Math worksheet with decimal operations and a riddle.

Let's solve this step-by-step.

This worksheet is titled "Night at the Classroom" and involves adding and subtracting decimals to the hundredths place. Each problem has a letter next to it, and after solving, we use the answers to decode a riddle:
> "What did one math book say to the other?"

We'll solve each problem, match the answer to the correct letter, and then fill in the blanks below with the corresponding letters.

---

Step 1: Solve each decimal problem

1. 5.78 + 0.16 = 5.94 → H
2. 0.57 + 1.92 = 2.49 → E
3. 5.46 - 2.37 = 3.09 → O
4. 11.97 - 9.70 = 2.27 → O
5. 1.73 - 1.56 = 0.17 → Y
6. 8.01 + 0.97 = 8.98 → G
7. 15.76 + 38.65 = 54.41 → O
8. 0.29 + 7.83 = 8.12 → L
9. 11.06 - 5.33 = 5.73 → T
10. 25 - 8.14 = 16.86 → M
11. 7.38 - 4.57 = 2.81 → S
12. 18.06 + 10.92 = 28.98 → E
13. 7.05 + 0.85 = 7.90 → R
14. 3.82 + 0.17 = 3.99 → W
15. 6.27 - 1.49 = 4.78 → E
16. 0.72 - 0.53 = 0.19 → A
17. 6.56 + 2.31 + 0.45 = 9.32 → B
18. 8 - 3.21 = 4.79 → B
19. 8.24 - 3.65 = 4.59 → P
20. 0.64 + 5.92 + 19.36 = 25.92 → V

Now let’s list the answers with their letters:

| Problem | Answer | Letter |
|--------|--------|--------|
| 1 | 5.94 | H |
| 2 | 2.49 | E |
| 3 | 3.09 | O |
| 4 | 2.27 | O |
| 5 | 0.17 | Y |
| 6 | 8.98 | G |
| 7 | 54.41 | O |
| 8 | 8.12 | L |
| 9 | 5.73 | T |
| 10 | 16.86 | M |
| 11 | 2.81 | S |
| 12 | 28.98 | E |
| 13 | 7.90 | R |
| 14 | 3.99 | W |
| 15 | 4.78 | E |
| 16 | 0.19 | A |
| 17 | 9.32 | B |
| 18 | 4.79 | B |
| 19 | 4.59 | P |
| 20 | 25.92 | V |

---

Step 2: Match the answers to the numbered lines below

The bottom section says:
> To solve the riddle, write each letter from above on its matching numbered line below.

Below are the numbers (answers) arranged in rows. We need to find which answer corresponds to which problem number, and then write the letter in that position.

Let’s look at the blank lines:

```
4.79 54.41 0.17 5.94 0.19 25.92 28.98 3.99 2.49
8.98 3.09 5.73 4.59 7.9 2.27 9.32 8.12 4.78 16.86 2.81
```

Now, assign the letters based on the problem number and answer:

We’ll go through each problem number and match the answer to the correct line.

But instead, let’s reverse-engineer: for each numbered blank, find which problem had that answer.

Let’s map the answers to their problem numbers and letters:

- 4.79 → Problem 18 → B
- 54.41 → Problem 7 → O
- 0.17 → Problem 5 → Y
- 5.94 → Problem 1 → H
- 0.19 → Problem 16 → A
- 25.92 → Problem 20 → V
- 28.98 → Problem 12 → E
- 3.99 → Problem 14 → W
- 2.49 → Problem 2 → E
- 8.98 → Problem 6 → G
- 3.09 → Problem 3 → O
- 5.73 → Problem 9 → T
- 4.59 → Problem 19 → P
- 7.9 → Problem 13 → R
- 2.27 → Problem 4 → O
- 9.32 → Problem 17 → B
- 8.12 → Problem 8 → L
- 4.78 → Problem 15 → E
- 16.86 → Problem 10 → M
- 2.81 → Problem 11 → S

Now, let’s fill in the blanks in order of the numbers listed.

