Question

There are 12 inches in a foot. Which expressions describe how many inches are in 4 feet? Check the THREE that apply. (3 points)
• 12 + 12 + 12 + 12.
• 12 ÷ 4.
•4+4+4+4+4+4+4+4 + 4 + 4 + 4 + 4
•12 ÷ 4
• 4 × 12.

Answer 1

To find out how many inches are in 4 feet, we can use the conversion factor that there are 12 inches in a foot. Therefore, the total number of inches in 4 feet can be calculated as:

\[ 4 \text{ feet} \times 12 \text{ inches/foot} = 48 \text{ inches} \]

Now, let's evaluate the provided expressions:

1. **12 + 12 + 12 + 12**: This adds up to 48 (since 12 * 4 = 48). **This is correct.**

2. **12 ÷ 4**: This equals 3, which does not represent the number of inches in 4 feet. **This is incorrect.**

3. **4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4**: This adds up to 48 (since 4 * 12 = 48). **This is correct.**

4. **12 ÷ 4**: This is the same expression as above (it equals 3), which is incorrect. **This remains incorrect.**

5. **4 × 12**: This equals 48 (the calculation for inches in 4 feet). **This is correct.**

The three correct expressions are:
- **12 + 12 + 12 + 12**
- **4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4**
- **4 × 12**