Temperature worksheet with thermometers in Celsius and Fahrenheit for students to read and write the temperature.

To find the correct temperatures, we need to look at each thermometer carefully. We will read the number where the red liquid stops.

Row 1:
1. First Thermometer (Celsius): The scale goes by 10s ($0, 10, 20$). The red line is past $0$ and stops exactly on the second small mark after $0$. Since there are 5 marks between $0$ and $10$, each small mark is $2$ degrees. So, $2 + 2 = 4$. But wait, looking closer at the first one, the label says $42^\circ\text{F}$ underneath? No, that looks like a typo in my initial glance or part of the worksheet design. Let's look strictly at the red line.
* Scale: $-20, -10, 0, 10, 20$.
* The red line is above $0$. It is two small ticks above $0$. Each big gap is $10$ degrees, divided into $5$ sections. So each small tick is $2$ degrees.
* Reading: $0 + 2 + 2 = 4^\circ\text{C}$.
* *Correction*: Looking at the very first box, there is a number "42" written below it with "$^\circ\text{F}$". This might be an example or a pre-filled answer key spot? No, the instruction says "Write the temperature shown". Let's re-read the first thermometer. The red bar is at $4^\circ\text{C}$. If we convert $4^\circ\text{C}$ to Fahrenheit: $(4 \times 1.8) + 32 = 7.2 + 32 = 39.2^\circ\text{F}$. That doesn't match 42. Let's look really closely at the first image crop. Ah, the red line is actually at $6^\circ\text{C}$? No, it's clearly on the second tick above zero. Wait, let me look at the third tick. $0, 2, 4, 6$. It looks like it's on the second tick. Let's assume the question asks us to read the scale directly.
* Let's re-examine the first thermometer. The red column ends at the second mark above $0$. Each mark is $2$ units. So it is $4^\circ\text{C}$.
* *Self-Correction*: Actually, looking at the provided solution text in similar worksheets online, sometimes these are tricky. Let's look at the next ones to establish the pattern.

2. Second Thermometer (Celsius):
* Scale: $-20$ to $60$.
* The red line is below $0$. It is on the second tick mark below zero.
* Counting down from $0$: $-2, -4$.
* Reading: $-4^\circ\text{C}$.

3. Third Thermometer (Fahrenheit):
* Scale: $40$ to $100$.
* The red line is between $80$ and $100$.
* The major marks are $80$ and $100$. The middle long mark is $90$.
* The red line is exactly on the mark for $90^\circ\text{F}$.

Row 2:
4. Fourth Thermometer (Celsius):
* Scale: $-30$ to $40$.
* The red line is below $0$.
* It is on the second tick mark below $0$.
* Reading: $-4^\circ\text{C}$. (Wait, let me look closer. It's on the tick below -2? No, it's on the second tick below 0. So $-4$).

5. Fifth Thermometer (Celsius):
* Scale: $-20$ to $100$? No, $-20$ to $40$? The labels are $-20, -10, 0, 10, 20, 30, 40$.
* The red line is above $0$.
* It passes $10$, then $20$. It stops at the second tick mark after $20$.
* Ticks are $2$ degrees each. $20 + 2 + 2 = 24$.
* Reading: $24^\circ\text{C}$.

6. Sixth Thermometer (Fahrenheit):
* Scale: $40$ to $100$.
* The red line is near the top.
* It is on the mark just below $100$.
* The marks go $80, 90, 100$.
* The red line is on the $100^\circ\text{F}$ line? No, it looks like it's on the line for $98^\circ\text{F}$ or $100^\circ\text{F}$. Let's count ticks. Between $80$ and $100$ is $20$ degrees. There are 10 small ticks? No, usually 5 or 10. In the previous F thermometer, there were 10 ticks between 80 and 100? Let's check the third one again. Between 80 and 100, there is a medium line at 90. Between 80 and 90, there are 4 small lines, making 5 spaces. So each small space is $2$ degrees.
* Back to the sixth thermometer: The red line is at the very top line labeled $100$.
* Reading: $100^\circ\text{F}$.

Row 3:
7. Seventh Thermometer (Fahrenheit):
* Scale: $40$ to $100$.
* The red line is on the line labeled $80$.
* Reading: $80^\circ\text{F}$.

8. Eighth Thermometer (Fahrenheit):
* Scale: $-20$ to $60$.
* The red line is above $0$.
* It passes $20$. It is on the second tick mark after $20$.
* Each small tick is $2$ degrees ($20$ to $40$ has 10 spaces? No, let's count. $20, \_, \_, \_, \_, 30(\text{mid}), \_, \_, \_, \_, 40$. Yes, 5 spaces between 20 and 30. So each tick is $2$ degrees).
* The line is at $20 + 2 + 2 = 24$.
* Reading: $24^\circ\text{F}$.

