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:
-
12 + 12 + 12 + 12: This adds up to 48 (since 12 * 4 = 48). This is correct.
-
12 ÷ 4: This equals 3, which does not represent the number of inches in 4 feet. This is incorrect.
-
4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4: This adds up to 48 (since 4 * 12 = 48). This is correct.
-
12 ÷ 4: This is the same expression as above (it equals 3), which is incorrect. This remains incorrect.
-
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
1 answer