Question

Pilar
1.36 − 0.85 = 1.5 + 0.36
= 1.86

Caleb
1.36 − 0.85 = 0.15 + 0.36
= 0.51

Answer 1

Let's carefully evaluate both Pilar's and Caleb's calculations for \(1.36 - 0.85\).

**Pilar's Calculation:**
1. Start with \(1.36 - 0.85\).
2. This simplifies to \(0.51\) (since \(1.36 - 0.85 = 0.51\)).
3. Pilar's next step, \(1.5 + 0.36\), is incorrect. Adding those together gives \(1.5 + 0.36 = 1.86\), which does not relate to the subtraction performed earlier.

So, Pilar's final answer of \(1.86\) is incorrect.

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**Caleb's Calculation:**
1. Again, start with \(1.36 - 0.85\).
2. This correctly simplifies to \(0.51\) (as we concluded before).
3. The next operation, \(0.15 + 0.36\), is not how Caleb should have approached it, but we can check if \(0.15 + 0.36\) gives the same result.

Calculating \(0.15 + 0.36\):
\[
0.15 + 0.36 = 0.51
\]

This means Caleb's calculation continues to be \(0.51\), which is indeed the correct result from the original subtraction.

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**Conclusion:**
- The correct answer for \(1.36 - 0.85\) is \(0.51\).
- Pilar’s answer of \(1.86\) is incorrect.
- Caleb's answer of \(0.51\) is correct.