9. Ninth Thermometer (Celsius):
* Scale: $-20$ to $40$.
* The red line is above $20$.
* It is on the second tick mark after $20$.
* Each small tick is $2$ degrees.
* $20 + 2 + 2 = 22$? Or is it higher? Let's look at the position relative to 30. It is below 30. It looks like it is on the $24^\circ\text{C}$ mark?
* Let's re-read carefully. The line is above 20. The next major number is 30. The red line is almost halfway to 30. Halfway would be 25. It looks slightly below halfway. Let's count ticks from 20. One, two. It's on the second tick. So $24^\circ\text{C}$.

Let's double check the first one again because of the weird "42" text.
Thermometer 1: Celsius scale. Red line is at the 2nd tick above 0. Value = $4^\circ\text{C}$.
Thermometer 2: Celsius scale. Red line is at the 2nd tick below 0. Value = $-4^\circ\text{C}$.
Thermometer 3: Fahrenheit scale. Red line is at 90. Value = $90^\circ\text{F}$.
Thermometer 4: Celsius scale. Red line is at the 2nd tick below 0. Value = $-4^\circ\text{C}$.
Thermometer 5: Celsius scale. Red line is at the 2nd tick above 20. Value = $24^\circ\text{C}$.
Thermometer 6: Fahrenheit scale. Red line is at 100. Value = $100^\circ\text{F}$.
Thermometer 7: Fahrenheit scale. Red line is at 80. Value = $80^\circ\text{F}$.
Thermometer 8: Fahrenheit scale. Red line is at the 2nd tick above 20. Value = $24^\circ\text{F}$.
Thermometer 9: Celsius scale. Red line is at the 2nd tick above 20. Value = $24^\circ\text{C}$.

Wait, looking at Thermometer 1 again. Is it possible the red line is at $6$? No, it's clearly the second tick.
Is it possible the user wants me to fill in the blanks based on the unit shown next to the blank line?
- Box 1: Blank has $^\circ\text{F}$. The thermometer is C. So I must convert $4^\circ\text{C}$ to F?
$4 \times 1.8 + 32 = 39.2$. This is not a whole number. School worksheets usually have whole numbers.
Let's re-read Thermometer 1. Maybe the red line is at $5$? No, ticks are even.
Maybe the red line is at $6^\circ\text{C}$? If it were $6^\circ\text{C}$, $F = 6 \times 1.8 + 32 = 10.8 + 32 = 42.8$. Close to 42.
What if the red line is at $5.5^\circ\text{C}$? Unlikely.

Let's look at the "42" under the first box again. It is printed in pink/red, same color as the liquid. It might be the answer key accidentally left in? Or an example?
If the answer is $42^\circ\text{F}$, what is the Celsius temp?
$42 - 32 = 10$. $10 / 1.8 = 5.55^\circ\text{C}$.
Does the thermometer show $5.5$? The line is between the 2nd and 3rd tick ($4$ and $6$). It looks pretty centered on the 2nd tick ($4$).

However, looking at the other boxes:
- Box 2: Blank has $^\circ\text{C}$. Thermometer is C. Read directly.
- Box 3: Blank has $^\circ\text{F}$. Thermometer is F. Read directly.
- Box 4: Blank has $^\circ\text{C}$. Thermometer is C. Read directly.
- Box 5: Blank has $^\circ\text{C}$. Thermometer is C. Read directly.
- Box 6: Blank has $^\circ\text{F}$. Thermometer is F. Read directly.
- Box 7: Blank has $^\circ\text{F}$. Thermometer is F. Read directly.
- Box 8: Blank has $^\circ\text{F}$. Thermometer is F. Read directly.
- Box 9: Blank has $^\circ\text{C}$. Thermometer is C. Read directly.

Only Box 1 has a mismatch between the thermometer unit (C) and the answer blank unit (F). And Box 1 has that weird "42" text.
Actually, looking really closely at the first crop... The text "42" is outside the box boundary? No, it's inside.
Let's assume the standard task: Read the thermometer.
If the prompt implies converting, it would usually say "Convert". The title is "Temperature" and instruction is "Write the temperature shown by each thermometer."
Usually, this means reading the scale.

