Question 251 of 480
What is the decimal equivalent of the fraction 7/16 rounded to two decimal places?
Correct Answer:
B
Explanation
To find the decimal equivalent of the fraction \( \frac{7}{16} \) and round it to two decimal places, we will follow a step-by-step approach.
### Step 1: Convert the Fraction to Decimal
To convert the fraction \( \frac{7}{16} \) into a decimal, we can perform the division of the numerator (7) by the denominator (16).
1. **Perform the Division**:
- Divide 7 by 16.
- This can be done using long division or a calculator.
Using long division:
- 16 goes into 7 zero times, so we write 0. and add a decimal point.
- We then consider 70 (adding a zero to 7).
- 16 goes into 70 four times (since \( 16 \times 4 = 64 \)).
- Subtract 64 from 70, which gives us 6.
- Bring down another 0 to make it 60.
- 16 goes into 60 three times (since \( 16 \times 3 = 48 \)).
- Subtract 48 from 60, which gives us 12.
- Bring down another 0 to make it 120.
- 16 goes into 120 seven times (since \( 16 \times 7 = 112 \)).
- Subtract 112 from 120, which gives us 8.
- Bring down another 0 to make it 80.
- 16 goes into 80 five times (since \( 16 \times 5 = 80 \)).
- Subtract 80 from 80, which gives us 0.
So, the division gives us:
\[
\frac{7}{16} = 0.4375
\]
### Step 2: Round to Two Decimal Places
Now that we have the decimal equivalent \( 0.4375 \), we need to round it to two decimal places.
1. **Identify the Third Decimal Place**:
- The first two decimal places are 43 (from 0.43).
- The third decimal place is 7 (from 0.4375).
2. **Apply Rounding Rules**:
- According to rounding rules, if the digit in the third decimal place (7) is 5 or greater, we round up the second decimal place (3) by 1.
- Since 7 is greater than 5, we round up 3 to 4.
Thus, rounding \( 0.4375 \) to two decimal places gives us:
\[
0.44
\]
### Conclusion: Correct Option
The correct option is **B. 0.44**.
### Explanation of Other Options
- **A. 0.43**: This option is incorrect because it does not account for the rounding of the second decimal place. The correct rounding leads to 0.44, not 0.43.
- **C. 0.45**: This option is incorrect as it suggests rounding up too much. The correct rounding from 0.4375 is to 0.44, not 0.45.
- **D. 0.46**: This option is also incorrect. It implies an even higher rounding than necessary. The correct rounding from 0.4375 is to 0.44.
### Revision Summary
- To convert a fraction to a decimal, divide the numerator by the denominator.
- Round the decimal to the desired number of decimal places by checking the next digit.
- If the next digit is 5 or greater, round up the last retained digit.
- The decimal equivalent of \( \frac{7}{16} \) rounded to two decimal places is 0.44.