Copy and complete the following fraction to decimal conversions: 43/100, 9/10, 2/5, 1/4

$$\frac{43}{100} = 0,43$$

The completed expression is: $\boxed{0,43}$

2. Copy and complete: $\frac{9}{10} = \underline{\hspace{1cm}}$

$$\frac{9}{10} = 0,9$$

The completed expression is: $\boxed{0,9}$

3. Copy and complete: $\frac{2}{5} = \frac{\square}{10} = \underline{\hspace{1cm}}$

To get 10 from 5, multiply by 2. Multiply the numerator by the same factor.

$$\frac{2}{5} = \frac{2 \times 2}{5 \times 2} = \frac{4}{10}$$

$$\frac{4}{10} = 0,4$$

The completed expression is: $\boxed{\frac{4}{10} = 0,4}$

4. Copy and complete: $\frac{1}{4} = \frac{\square}{100} = \underline{\hspace{1cm}}$

To get 100 from 4, multiply by 25. Multiply the numerator by the same factor.

$$\frac{1}{4} = \frac{1 \times 25}{4 \times 25} = \frac{25}{100}$$

$$\frac{25}{100} = 0,25$$

The completed expression is: $\boxed{\frac{25}{100} = 0,25}$

5. Copy and complete: $\frac{11}{20} = \frac{\square}{100} = \underline{\hspace{1cm}}$

To get 100 from 20, multiply by 5. Multiply the numerator by the same factor.

$$\frac{11}{20} = \frac{11 \times 5}{20 \times 5} = \frac{55}{100}$$

$$\frac{55}{100} = 0,55$$

The completed expression is: $\boxed{\frac{55}{100} = 0,55}$

6. Copy and complete: $\frac{19}{20} = \frac{\square}{100} = \underline{\hspace{1cm}}$

To get 100 from 20, multiply by 5. Multiply the numerator by the same factor.

$$\frac{19}{20} = \frac{19 \times 5}{20 \times 5} = \frac{95}{100}$$

$$\frac{95}{100} = 0,95$$

The completed expression is: $\boxed{\frac{95}{100} = 0,95}$