Halloween Codebreaker 1B: Multiplication Facts for the 2, 5, and 10 Times Tables

Let’s solve this Halloween Codebreaker 1B worksheet step by step.

---

🎃 Goal:

Use multiplication facts for the 2, 5, and 10 times tables to find the answer to the joke:
> “Why are ghosts no good at lying?”

We’ll calculate each multiplication fact, match the result to the letter in the code key, and fill in the blanks to reveal the punchline.

---

🔑 Code Key (Given at top):

| Letter | A | B | C | E | G | H | I | M | N | O | R | S | T | U | Y | - | ! |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number | 2 | 4 | 5 | 6 | 8 | 10|12 |14 |15 |16 |18 |20 |25 |30 |35 |40 |50 |

*(Note: Letters D, F, J, K, L, P, Q, V, W, X, Z are not used — only the ones listed above.)*

---

## ✏️ Step-by-step Solution:

We’ll go row by row, compute the multiplication fact, find the matching number in the key, then write the corresponding letter.

---

🔹 Row 1:

Fact → Letter
- `2x2 = 4` → B *(already given)*
- `3x2 = 6` → E
- `1x5 = 5` → C
- `2x1 = 2` → A
- `5x6 = 30` → U
- `10x2 = 20` → S
- `3x2 = 6` → E
- *(Gray box — skip)*
- `7x5 = 35` → Y
- `2x8 = 16` → O
- `10x3 = 30` → U

✔ So Row 1 letters:
B E C A U S E _ Y O U

---

🔹 Row 2:

- `5x1 = 5` → C
- `1x2 = 2` → A
- `3x5 = 15` → N
- *(Gray box — skip)*
- `4x5 = 20` → S
- `3x2 = 6` → E
- `2x3 = 6` → E
- *(Gray box — skip)*
- `9x2 = 18` → R
- `2x6 = 12` → I
- `4x10 = 40` → - *(dash)*

✔ Row 2 letters:
C A N _ S E E _ R I -

---

🔹 Row 3:

- `4x2 = 8` → G
- `2x5 = 10` → H
- `5x5 = 25` → T
- *(Gray box — skip)*
- `5x5 = 25` → T
- `5x2 = 10` → H
- `2x9 = 18` → R
- `8x2 = 16` → O
- `6x5 = 30` → U
- `4x2 = 8` → G
- `1x10 = 10` → H

✔ Row 3 letters:
G H T _ T H R O U G H

---

🔹 Row 4:

- `5x5 = 25` → T
- `2x5 = 10` → H
- `3x2 = 6` → E
- `2x7 = 14` → M
- `5x10 = 50` → !

✔ Row 4 letters:
T H E M !

---

## 🧩 Assemble the Answer:

Now put all the decoded letters together:

> B E C A U S E _ Y O U
> C A N _ S E E _ R I -
> G H T _ T H R O U G H
> T H E M !

Putting it all together:

> BECAUSE YOU CAN SEE RIGHT THROUGH THEM!

*(Note: The dash “-” is likely meant to be a space or part of “RIGHT” — since “R I -” becomes “RI-” which is part of “RIGHT”. Also, “GHT” + “THROUGH” = “RIGHT THROUGH”)*

So the full punchline is:

> Because you can see right through them!

---

## 💡 Why this joke works:
Ghosts are transparent or invisible — so you can literally “see right through them.” It’s a pun on being dishonest (“lying”) vs. being physically see-through!

---

## ✔ Final Answer:

> Because you can see right through them!

*(Write this in the “Answer” line at the bottom.)*

---

🎉 You’ve cracked the Halloween Codebreaker! Happy Halloween! 🎃👻