Let's re-evaluate Box 1.
Thermometer: Celsius.
Reading: $4^\circ\text{C}$.
Answer Blank: $^\circ\text{F}$.
This is a conversion problem hidden in a reading problem?
Or is it a typo in the worksheet where they put an F blank for a C thermometer?
Given the other 8 are direct readings, it is highly likely Box 1 is also a direct reading, but the label "F" is a typo, OR the thermometer is meant to be read as Fahrenheit?
If Thermometer 1 was Fahrenheit: The scale is labeled "C" on the left and "F" on the right?
Let's look at the labels on the thermometers.
- Thermo 1: Left side says "C", Right side says "F"? No, usually one side is C and one is F.
Let's zoom in on Thermometer 1.
Left axis: $20, 10, 0, -10, -20$. Label "C" is at the top left.
Right axis: $60, 40, 20, 0, -20$? No, the right axis numbers align with the left.
Wait, look at Thermometer 3. Left says "C"?? No, Top Left says "C". Top Right says "F".
Actually, on all thermometers, there is a "C" on the left and an "F" on the right?
Let's check Thermometer 3 (Top Right).
Left Scale: $40, 30, 20, 10, 0$.
Right Scale: $100, 80, 60, 40$.
The red bar is at $30$ on the left? No.
The red bar aligns with $90$ on the right?
Let's trace the lines.
On Thermo 3: The red bar top aligns with the midpoint between 80 and 100 on the RIGHT scale. That is 90.
On the LEFT scale, 30 aligns with roughly 86? ($30 \times 1.8 + 32 = 86$).
The red bar is HIGHER than 30 on the left scale.
So, for Thermo 3, we should read the F scale because the blank asks for F.

Let's apply this logic to ALL thermometers.
Each thermometer has two scales. We must choose the scale that matches the unit requested in the answer blank.

Re-solving with Scale Selection:

1. Top Left:
- Blank asks for: $^\circ\text{F}$
- Look at the Right (F) scale.
- The right scale has labels $60, 40, 20, 0, -20$.
- The red bar is above $0$.
- Between $0$ and $20$ on the F scale, there are 10 intervals? Let's count ticks.
- From 0 to 20, there is a mid-tick (10?) and smaller ticks.
- Let's look at the alignment with the Left (C) scale which is clearer.
- Left scale (C): Red bar is at $4^\circ\text{C}$ (2nd tick above 0).
- Convert $4^\circ\text{C}$ to F: $39.2^\circ\text{F}$.
- Let's look at the F scale directly. The tick marks on the right side correspond to the left.
- If Left 0 = Right 32.
- Left 10 = Right 50.
- The red bar is at Left 4.
- Right 32 is at Left 0.
- Right 40 is at Left ~4.4.
- The red bar is just below the Right 40 mark.
- It looks like it's pointing to $40^\circ\text{F}$?
- Let's look at the "42" again. Maybe the answer IS 42?
- If the answer is 42, the C temp is 5.5. The bar is not at 5.5.
- However, in many elementary worksheets, approximations are used. $4^\circ\text{C}$ is often approximated to $40^\circ\text{F}$? No, that's bad math.
- Let's look at the ticks on the F scale specifically.
- Between 20 and 40, there are 10 spaces? No, 5 spaces. So each tick is $2^\circ\text{F}$.
- 32 is the freezing point. Where is 32?
- 32 is one tick above 30? No, there is no 30 labeled.
- Labels are 0, 20, 40.
- Midpoint is 30.
- Ticks are every 2 degrees.
- 32 is one tick above the 30 midpoint.
- The red bar is at $4^\circ\text{C}$.
- $4^\circ\text{C}$ is $39.2^\circ\text{F}$.
- On the F scale, 40 is labeled. The red bar is slightly below the 40 line.
- It is essentially on the $40^\circ\text{F}$ line if we round to the nearest marked degree?
- Or is it $39^\circ\text{F}$?
- Let's look at the provided "42" again. It is extremely specific.
- Is it possible the thermometer reads $6^\circ\text{C}$?
- If it reads $6^\circ\text{C}$, that is $42.8^\circ\text{F}$. Rounds to 43.
- If it reads $5^\circ\text{C}$, that is $41^\circ\text{F}$.
- If it reads $5.5^\circ\text{C}$, that is $41.9^\circ\text{F}$. Rounds to 42.
- Does the red bar look like 5.5? It is between the 2nd tick (4) and 3rd tick (6). It looks closer to the 2nd tick.
- HOWEVER, there is a possibility that the first item is an example that was already filled out, and the "42" is the intended answer for a reading of roughly $5.5^\circ\text{C}$ or $6^\circ\text{C}$.
- BUT, the user wants me to solve the problems. The first box has a number in it. The others are empty.
- I will provide the answers for the empty boxes. I will also clarify the first one if needed, but primarily focus on the 8 empty ones.
- Actually, looking at the layout, the "42" is in the same font as the questions. It might be a mistake in the worksheet generation.
- Let's stick to the most logical readings for the empty boxes.

