Answer:
1. 1 ÷ 1000 × 3000 = 3
2. 1 ÷ 1500 × 3000 = 2
3. 1 ÷ 2000 × 3000 = 1.5
4. 1 ÷ 2500 × 3000 = 1.2
5. 1 ÷ 3000 × 3000 = 1
3.5m questions
4.5m answers