Our worldAges 13-15

Per-capita water consumption

Divide total daily community water use by population to find per-capita consumption in litres. Review suitability for your learners before teaching.

New variation Try interactive challenge Browse templates

Age band:Ages 13-15 Ages 16-18

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

Worksheet StudioPractice pack · Ages 13-15

Per-capita water consumption

Take your time. Show your thinking.

1. Population density is 8800 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 6 km from the centre?
8800 · 100 · 6 km · Per-capita water consumption
2. Population density is 8600 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 2 km from the centre?
8600 · 100 · 2 km · Per-capita water consumption
3. Population density is 6100 people/km² in the city centre and falls by 175 people/km² for each kilometre outward. What is the density 10 km from the centre?
6100 · 175 · 10 km · Per-capita water consumption
4. Population density is 6900 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 6 km from the centre?
6900 · 50 · 6 km · Per-capita water consumption
5. Population density is 6400 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 8 km from the centre?
6400 · 200 · 8 km · Per-capita water consumption
6. Population density is 7000 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 4 km from the centre?
7000 · 150 · 4 km · Per-capita water consumption
7. Population density is 5100 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 8 km from the centre?
5100 · 150 · 8 km · Per-capita water consumption
8. Population density is 5500 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 4 km from the centre?
5500 · 50 · 4 km · Per-capita water consumption
9. Population density is 7000 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 10 km from the centre?
7000 · 150 · 10 km · Per-capita water consumption
10. Population density is 5700 people/km² in the city centre and falls by 225 people/km² for each kilometre outward. What is the density 3 km from the centre?
5700 · 225 · 3 km · Per-capita water consumption
11. Population density is 7700 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 7 km from the centre?
7700 · 50 · 7 km · Per-capita water consumption
12. Population density is 7000 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 3 km from the centre?
7000 · 100 · 3 km · Per-capita water consumption

12 questions · Seed 49 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 13-15

Per-capita water consumption

Answers and reasoning. Review before teaching.

1. Population density is 8800 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 6 km from the centre?
8200 people/km²
Density drop = 6 × 100 = 600; 8800 − 600 = 8200 people/km².
2. Population density is 8600 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 2 km from the centre?
8400 people/km²
Density drop = 2 × 100 = 200; 8600 − 200 = 8400 people/km².
3. Population density is 6100 people/km² in the city centre and falls by 175 people/km² for each kilometre outward. What is the density 10 km from the centre?
4350 people/km²
Density drop = 10 × 175 = 1750; 6100 − 1750 = 4350 people/km².
4. Population density is 6900 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 6 km from the centre?
6600 people/km²
Density drop = 6 × 50 = 300; 6900 − 300 = 6600 people/km².
5. Population density is 6400 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 8 km from the centre?
4800 people/km²
Density drop = 8 × 200 = 1600; 6400 − 1600 = 4800 people/km².
6. Population density is 7000 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 4 km from the centre?
6400 people/km²
Density drop = 4 × 150 = 600; 7000 − 600 = 6400 people/km².
7. Population density is 5100 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 8 km from the centre?
3900 people/km²
Density drop = 8 × 150 = 1200; 5100 − 1200 = 3900 people/km².
8. Population density is 5500 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 4 km from the centre?
5300 people/km²
Density drop = 4 × 50 = 200; 5500 − 200 = 5300 people/km².
9. Population density is 7000 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 10 km from the centre?
5500 people/km²
Density drop = 10 × 150 = 1500; 7000 − 1500 = 5500 people/km².
10. Population density is 5700 people/km² in the city centre and falls by 225 people/km² for each kilometre outward. What is the density 3 km from the centre?
5025 people/km²
Density drop = 3 × 225 = 675; 5700 − 675 = 5025 people/km².
11. Population density is 7700 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 7 km from the centre?
7350 people/km²
Density drop = 7 × 50 = 350; 7700 − 350 = 7350 people/km².
12. Population density is 7000 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 3 km from the centre?
6700 people/km²
Density drop = 3 × 100 = 300; 7000 − 300 = 6700 people/km².

