Express in kilometres, using decimals:
a. 5 km 245 m
b. 9 km 46 m
c. 435 m
d. 56 m
e. 4m

Answer

To express the given measurements in kilometers using decimals, we will follow these steps for each part:

### a. Convert 5 km 245 m to kilometers
1. **Identify the conversion**: We know that 1 kilometer = 1000 meters.
2. **Convert meters to kilometers**:
- Convert 245 meters to kilometers:
\[ 245 \text{ m} = \frac{245}{1000} \text{ km} = 0.245 \text{ km} \]
3. **Add the kilometers**:
- Now add the kilometers:
\[ 5 \text{ km} + 0.245 \text{ km} = 5.245 \text{ km} \]

**Final Answer**: 5 km 245 m = **5.245 km**

### b. Convert 9 km 46 m to kilometers
1. **Identify the conversion**: 1 kilometer = 1000 meters.
2. **Convert meters to kilometers**:
- Convert 46 meters to kilometers:
\[ 46 \text{ m} = \frac{46}{1000} \text{ km} = 0.046 \text{ km} \]
3. **Add the kilometers**:
- Now add the kilometers:
\[ 9 \text{ km} + 0.046 \text{ km} = 9.046 \text{ km} \]

**Final Answer**: 9 km 46 m = **9.046 km**

### c. Convert 435 m to kilometers
1. **Identify the conversion**: 1 kilometer = 1000 meters.
2. **Convert meters to kilometers**:
- Convert 435 meters to kilometers:
\[ 435 \text{ m} = \frac{435}{1000} \text{ km} = 0.435 \text{ km} \]

**Final Answer**: 435 m = **0.435 km**

### d. Convert 56 m to kilometers
1. **Identify the conversion**: 1 kilometer = 1000 meters.
2. **Convert meters to kilometers**:
- Convert 56 meters to kilometers:
\[ 56 \text{ m} = \frac{56}{1000} \text{ km} = 0.056 \text{ km} \]

**Final Answer**: 56 m = **0.056 km**

### e. Convert 4 m to kilometers
1. **Identify the conversion**: 1 kilometer = 1000 meters.
2. **Convert meters to kilometers**:
- Convert 4 meters to kilometers:
\[ 4 \text{ m} = \frac{4}{1000} \text{ km} = 0.004 \text{ km} \]

**Final Answer**: 4 m = **0.004 km**

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