How many sheets of paper
would make a pile as tall as you?
About 16 000
How much do 10 apples cost?
5 apples cost £2
£4
- Direct proportion
- When one amount is multiplied, the other is multiplied by the same number.
This recipe makes 10 flapjacks.
| 10 flapjacks | 25 flapjacks |
|---|
| Oats | 250 g | |
|---|
| Butter | 100 g | |
|---|
| Syrup | 4 tbsp | |
|---|
The cost is directly proportional to the number of days.
4 pens cost £3.60. How much do 7 pens cost? £6.30
£3.6090p£6.30
6 pens cost £4.20. How much do 5 pens cost? £3.50
£4.20
4 pens cost £3.60. How much do 7 pens cost? £6.30
£3.60
3 pens cost £2.55. How much do 8 pens cost? £6.80
£2.55
4 pens cost £3.60. How much do 7 pens cost? £6.30
£3.60
5 tickets cost £42.50. How much do 3 tickets cost? £25.50
£42.50
4 pens cost £3.60. How much do 7 pens cost? £6.30
£3.60
3 bricks weigh 7.2 kg. How much do 10 bricks weigh? 24 kg
7.2 kg
4 pens cost £3.60. How much do 7 pens cost? £6.30
£3.60
8 rolls cost £2.80. How much do 9 rolls cost? £3.15
£2.80
500 sheets of paper make a pile 5 cm tall. How many sheets are in a pile 32 cm tall?
3200 sheets£40 is worth 52 dollars. How many pounds are 91 dollars worth?
£70A shop sells 2 kg of rice for £3.40 and 5 kg for £8. Is the cost directly proportional to the mass? Show how you know.
No: 5 kg would be £8.50
A recipe for 3 people uses 210 g of pasta. How much pasta is needed for 9 people?
630 g6 notebooks cost £7.20. How much do 5 notebooks cost?
£6A cleaner charges £24 for 2 hours and £40 for 4 hours. Is the charge directly proportional to the time? Explain.
No: 4 hours would be £48
Exit tickets to print
