🔎 HalloweenGrade 5Reading: grades 7-9Fractions of a numberWord problemsMultiplicationMulti-step word problems
The Gloomwood Gymnasium Ghoul
The Gloomwood High Halloween Dance was in full swing until someone sabotaged the main punch bowl with glowing green slime and locked the gymnasium doors. The Phantom Prankster is still hiding among the costumed guests. As the lead student detective, you must analyze the clues, solve the math mysteries, and unmask the culprit before the decorations melt away.
Suspects
Possible suspects
Cross off a row as each clue rules it out. On screen, tap a row.
21 of 21 still in play
| Name | Sabotage Skill | Spooky Costume Gear | Dominant Hand | Wig Color | Fear Factor |
|---|---|---|---|---|---|
| Morticia Addams | Stray fog machines | Skeleton mask | Right-handed | Pumpkin orange wig | Spooky ghost stories |
| Jason Voorhees | Releasing bat swarms | Witch broomstick | Right-handed | Midnight black wig | Spooky ghost stories |
| Raven Queen | Shorting the lights | Mechanical spider legs | Left-handed | Midnight black wig | Bright flashlights |
| Elvira Mistress | Stray fog machines | Mechanical spider legs | Left-handed | Slime green wig | Bright flashlights |
| Marnie Piper | Stray fog machines | Glow-in-the-dark cape | Left-handed | Slime green wig | Bright flashlights |
| Norman Bates | Stray fog machines | Witch broomstick | Left-handed | Slime green wig | Bright flashlights |
| Sally Ragdoll | