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\begin{tabular}{|l|l|l|}\hline \( 45,541-25,865 \) \\ -\begin{tabular}{lllll}2 & 5 & 8 & 6 & 5 \\ 4 & 5 & 5 & 4 & 1 \\ 2 & 0 & 3 & 2 & 4 \\ \hline\end{tabular} \\ Rosie's workings \\ Explain the mistakes that Rosie \end{tabular}

Ask by Fernandez Barnett. in the United Kingdom
Mar 09,2025

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Tutor-Verified Answer

Answer

Rosie made mistakes in borrowing and aligning the digits, leading to an incorrect final answer of 19,676.

Solution

To analyze Rosie's workings and identify any mistakes, we first need to perform the subtraction \( 45,541 - 25,865 \) step by step. ### Step 1: Perform the Subtraction Let's break down the subtraction: ``` 45,541 - 25,865 __________ ``` ### Step 2: Subtract Digit by Digit 1. **Units Place**: \( 1 - 5 \) - We cannot subtract 5 from 1, so we need to borrow 1 from the tens place. - The 4 in the tens place becomes 3, and the 1 becomes 11. - Now, \( 11 - 5 = 6 \). 2. **Tens Place**: \( 3 - 6 \) - Again, we cannot subtract 6 from 3, so we need to borrow 1 from the hundreds place. - The 5 in the hundreds place becomes 4, and the 3 becomes 13. - Now, \( 13 - 6 = 7 \). 3. **Hundreds Place**: \( 4 - 8 \) - We cannot subtract 8 from 4, so we need to borrow 1 from the thousands place. - The 5 in the thousands place becomes 4, and the 4 becomes 14. - Now, \( 14 - 8 = 6 \). 4. **Thousands Place**: \( 4 - 5 \) - We cannot subtract 5 from 4, so we need to borrow 1 from the ten-thousands place. - The 4 in the ten-thousands place becomes 3, and the 4 becomes 14. - Now, \( 14 - 5 = 9 \). 5. **Ten-Thousands Place**: \( 3 - 2 = 1 \). ### Step 3: Combine the Results Putting it all together, we have: ``` 45,541 - 25,865 __________ 19,676 ``` ### Step 4: Analyze Rosie's Workings Now, let's analyze the table provided in Rosie's workings: ``` 2 & 5 & 8 & 6 & 5 4 & 5 & 5 & 4 & 1 2 & 0 & 3 & 2 & 4 ``` This table does not seem to correspond to the subtraction process we just performed. It appears to be a collection of numbers that do not relate to the subtraction of \( 45,541 - 25,865 \). ### Mistakes Identified 1. **Incorrect Borrowing**: If Rosie attempted to borrow incorrectly, it could lead to wrong digits in the final answer. 2. **Misalignment of Numbers**: The numbers in the table do not represent the digits involved in the subtraction, indicating a misunderstanding of the subtraction process. 3. **Final Result**: If Rosie arrived at a different final result, it would be due to the above mistakes. ### Conclusion Rosie's workings do not reflect the correct process for subtracting \( 45,541 - 25,865 \). The correct answer is \( 19,676 \), and the mistakes likely stem from incorrect borrowing and misalignment of the digits.

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Mind Expander

Rosie's workings reveal a few common pitfalls in subtraction that many encounter. One potential mistake is not borrowing correctly when the top digit is smaller than the bottom digit in a column. For example, if Rosie attempted to subtract in the units column and mistakenly took from the tens instead of borrowing correctly, this would lead to inaccuracies. Keeping track of where you borrow from and adjusting all relevant columns is vital to ensure a precise result. Additionally, another common error could be a simple miscalculation when carrying out the subtraction step by step. Distracted by the numbers, it’s easy to overlook a column or misread a figure, especially under the pressure of a larger calculation. Verifying each column separately before moving on can help catch these little blunders before they snowball into a bigger mistake!

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