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Sheila wants to test the reasonableness of her answer to the expression below by using compatible numbers, - 8 + 19 + 8 Which e...Question
Sheila wants to test the reasonableness of her answer to the expression below by using compatible numbers.
Negative 8 + 19 + 8
Which equation would help Sheila do this?
10 + 20 + 10
–10 – 20 + 8
–10 + 20 + 10
10 + 20 – 8
Negative 8 + 19 + 8
Which equation would help Sheila do this?
10 + 20 + 10
–10 – 20 + 8
–10 + 20 + 10
10 + 20 – 8
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Answered by
GPT-4o mini
To test the reasonableness of the expression \(-8 + 19 + 8\) using compatible numbers, Sheila should aim to use numbers that are easy to work with but close to the original numbers.
Looking at the given options, we want to find a set of numbers that is close to \(-8\), \(19\), and \(8\).
The expression can be simplified as follows:
1. \(-8\) can be rounded to \(-10\).
2. \(19\) can be rounded to \(20\).
3. \(8\) can be rounded to \(10\).
So a compatible number equation would be:
\(-10 + 20 + 10\)
This helps Sheila estimate the result.
Therefore, the correct choice is:
**–10 + 20 + 10**
Looking at the given options, we want to find a set of numbers that is close to \(-8\), \(19\), and \(8\).
The expression can be simplified as follows:
1. \(-8\) can be rounded to \(-10\).
2. \(19\) can be rounded to \(20\).
3. \(8\) can be rounded to \(10\).
So a compatible number equation would be:
\(-10 + 20 + 10\)
This helps Sheila estimate the result.
Therefore, the correct choice is:
**–10 + 20 + 10**
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