Problem Description:
The task is to solve the subtraction problem \( 403 - 186 \) and identify the correct answer from the given options.
Given Options:
- 217
- 216
- 218
- 117
Solution:
#### Step 1: Perform the Subtraction
We need to calculate \( 403 - 186 \).
1.
Align the numbers by place value:
```
403
- 186
```
2.
Subtract digit by digit from right to left:
-
Units place:
\[
3 - 6
\]
Since 3 is less than 6, we need to borrow 1 from the tens place. After borrowing, the units place becomes \( 13 - 6 = 7 \).
-
Tens place:
After borrowing, the tens place in 403 becomes \( 0 - 1 = -1 \). We need to borrow again from the hundreds place. After borrowing, the tens place becomes \( 10 - 8 = 2 \).
-
Hundreds place:
After borrowing, the hundreds place in 403 becomes \( 3 - 1 = 2 \).
3.
Combine the results:
\[
403 - 186 = 217
\]
#### Step 2: Verify the Answer
To ensure accuracy, let's verify by adding \( 186 \) back to \( 217 \):
\[
217 + 186 = 403
\]
This confirms that the subtraction is correct.
#### Step 3: Match the Answer with the Options
The calculated result is \( 217 \), which matches one of the given options.
Final Answer:
\[
\boxed{217}
\]
Parent Tip: Review the logic above to help your child master the concept of interactive 3 digit subtraction.