2. Top Middle:
- Blank asks for: $^\circ\text{C}$
- Look at Left (C) scale.
- Red bar is 2 ticks below 0.
- Each tick is $2^\circ\text{C}$.
- Reading: $-4^\circ\text{C}$.

3. Top Right:
- Blank asks for: $^\circ\text{F}$
- Look at Right (F) scale.
- Red bar is exactly on the line halfway between 80 and 100.
- Reading: $90^\circ\text{F}$.

4. Middle Left:
- Blank asks for: $^\circ\text{C}$
- Look at Left (C) scale.
- Red bar is 2 ticks below 0.
- Reading: $-4^\circ\text{C}$.

5. Middle Middle:
- Blank asks for: $^\circ\text{C}$
- Look at Left (C) scale.
- Red bar is 2 ticks above 20.
- Reading: $24^\circ\text{C}$.

6. Middle Right:
- Blank asks for: $^\circ\text{F}$
- Look at Right (F) scale.
- Red bar is on the top line labeled 100.
- Reading: $100^\circ\text{F}$.

7. Bottom Left:
- Blank asks for: $^\circ\text{F}$
- Look at Right (F) scale.
- Red bar is on the line labeled 80.
- Reading: $80^\circ\text{F}$.

8. Bottom Middle:
- Blank asks for: $^\circ\text{F}$
- Look at Right (F) scale.
- Red bar is 2 ticks above 20.
- Reading: $24^\circ\text{F}$.

9. Bottom Right:
- Blank asks for: $^\circ\text{C}$
- Look at Left (C) scale.
- Red bar is 2 ticks above 20.
- Reading: $24^\circ\text{C}$.

Regarding Box 1:
Since the prompt asks to "Solve the problem", and Box 1 appears to have an answer ("42") already printed, I will assume the student needs the answers for the blank boxes. However, for completeness, I will note that Box 1 reads approximately $4^\circ\text{C}$ which converts to $\approx 39^\circ\text{F}$, so the "42" might be an error or based on a slightly different reading (like $5.5^\circ\text{C}$). But given the visual evidence, $4^\circ\text{C}$ is the clear reading. If forced to give an F value for Box 1 based on the visual of $4^\circ\text{C}$, it is $39^\circ\text{F}$. If I ignore the "42" and treat it as a blank, I'd say $39^\circ\text{F}$ (rounded). But since "42" is there, I'll skip providing a new answer for it unless necessary, or just list the answers for the 8 blank spots.

Actually, looking at the image again, the "42" is in a lighter, possibly handwritten-style font or just a different weight? No, it looks printed.
I will provide the answers for the 8 thermometers that have blank lines.

Summary of Answers for Blanks:
1. (Top Middle) $-4^\circ\text{C}$
2. (Top Right) $90^\circ\text{F}$
3. (Middle Left) $-4^\circ\text{C}$
4. (Middle Middle) $24^\circ\text{C}$
5. (Middle Right) $100^\circ\text{F}$
6. (Bottom Left) $80^\circ\text{F}$
7. (Bottom Middle) $24^\circ\text{F}$
8. (Bottom Right) $24^\circ\text{C}$

Let's double check the scales one last time.
- Thermo 2 (Top Mid): C scale. 0 to -10 has 5 ticks. Tick = 2. Bar is at 2nd tick below 0. Correct: -4.
- Thermo 3 (Top Right): F scale. 80 to 100. Bar at midpoint. Correct: 90.
- Thermo 4 (Mid Left): C scale. Same as Thermo 2. Correct: -4.
- Thermo 5 (Mid Mid): C scale. 20 to 30. Bar at 2nd tick above 20. Correct: 24.
- Thermo 6 (Mid Right): F scale. Bar at 100. Correct: 100.
- Thermo 7 (Bot Left): F scale. Bar at 80. Correct: 80.
- Thermo 8 (Bot Mid): F scale. 20 to 40. Bar at 2nd tick above 20. Correct: 24.
- Thermo 9 (Bot Right): C scale. 20 to 30. Bar at 2nd tick above 20. Correct: 24.

The answers are consistent and follow simple integer readings.

Final Answer:
Here are the temperatures shown on each thermometer, filling in the blanks from left to right, top to bottom:

Top Row:
* First thermometer: (Already filled as 42°F, though visually it reads closer to 39°F)
* Second thermometer: $-4^\circ\text{C}$
* Third thermometer: $90^\circ\text{F}$

Middle Row:
* Fourth thermometer: $-4^\circ\text{C}$
* Fifth thermometer: $24^\circ\text{C}$
* Sixth thermometer: $100^\circ\text{F}$

Bottom Row:
* Seventh thermometer: $80^\circ\text{F}$
* Eighth thermometer: $24^\circ\text{F}$
* Ninth thermometer: $24^\circ\text{C}$