Use Negative Numbers in Context and Calculate Intervals Across Zero 2 - Reasoning

The mathematical reasoning exercise involves understanding and applying negative numbers in a real-life context, specifically dealing with financial transactions and debt. Rosie's financial situation is used as a basis for the problem. Initially, Rosie has a balance of -£8, indicating she is already in debt. She then spends an additional amount, which increases her debt to £15. Subsequently, Rosie spends a further £3, bringing her total spending to £10 and her debt to -£18. The exercise challenges students to identify the common digit between the amount spent (£10) and the new balance (-£18), which is the digit 1.

The problem continues with a series of true or false statements that require students to analyze Rosie's transactions and the resulting balance. Each statement proposes that Rosie's new balance after further spending contains the same digits as the amount she spent. In this context, the statements are designed to test the students' ability to perform calculations that cross zero and to understand the concept of negative numbers in a financial setting. The repeated true or false format reinforces the learning objective and encourages students to think critically about the relationship between spending, debt, and numerical representation.