To convert the mixed number \(5 \frac{3}{16}\) to a decimal using long division, we first need to convert the fraction \( \frac{3}{16} \) to its decimal form.
Step 1: Perform Long Division for \( \frac{3}{16} \)
- Set up the long division of \(3 \div 16\).
- Since 16 is greater than 3, we know that \(16\) goes into \(3\) zero times. So we write \(0.\) in the quotient and add a decimal point, bringing down a zero (making it \(30\)).
- Determine how many times \(16\) goes into \(30\):
- \(16 \times 1 = 16\) (it fits once)
- Write \(1\) in the quotient.
- Subtract \(16\) from \(30\): \(30 - 16 = 14\).
- Bring down another zero, making it \(140\).
- Determine how many times \(16\) goes into \(140\):
- \(16 \times 8 = 128\) (it fits eight times)
- Write \(8\) in the quotient.
- Subtract \(128\) from \(140\): \(140 - 128 = 12\).
- Bring down another zero, making it \(120\).
- Determine how many times \(16\) goes into \(120\):
- \(16 \times 7 = 112\) (it fits seven times)
- Write \(7\) in the quotient.
- Subtract \(112\) from \(120\): \(120 - 112 = 8\).
- Bring down another zero, making it \(80\).
- Determine how many times \(16\) goes into \(80\):
- \(16 \times 5 = 80\) (it fits five times)
- Write \(5\) in the quotient.
- Subtract \(80\) from \(80\): \(80 - 80 = 0\).
Result of Long Division
Combining all the parts of the quotient, we have:
\[ \frac{3}{16} = 0.1875 \]
Step 2: Add the Whole Number
Now, add the integral part \(5\) to the decimal part \(0.1875\):
\[ 5 + 0.1875 = 5.1875 \]
Final Answer
Thus, the decimal form of \(5 \frac{3}{16}\) is:
\[ \boxed{5.1875} \]
So the correct choice from your options is \(d\) \(5.1875\).