What is the difference between a rule and a strategy?

What is the difference between a rule and a strategy?

A rule in maths is something that has to happen and is the only way to do it. A strategy is a way to work something out. There are lots of strategies you can use when working with numbers.

Example                                           

Rules:

When doing a algorithm work from the lowest number to the highest.

When multiplying a number by ten you just add a zero to that number. Or move the decimal point one space to the right.

When doing place value and multiplying by ten just move the decimal to the left.

Example

Strategies:

Use an algorithm.

                                      

Double when multiplying by two. For example 4 multiplied by two is the the same as 4 plus 4.

Use BO(E)DMAS ( brackets of (exponents) division, multiplication, addition, subtraction.)