to 20 4 8 b 6 a

Stop Here and work out the vertical! Hot Cross Problems! In a HOT Cross, horizontal and vertical lines add up to the same total. Below is a Hot Cross 20. That means the horizontal and vertical both add up to 20 9 8 b 6 a Horizontal: a+b+6=20 a+b=20-6=14 a+b+14 Stop Here and work out the vertical! Vertical: 9+b+8=20 b+17=20 b=20-7 b=3 Going back to the horizontal: a+b=14 a+3=14 a=14-3 a=11