12 questions · Seed 49 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Per-capita water consumption

Take your time. Show your thinking.

1. Population density is 8800 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 6 km from the centre?
8800 · 100 · 6 km · Per-capita water consumption
2. Population density is 8600 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 2 km from the centre?
8600 · 100 · 2 km · Per-capita water consumption
3. Population density is 6100 people/km² in the city centre and falls by 175 people/km² for each kilometre outward. What is the density 10 km from the centre?
6100 · 175 · 10 km · Per-capita water consumption
4. Population density is 6900 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 6 km from the centre?
6900 · 50 · 6 km · Per-capita water consumption
5. Population density is 6400 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 8 km from the centre?
6400 · 200 · 8 km · Per-capita water consumption
6. Population density is 7000 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 4 km from the centre?
7000 · 150 · 4 km · Per-capita water consumption
7. Population density is 5100 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 8 km from the centre?
5100 · 150 · 8 km · Per-capita water consumption
8. Population density is 5500 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 4 km from the centre?
5500 · 50 · 4 km · Per-capita water consumption
9. Population density is 7000 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 10 km from the centre?
7000 · 150 · 10 km · Per-capita water consumption
10. Population density is 5700 people/km² in the city centre and falls by 225 people/km² for each kilometre outward. What is the density 3 km from the centre?
5700 · 225 · 3 km · Per-capita water consumption
11. Population density is 7700 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 7 km from the centre?
7700 · 50 · 7 km · Per-capita water consumption
12. Population density is 7000 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 3 km from the centre?
7000 · 100 · 3 km · Per-capita water consumption

12 questions · Seed 49 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Per-capita water consumption

Answers and reasoning. Review before teaching.

1. Population density is 8800 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 6 km from the centre?
8200 people/km²
Density drop = 6 × 100 = 600; 8800 − 600 = 8200 people/km².
2. Population density is 8600 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 2 km from the centre?
8400 people/km²
Density drop = 2 × 100 = 200; 8600 − 200 = 8400 people/km².
3. Population density is 6100 people/km² in the city centre and falls by 175 people/km² for each kilometre outward. What is the density 10 km from the centre?
4350 people/km²
Density drop = 10 × 175 = 1750; 6100 − 1750 = 4350 people/km².
4. Population density is 6900 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 6 km from the centre?
6600 people/km²
Density drop = 6 × 50 = 300; 6900 − 300 = 6600 people/km².
5. Population density is 6400 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 8 km from the centre?
4800 people/km²
Density drop = 8 × 200 = 1600; 6400 − 1600 = 4800 people/km².
6. Population density is 7000 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 4 km from the centre?
6400 people/km²
Density drop = 4 × 150 = 600; 7000 − 600 = 6400 people/km².
7. Population density is 5100 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 8 km from the centre?
3900 people/km²
Density drop = 8 × 150 = 1200; 5100 − 1200 = 3900 people/km².
8. Population density is 5500 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 4 km from the centre?
5300 people/km²
Density drop = 4 × 50 = 200; 5500 − 200 = 5300 people/km².
9. Population density is 7000 people/km² in the city centre and falls by 150 people/km² for each kilometre outward. What is the density 10 km from the centre?
5500 people/km²
Density drop = 10 × 150 = 1500; 7000 − 1500 = 5500 people/km².
10. Population density is 5700 people/km² in the city centre and falls by 225 people/km² for each kilometre outward. What is the density 3 km from the centre?
5025 people/km²
Density drop = 3 × 225 = 675; 5700 − 675 = 5025 people/km².
11. Population density is 7700 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 7 km from the centre?
7350 people/km²
Density drop = 7 × 50 = 350; 7700 − 350 = 7350 people/km².
12. Population density is 7000 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 3 km from the centre?
6700 people/km²
Density drop = 3 × 100 = 300; 7000 − 300 = 6700 people/km².

12 questions · Seed 49 · Age guidance, not curriculum certification