Numbers, Simple Math and Dimensions (from the 'Lessons')

Some of the material can also be found on the Vocabulary: Numbers page, but the paragraphs of the lessons linked to below are a little more elaborate.

Numbers
Numbers 0-10 - Numbers 10-20 - Numbers 20-100 - 2 - Numbers 100-9999 - High and Low Numbers - Ordinal Numbers

Simple Math
Calculations and Simple Math - Fractions

The Metric System - The Metric System

Dimensions and Metric and Imperial Measurements Compared
Length, Width, Depth and Height - 2 - Volume - Weight - Celsius and Fahrenheit

Smartphone page: - Numbers, Calculations, Simple Math and Dimensions

Related
Money - Basic Time ... 2 ... 3 ... Dutch Time Thesaurus



Other Overview Pages: Names - Words - Pronunciation - Grammar - Listening - Lessons - The Essays