Algebra is where letters or symbols are used to represent numbers in calculations.

For example: 3x + 2 = 14

In this case, x=4 because 3 multiplied by 4 is 12, add 2 makes 14.

 

Curriculum Link:

I can apply my knowledge
of number facts to solve
problems where an
unknown value is
represented by a symbol
or letter.
MTH 2-15a