The Case of the Secret Igpay
Someone snuck into the Oinktown Cipher Academy and hid the golden dictionary! Use Pig Latin clues and math skills to track down the sneaky culprit before graduation.
Possible suspects
Cross off a row as each clue rules it out. On screen, tap a row.
| Name | Special Move | Secret Gadget | Observational Tell | Hair Style | Silly Weakness |
|---|---|---|---|---|---|
| Polly Porker | Consonant Flip | Decoder Ring | Wears Blue Scarf | Braided Brown Hair | Loud Pig Grunts |
| Penny Piglet | Consonant Flip | Golden Marker | Wears Red Scarf | Braided Brown Hair | Silly Rhymes |
| Sammy Swine | Vowel Shift | Golden Marker | Wears Red Scarf | Curly Pink Wig | Loud Pig Grunts |
| Hattie Hoof | Word Reverse | Piggy Badge | Wears Red Scarf | Spiky Silver Hair | Silly Rhymes |
| Sasha Sow | Vowel Shift | Secret Whistle | Wears Blue Scarf | Braided Brown Hair | Salty Snacks |
| Hogarth Snout | Vowel Shift | Piggy Badge | Wears Red Scarf | Braided Brown Hair | Loud Pig Grunts |
| Gabe Grunter | Vowel Shift | Piggy Badge | Wears Blue Scarf | Braided Brown Hair | Silly Rhymes |
| Chloe Curly | Syllable Swap | Secret Whistle | Wears Blue Scarf | Braided Brown Hair | Silly Rhymes |
| Wilbur Muddy | Consonant Flip | Piggy Badge | Wears Blue Scarf | Spiky Silver Hair | Salty Snacks |
| Barnaby Boar | Consonant Flip | Snout Compass | Wears Blue Scarf | Curly Pink Wig | Loud Pig Grunts |
| Pippa Pig | Syllable Swap | Golden Marker | Wears Blue Scarf | Curly Pink Wig | Loud Pig Grunts |
| Leo Letter | Syllable Swap | Decoder Ring | Wears Red Scarf | Curly Pink Wig | Loud Pig Grunts |
| Gideon Glaze | Consonant Flip | Snout Compass | Wears Blue Scarf | Curly Pink Wig | Silly Rhymes |
| Fiona Farm | Oink Blast | Piggy Badge | Wears Blue Scarf | Curly Pink Wig | Loud Pig Grunts |
| Petunia Pink | Syllable Swap | Secret Whistle | Wears Blue Scarf | Curly Pink Wig | Loud Pig Grunts |
| Bella Bacon | Word Reverse | Piggy Badge | Wears Blue Scarf | Curly Pink Wig | Loud Pig Grunts |
| Kobe Kerfuffle | Word Reverse | Piggy Badge | Wears Blue Scarf | Spiky Silver Hair | Salty Snacks |
| Bruno Oinker | Word Reverse | Golden Marker | Wears Red Scarf | Spiky Silver Hair | Salty Snacks |
| Jenny Jabber | Word Reverse | Piggy Badge | Wears Blue Scarf | Curly Pink Wig | Salty Snacks |
| Toby Trotter | Vowel Shift | Secret Whistle | Wears Red Scarf | Braided Brown Hair | Salty Snacks |
| Oinkly Oliver | Vowel Shift | Golden Marker | Wears Blue Scarf | Spiky Silver Hair | Salty Snacks |
Rounding
The digital cipher board only displays approximate numbers. Round the code counts to solve the first mystery!
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
Addition
We found secret notes scattered in two classrooms. Add all the word counts together to decode the next clue.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
Subtraction
The villain dropped a pouch of secret tokens. Subtract the missing ones from the total to find the clue.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
Multiplication facts (1-12)
The decoder rings are arranged in neat equal rows on the wall. Multiply to count them all up!
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
Division facts (1-12) — the last clue
The hog club members need to share the pig latin rulebooks equally. Divide the books into groups to get the final clue.
First solve each problem. Then find each answer in the list below and cross that sentence out. One sentence will be left — that's exactly what the villain did!
