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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.

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Worksheet StudioPractice pack · Ages 13-15

Per-capita water consumption

Take your time. Show your thinking.

1. Population density is 5800 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 4 km from the centre?
5800 · 125 · 4 km · Per-capita water consumption
2. Population density is 6200 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?
6200 · 225 · 3 km · Per-capita water consumption
3. Population density is 4300 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 2 km from the centre?
4300 · 200 · 2 km · Per-capita water consumption
4. Population density is 3900 people/km² in the city centre and falls by 250 people/km² for each kilometre outward. What is the density 8 km from the centre?
3900 · 250 · 8 km · Per-capita water consumption
5. 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
6. Population density is 7700 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 5 km from the centre?
7700 · 125 · 5 km · Per-capita water consumption
7. Population density is 4500 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 8 km from the centre?
4500 · 50 · 8 km · Per-capita water consumption
8. Population density is 5500 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 2 km from the centre?
5500 · 200 · 2 km · Per-capita water consumption
9. Population density is 4300 people/km² in the city centre and falls by 175 people/km² for each kilometre outward. What is the density 3 km from the centre?
4300 · 175 · 3 km · Per-capita water consumption
10. Population density is 3400 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 3 km from the centre?
3400 · 125 · 3 km · Per-capita water consumption
11. Population density is 4200 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 5 km from the centre?
4200 · 100 · 5 km · Per-capita water consumption
12. Population density is 8000 people/km² in the city centre and falls by 75 people/km² for each kilometre outward. What is the density 3 km from the centre?
8000 · 75 · 3 km · Per-capita water consumption

12 questions · Seed 104729 · 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 5800 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 4 km from the centre?
5300 people/km²
Density drop = 4 × 125 = 500; 5800 − 500 = 5300 people/km².
2. Population density is 6200 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?
5525 people/km²
Density drop = 3 × 225 = 675; 6200 − 675 = 5525 people/km².
3. Population density is 4300 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 2 km from the centre?
3900 people/km²
Density drop = 2 × 200 = 400; 4300 − 400 = 3900 people/km².
4. Population density is 3900 people/km² in the city centre and falls by 250 people/km² for each kilometre outward. What is the density 8 km from the centre?
1900 people/km²
Density drop = 8 × 250 = 2000; 3900 − 2000 = 1900 people/km².
5. 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.
6. Population density is 7700 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 5 km from the centre?
7075 people/km²
Density drop = 5 × 125 = 625; 7700 − 625 = 7075 people/km².
7. Population density is 4500 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 8 km from the centre?
4100 people/km²
Density drop = 8 × 50 = 400; 4500 − 400 = 4100 people/km².
8. Population density is 5500 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 2 km from the centre?
5100 people/km²
Density drop = 2 × 200 = 400; 5500 − 400 = 5100 people/km².
9. Population density is 4300 people/km² in the city centre and falls by 175 people/km² for each kilometre outward. What is the density 3 km from the centre?
3775 people/km²
Density drop = 3 × 175 = 525; 4300 − 525 = 3775 people/km².
10. Population density is 3400 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 3 km from the centre?
3025 people/km²
Density drop = 3 × 125 = 375; 3400 − 375 = 3025 people/km².
11. Population density is 4200 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 5 km from the centre?
3700 people/km²
Density drop = 5 × 100 = 500; 4200 − 500 = 3700 people/km².
12. Population density is 8000 people/km² in the city centre and falls by 75 people/km² for each kilometre outward. What is the density 3 km from the centre?
7775 people/km²
Density drop = 3 × 75 = 225; 8000 − 225 = 7775 people/km².

12 questions · Seed 104729 · 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 5800 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 4 km from the centre?
5800 · 125 · 4 km · Per-capita water consumption
2. Population density is 6200 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?
6200 · 225 · 3 km · Per-capita water consumption
3. Population density is 4300 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 2 km from the centre?
4300 · 200 · 2 km · Per-capita water consumption
4. Population density is 3900 people/km² in the city centre and falls by 250 people/km² for each kilometre outward. What is the density 8 km from the centre?
3900 · 250 · 8 km · Per-capita water consumption
5. 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
6. Population density is 7700 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 5 km from the centre?
7700 · 125 · 5 km · Per-capita water consumption
7. Population density is 4500 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 8 km from the centre?
4500 · 50 · 8 km · Per-capita water consumption
8. Population density is 5500 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 2 km from the centre?
5500 · 200 · 2 km · Per-capita water consumption
9. Population density is 4300 people/km² in the city centre and falls by 175 people/km² for each kilometre outward. What is the density 3 km from the centre?
4300 · 175 · 3 km · Per-capita water consumption
10. Population density is 3400 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 3 km from the centre?
3400 · 125 · 3 km · Per-capita water consumption
11. Population density is 4200 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 5 km from the centre?
4200 · 100 · 5 km · Per-capita water consumption
12. Population density is 8000 people/km² in the city centre and falls by 75 people/km² for each kilometre outward. What is the density 3 km from the centre?
8000 · 75 · 3 km · Per-capita water consumption

12 questions · Seed 104729 · 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 5800 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 4 km from the centre?
5300 people/km²
Density drop = 4 × 125 = 500; 5800 − 500 = 5300 people/km².
2. Population density is 6200 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?
5525 people/km²
Density drop = 3 × 225 = 675; 6200 − 675 = 5525 people/km².
3. Population density is 4300 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 2 km from the centre?
3900 people/km²
Density drop = 2 × 200 = 400; 4300 − 400 = 3900 people/km².
4. Population density is 3900 people/km² in the city centre and falls by 250 people/km² for each kilometre outward. What is the density 8 km from the centre?
1900 people/km²
Density drop = 8 × 250 = 2000; 3900 − 2000 = 1900 people/km².
5. 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.
6. Population density is 7700 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 5 km from the centre?
7075 people/km²
Density drop = 5 × 125 = 625; 7700 − 625 = 7075 people/km².
7. Population density is 4500 people/km² in the city centre and falls by 50 people/km² for each kilometre outward. What is the density 8 km from the centre?
4100 people/km²
Density drop = 8 × 50 = 400; 4500 − 400 = 4100 people/km².
8. Population density is 5500 people/km² in the city centre and falls by 200 people/km² for each kilometre outward. What is the density 2 km from the centre?
5100 people/km²
Density drop = 2 × 200 = 400; 5500 − 400 = 5100 people/km².
9. Population density is 4300 people/km² in the city centre and falls by 175 people/km² for each kilometre outward. What is the density 3 km from the centre?
3775 people/km²
Density drop = 3 × 175 = 525; 4300 − 525 = 3775 people/km².
10. Population density is 3400 people/km² in the city centre and falls by 125 people/km² for each kilometre outward. What is the density 3 km from the centre?
3025 people/km²
Density drop = 3 × 125 = 375; 3400 − 375 = 3025 people/km².
11. Population density is 4200 people/km² in the city centre and falls by 100 people/km² for each kilometre outward. What is the density 5 km from the centre?
3700 people/km²
Density drop = 5 × 100 = 500; 4200 − 500 = 3700 people/km².
12. Population density is 8000 people/km² in the city centre and falls by 75 people/km² for each kilometre outward. What is the density 3 km from the centre?
7775 people/km²
Density drop = 3 × 75 = 225; 8000 − 225 = 7775 people/km².

12 questions · Seed 104729 · Age guidance, not curriculum certification