First row:
1. 4.79 → B
2. 54.41 → O
3. 0.17 → Y
4. 5.94 → H
5. 0.19 → A
6. 25.92 → V
7. 28.98 → E
8. 3.99 → W
9. 2.49 → E

Second row:
10. 8.98 → G
11. 3.09 → O
12. 5.73 → T
13. 4.59 → P
14. 7.9 → R
15. 2.27 → O
16. 9.32 → B
17. 8.12 → L
18. 4.78 → E
19. 16.86 → M
20. 2.81 → S

So the full sequence of letters is:

B O Y H A V E W E G O T P R O B L E M S

Wait — that seems like:
BOY HAVE WE GOT PROBLEMS?

But let's check spacing.

Actually, the riddle is likely:
"I have a problem." or "I've got problems."

But looking at the sequence:

From the numbers:

1. B
2. O
3. Y
4. H
5. A
6. V
7. E
8. W
9. E
10. G
11. O
12. T
13. P
14. R
15. O
16. B
17. L
18. E
19. M
20. S

So putting them together:

B O Y H A V E W E G O T P R O B L E M S

That spells:
"BOY HAVE WE GOT PROBLEMS"

But that doesn't make sense as a riddle.

Wait — perhaps it's meant to be read as:

"I have a problem" — but no.

Wait — maybe the order is not by problem number, but by the numbered blanks.

But the instructions say:
> "write each letter from above on its matching numbered line below."

And the numbered lines correspond to the problem numbers.

But the numbers below are not in order.

Wait — let's re-express.

The problems are numbered 1–20.

The bottom has a list of answers, and we are to place the letter for each problem on the line with that answer.

But the way it's laid out:

There are two rows of numbers. The first row has 9 numbers, second has 11.

Let’s list them in order of appearance:

Row 1:
4.79 (18), 54.41 (7), 0.17 (5), 5.94 (1), 0.19 (16), 25.92 (20), 28.98 (12), 3.99 (14), 2.49 (2)

Row 2:
8.98 (6), 3.09 (3), 5.73 (9), 4.59 (19), 7.9 (13), 2.27 (4), 9.32 (17), 8.12 (8), 4.78 (15), 16.86 (10), 2.81 (11)

So now, if we write the letters in the order of the answers as they appear in the grid:

1. 4.79 → B
2. 54.41 → O
3. 0.17 → Y
4. 5.94 → H
5. 0.19 → A
6. 25.92 → V
7. 28.98 → E
8. 3.99 → W
9. 2.49 → E
10. 8.98 → G
11. 3.09 → O
12. 5.73 → T
13. 4.59 → P
14. 7.9 → R
15. 2.27 → O
16. 9.32 → B
17. 8.12 → L
18. 4.78 → E
19. 16.86 → M
20. 2.81 → S

So the final string is:

B O Y H A V E W E G O T P R O B L E M S

Which reads:
"BOY HAVE WE GOT PROBLEMS"

But that's not a joke.

Wait — perhaps it's supposed to be:
"I have a problem" — but no.

Wait — maybe the riddle is:
> What did one math book say to the other?
> "I have a problem!"

But our decoded message is "BOY HAVE WE GOT PROBLEMS" — which sounds like a common expression.

But maybe there's a typo.

Wait — look at Problem 17:
It's 6.56 + 2.31 + 0.45
= 6.56 + 2.31 = 8.87; 8.87 + 0.45 = 9.32 → B

Yes.

But wait — maybe the riddle is actually:

> "I'm having a problem."

But the answer should be: "I have a problem."

But our letters don’t spell that.

Wait — perhaps the order is different.

Another possibility: the numbered blanks are not in the order of the problems, but the answers are placed in order of appearance.

But the instruction says:
> "write each letter from above on its matching numbered line below."

Ah! That means:
For each problem number, find the answer, and then write the letter on the line labeled with that number.

But the lines below are not numbered — they are just blank lines with numbers.

Wait — look again:

Below the cartoon, there are two rows of numbers, and blank lines above them.

Each number corresponds to an answer, and we are to write the letter associated with that problem on the line above the number.

But the numbers are not in order.

So we must match each answer to its problem number, and then write the letter in the position where that answer appears.

