Question

1см2-10мм2= 1см2-1мм2= 100мм2-10мм2= 1м2-10см2= 1га-10а= 1дм2-10см2= 1дм2-1см2= 1км2-300 000м2=

Answer 1

99см²

90мм²

9 990см²

99а

90см²

99см²

700 000м²

Answer 2

Let's calculate the values:

1. 1 cm² - 10 mm² = 1 cm² - (10 mm * 10 mm) = 1 cm² - 100 mm² = 1 cm² - 0.1 cm² = 0.9 cm²

2. 1 cm² - 1 mm² = 1 cm² - (1 mm * 1 mm) = 1 cm² - 1 mm² = 1 cm² - 0.01 cm² = 0.99 cm²

3. 100 mm² - 10 mm² = 100 mm² - 10 mm² = 90 mm²

4. 1 m² - 10 cm² = 1 m² - (10 cm * 10 cm) = 1 m² - 100 cm² = 1 m² - 0.01 m² = 0.99 m²

5. 1 ha (hectare) - 10 a (ares) = 1 ha - (10 a * 100 m²) = 1 ha - 1000 m² = 10,000 m² - 1000 m² = 9,000 m²

6. 1 dm² - 10 cm² = 1 dm² - (10 cm * 10 cm) = 1 dm² - 100 cm² = 1 dm² - 1 m² = 0.09 dm²

7. 1 dm² - 1 cm² = 1 dm² - (1 cm * 1 cm) = 1 dm² - 1 cm² = 1 dm² - 0.01 dm² = 0.99 dm²

8. 1 km² - 300,000 m² = 1,000,000 m² - 300,000 m² = 700,000 m²