Question

Math Practice U2-L5
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Function of the Day:
Approximate the following square roots to the first decimal place and place them on the numberline.


2
10
25
-16
42
-101



















What do you know?

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Answers

GPT-4o mini
To approximate the square roots of the given numbers to the first decimal place and place them on a number line, we need to follow these steps:

1. Identify the number to find the square root of.
2. Determine if the number is a perfect square or not.
3. Approximate the square root and round it to the first decimal place.
4. If the number is negative, note that the square root is not a real number (for purposes of this activity).

Let's go through the given numbers one by one:

1. **Square root of 2**:
- Approximation: \(\sqrt{2} \approx 1.4\)

2. **Square root of 10**:
- Approximation: \(\sqrt{10} \approx 3.2\)

3. **Square root of 25**:
- Approximation: \(\sqrt{25} = 5.0\) (exact)

4. **Square root of -16**:
- Note: The square root of a negative number is not a real number. It is \(4i\) in the context of complex numbers.

5. **Square root of 42**:
- Approximation: \(\sqrt{42} \approx 6.5\)

6. **Square root of -101**:
- Note: The square root of a negative number, in this case, is not a real number. It is approximately \(10.05i\) in the context of complex numbers.

Now, let's list the approximate values we have found:

1. \(\sqrt{2} \approx 1.4\)
2. \(\sqrt{10} \approx 3.2\)
3. \(\sqrt{25} = 5.0\)
4. \(\sqrt{-16}\) is not a real number.
5. \(\sqrt{42} \approx 6.5\)
6. \(\sqrt{-101}\) is not a real number.

### What do you know?
1. The square root of a positive number has a positive value.
2. The square root of a perfect square is an integer.
3. The square root of negative numbers are not real and can be expressed in terms of imaginary numbers.
4. Approximations allow us to locate square roots of non-perfect squares on a number line.
5. The square roots found can be placed on the number line at their approximate locations.
6. The further from zero a number is, the larger its square root will generally be.
7. For positive real numbers, square roots always produce non-negative results.
8. The square roots of numbers less than 1 yield results between 0 and 1.
9. When estimating square roots, knowing perfect squares can help estimate values more accurately.

If you need further assistance creating a number line or have any other questions, feel free to ask!

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