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Secret Igpay
- Clue 1 (Rounding): "THE SUSPECT DOES NOT HAVE A SECRET WHISTLE"Round 211 to the nearest hundred = 200 (T) · Round 660 to the nearest hundred = 700 (E) · Round 1,262 to the nearest hundred = 1300 (L) · Round 107 to the nearest ten = 110 (V) · Round 3,393 to the nearest thousand = 3000 (C) · Round 510 to the nearest hundred = 500 (W) · Round 370 to the nearest ten = 370 (P) · Round 131 to the nearest ten = 130 (R) · Round 89 to the nearest ten = 90 (H) · Round 4,329 to the nearest hundred = 4300 (D) · Round 2,305 to the nearest hundred = 2300 (A) · Round 3,723 to the nearest hundred = 3700 (U) · Round 301 to the nearest hundred = 300 (I) · Round 863 to the nearest hundred = 900 (N) · Round 1,962 to the nearest thousand = 2000 (S) · Round 1,104 to the nearest hundred = 1100 (O)
- Clue 2 (Addition): "WITNESS NOTICED A DARK BLUE SCARF"1854 + 2248 = 4102 (W) · 4270 + 3906 = 8176 (S) · 1749 + 3510 = 5259 (T) · 3835 + 3248 = 7083 (E) · 1735 + 1937 = 3672 (F) · 1237 + 1334 = 2571 (O) · 2349 + 2364 = 4713 (C) · 2761 + 1384 = 4145 (L) · 4426 + 3475 = 7901 (U) · 4062 + 4396 = 8458 (K) · 4076 + 3256 = 7332 (N) · 5471 + 2744 = 8215 (R) · 2997 + 5370 = 8367 (D) · 2848 + 5488 = 8336 (A) · 4214 + 2251 = 6465 (I) · 1151 + 1029 = 2180 (B)
- Clue 3 (Subtraction): "THE VILLAIN RAN AWAY FROM LOUD PIG GRUNTS"9446 - 1965 = 7481 (T) · 8798 - 1795 = 7003 (A) · 2131 - 501 = 1630 (W) · 10817 - 1941 = 8876 (V) · 6516 - 3780 = 2736 (O) · 5346 - 3759 = 1587 (R) · 5747 - 3583 = 2164 (G) · 5116 - 1201 = 3915 (F) · 8002 - 3380 = 4622 (I) · 4437 - 1352 = 3085 (Y) · 9379 - 1106 = 8273 (P) · 6151 - 3062 = 3089 (D) · 2425 - 92 = 2333 (M) · 7617 - 2296 = 5321 (N) · 6460 - 4391 = 2069 (U) · 4718 - 2957 = 1761 (H) · 10487 - 2521 = 7966 (E) · 7723 - 2624 = 5099 (S) · 4845 - 3517 = 1328 (L)
- Clue 4 (Multiplication facts (1-12)): "FOUND A LONG CURLY PINK WIG STRAND"12 × 7 = 84 (F) · 1 × 12 = 12 (P) · 11 × 11 = 121 (K) · 1 × 4 = 4 (I) · 10 × 6 = 60 (Y) · 7 × 8 = 56 (T) · 5 × 11 = 55 (U) · 8 × 8 = 64 (C) · 10 × 10 = 100 (A) · 9 × 10 = 90 (O) · 9 × 2 = 18 (N) · 1 × 3 = 3 (S) · 9 × 4 = 36 (D) · 12 × 12 = 144 (R) · 10 × 5 = 50 (G) · 5 × 8 = 40 (L) · 2 × 1 = 2 (W)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Fiona Farm12 ÷ 2 = 6 · 90 ÷ 9 = 10 · 25 ÷ 5 = 5 · 6 ÷ 3 = 2 · 21 ÷ 3 = 7 · 48 ÷ 6 = 8 · 44 ÷ 11 = 4 · 54 ÷ 6 = 9 · 10 ÷ 10 = 1 · 6 ÷ 2 = 3 · 121 ÷ 11 = 11
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Case of the Secret Igpay — set in Oinktown Cipher Academy
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects
