Intervals and Absolute Value
How far is a number from zero, or from 37 degrees? Absolute value measures distance and ignores direction.
What this unit covers
Unit 1: The Real Number System, Proportion and Units
- 1 The Real Number SystemEvery number you have ever used belongs to one big family. Here is who is related to whom. · 12 min
- 2 Intervals and Absolute ValueHow far is a number from zero, or from 37 degrees? Absolute value measures distance and ignores direction. · 10 min
- 3 Ratio, Proportion and PercentagesSharing money, scaling a recipe, reading a discount. The arithmetic of fair comparison. · 10 min
- 4 Units of Measurement and Dosage CalculationsMilligrams, millilitres and drops per minute. Ratio and proportion doing a real job on a ward. · 10 min