Investigate Numbers and Patterns

Quick and easy way to multiply 2-digit numbers by 11 - why does it work?

More investigations on adding consecutive numbers, dividing by a half, writing a simple formula as well as shape patterns.

Plenty of ideas to help with investigations and inventing similar problems.

Some great patterns can be found when dividing by 9 or 11, and using square numbers.

A first look at triangle numbers.

Complete a variety of number sequences and say what the rule for each sequence is. Some negative number work as well.

More on triangle numbers.

Try the Ancient Egyptian method of multiplying. Great, if you are good at adding up!