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### Theory

 1 Concept of proportion 2 Proportionality law 3 Unitary method 4 Application of ratios

### Exercises

 1 Check the points are in proportion Difficulty: easy 3 2 Fill in the unknown box Difficulty: easy 3 3 Say true or false Difficulty: easy 3 4 Determine the cost Difficulty: easy 3 5 Fill in the boxes Difficulty: medium 4 6 Test whether true or false Difficulty: medium 4 7 Find the distance travelled Difficulty: medium 3 8 Calculate the unknown value Difficulty: medium 4 9 Determine the expected distance travelled Difficulty: medium 4 10 Calculate the required number Difficulty: hard 5 11 Verify the proportionality and hence find means and extremes Difficulty: hard 5 12 Determine the number of objects coloured Difficulty: hard 5 13 Calculate the cost and quantity of the product Difficulty: hard 5

### Tests

 1 Training test Difficulty: medium 8 2 Training test Difficulty: medium 10

### Teacher manual

 1 Methodical recommendation