Express as cm using decimals : (i) 8 mm (ii) 263 mm (iii) 13 cm 3 mm.

Answer

To express the given measurements in centimeters using decimals, we will follow these steps:

### Step 1: Convert 8 mm to cm
1. **Understanding the conversion**: We know that 1 cm = 10 mm.
2. **Conversion formula**: To convert mm to cm, we divide the number of mm by 10.
3. **Calculation**:
\[ 8 \text{ mm} = \frac{8}{10} \text{ cm} = 0.8 \text{ cm} \]

### Step 2: Convert 263 mm to cm
1. **Understanding the conversion**: Again, we will use the same conversion principle.
2. **Calculation**:
\[ 263 \text{ mm} = \frac{263}{10} \text{ cm} = 26.3 \text{ cm} \]

### Step 3: Convert 13 cm and 3 mm to cm
1. **Understanding the conversion**: We already have 13 cm, and we need to convert 3 mm to cm.
2. **Convert 3 mm to cm**:
\[ 3 \text{ mm} = \frac{3}{10} \text{ cm} = 0.3 \text{ cm} \]
3. **Add the two values together**:
\[ 13 \text{ cm} + 0.3 \text{ cm} = 13.3 \text{ cm} \]

### Final Answers:
(i) 8 mm = 0.8 cm
(ii) 263 mm = 26.3 cm
(iii) 13 cm 3 mm = 13.3 cm

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