Convert the following lengths from centimeters to meters and centimeters: 240 cm, 398 cm, 818 cm, 2133 cm.

$$240 \text{ cm} = \frac{240}{100} \text{ m} = 2 \text{ m } \text{ with a remainder of } 40 \text{ cm}$$

So, $240 \text{ cm} = 2 \text{ m } 40 \text{ cm}$.
The correct option is (b).

$$\boxed{\text{(b) } 2 \text{ m } 40 \text{ cm}}$$

2. $398 \text{ cm}$

$$398 \text{ cm} = \frac{398}{100} \text{ m} = 3 \text{ m } \text{ with a remainder of } 98 \text{ cm}$$

So, $398 \text{ cm} = 3 \text{ m } 98 \text{ cm}$.
The correct option is (c).

$$\boxed{\text{(c) } 3 \text{ m } 98 \text{ cm}}$$

3. $818 \text{ cm}$

$$818 \text{ cm} = \frac{818}{100} \text{ m} = 8 \text{ m } \text{ with a remainder of } 18 \text{ cm}$$

So, $818 \text{ cm} = 8 \text{ m } 18 \text{ cm}$.
The correct option is (d).

$$\boxed{\text{(d) } 8 \text{ m } 18 \text{ cm}}$$

4. $2133 \text{ cm}$

$$2133 \text{ cm} = \frac{2133}{100} \text{ m} = 21 \text{ m } \text{ with a remainder of } 33 \text{ cm}$$

So, $2133 \text{ cm} = 21 \text{ m } 33 \text{ cm}$.
The correct option is (b).

$$\boxed{\text{(b) } 21 \text{ m } 33 \text{ cm}}$$

5. $967 \text{ cm}$

$$967 \text{ cm} = \frac{967}{100} \text{ m} = 9 \text{ m } \text{ with a remainder of } 67 \text{ cm}$$

So, $967 \text{ cm} = 9 \text{ m } 67 \text{ cm}$.
The correct option is (a).

$$\boxed{\text{(a) } 9 \text{ m } 67 \text{ cm}}$$

** - Wednesday: Add the following in centimetres**

1. $80 \text{ cm} + 75 \text{ cm}$

$$80 \text{ cm} + 75 \text{ cm} = 155 \text{ cm}$$

The correct option is (a).

$$\boxed{\text{(a) } 155 \text{ cm}}$$

2. $97 \text{ cm} + 75 \text{ cm}$

$$97 \text{ cm} + 75 \text{ cm} = 172 \text{ cm}$$

The correct option is (b).

$$\boxed{\text{(b) } 172 \text{ cm}}$$

3. $42 \text{ cm} + 56 \text{ cm}$

$$42 \text{ cm} + 56 \text{ cm} = 98 \text{ cm}$$

The correct option is (c).

$$\boxed{\text{(c) } 98 \text{ cm}}$$

4. $82 \text{ cm} + 12 \text{ cm}$

$$82 \text{ cm} + 12 \text{ cm} = 94 \text{ cm}$$

The correct option is (d).

$$\boxed{\text{(d) } 94 \text{ cm}}$$

5. $45 \text{ cm} + 61 \text{ cm}$

$$45 \text{ cm} + 61 \text{ cm} = 106 \text{ cm}$$

The correct option is (a).

$$\boxed{\text{(a) } 106 \text{ cm}}$$