Scientific notation

Approximating square roots

You can learn how to approximate square roots by watching this video from Khan Academy, and practising with the corresponding exercises.

Rounding decimals

This is the video we watched in class this morning:

Decimal numbers on the number line

Here you are the links to websites related with the number line:

Zoomable Number Line

Khan Academy

How to read decimal numbers

Dividing fractions

With the following video you can remember how to divide fractions:

Just remember: KEEP, CHANGE AND FLIP!

Order of operations