1. 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

2. 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

3. 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: c=20
c+15=20
c=20-15
c=5

4. 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

5. 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: 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