So the sequence of letters is determined by the order of the answers in the grid.

So the final string is:

B O Y H A V E W E G O T P R O B L E M S

But that’s 20 letters.

Let’s try to group it:

- BOY HAVE WE GOT PROBLEMS

That’s a funny saying.

But the riddle is:
> What did one math book say to the other?

A common joke is:
> "I have a problem."

But here, it might be:
> "I’ve got problems."

But our answer is "BOY HAVE WE GOT PROBLEMS", which sounds like a pun.

Wait — perhaps it's "I have a problem", but we made a mistake.

Wait — look at Problem 1: 5.78 + 0.16 = 5.94 → H

Problem 2: 0.57 + 1.92 = 2.49 → E

Problem 3: 5.46 - 2.37 = 3.09 → O

Problem 4: 11.97 - 9.70 = 2.27 → O

Problem 5: 1.73 - 1.56 = 0.17 → Y

Problem 6: 8.01 + 0.97 = 8.98 → G

Problem 7: 15.76 + 38.65 = 54.41 → O

Problem 8: 0.29 + 7.83 = 8.12 → L

Problem 9: 11.06 - 5.33 = 5.73 → T

Problem 10: 25 - 8.14 = 16.86 → M

Problem 11: 7.38 - 4.57 = 2.81 → S

Problem 12: 18.06 + 10.92 = 28.98 → E

Problem 13: 7.05 + 0.85 = 7.90 → R

Problem 14: 3.82 + 0.17 = 3.99 → W

Problem 15: 6.27 - 1.49 = 4.78 → E

Problem 16: 0.72 - 0.53 = 0.19 → A

Problem 17: 6.56 + 2.31 + 0.45 = 9.32 → B

Problem 18: 8 - 3.21 = 4.79 → B

Problem 19: 8.24 - 3.65 = 4.59 → P

Problem 20: 0.64 + 5.92 + 19.36 = 25.92 → V

Now, the bottom has the following answers in order:

Row 1:
4.79 (18) → B
54.41 (7) → O
0.17 (5) → Y
5.94 (1) → H
0.19 (16) → A
25.92 (20) → V
28.98 (12) → E
3.99 (14) → W
2.49 (2) → E

Row 2:
8.98 (6) → G
3.09 (3) → O
5.73 (9) → T
4.59 (19) → P
7.9 (13) → R
2.27 (4) → O
9.32 (17) → B
8.12 (8) → L
4.78 (15) → E
16.86 (10) → M
2.81 (11) → S

So the full sequence of letters is:

B O Y H A V E W E G O T P R O B L E M S

Now, let’s see if this can be read as a phrase.

Try grouping:

- BOY – could be part of "BOY HAVE"
- HAVE – yes
- WE
- GOT
- PROBLEMS

So: "BOY HAVE WE GOT PROBLEMS"

That’s a humorous exaggeration.

But the riddle is:
> What did one math book say to the other?

Common joke:
> "I have a problem."

But here, it might be a play on words:
> "I've got problems." — but spelled out as "BOY HAVE WE GOT PROBLEMS"

But that’s not quite right.

Wait — perhaps the answer is:
> "I have a problem." — but our decoded message is different.

Wait — maybe I made a mistake in Problem 18.

Problem 18: 8 - 3.21 = 4.79 → B

Yes.

But perhaps the intended joke is:
> "I have a problem." — but the letters spell something else.

Alternatively, maybe the answer is:
> "I've got problems."

But our decoded message is "BOY HAVE WE GOT PROBLEMS" — which is close.

Perhaps it’s a pun:
> One math book says to another: "Boy, have we got problems!"

That makes sense.

So the riddle answer is:
> "Boy, have we got problems!"

Which matches our decoded message.

So the solution is:

Answer: Boy, have we got problems!

---

Final Answer:

After solving all the decimal problems and matching the letters to the answers, the decoded riddle is:

> "Boy, have we got problems!"

This is a humorous response to the question:
> "What did one math book say to the other?"

Because math books are full of problems, so one says to the other:
> "Boy, have we got problems!" — a pun on both the content of math books and the word "problems".

✔ Solved!