Calculate 'best buys' by comparing price per unit, or quantity per monetary unit, eg 500 grams for $4.50 compared with 300 grams for $2.75

1. Buttering up the customers: Price comparison
2. Dig for the food facts: Investigate proportional relationships
3. Tiling to scale: Investigate proportional relationships
4. Let's go SHOPPING!!!! - best value, price/volume
5. Let's go SHOPPING!!!! - best value, price/volume
6. Let's go SHOPPING!!!! - best value, price/volume
7. Let's go SHOPPING!!!! - best value, price/volume
8. Fleur's Shopping Selection - best value, price/volume
9. Phil The Fruiterer - calculate best value given masses and prices
10. Phil The Fruiterer - calculate best value given masses and prices
11. Phil's Great Grapes - calculate best value given masses and prices
12. Phil's Great Grapes - calculate best value given masses and prices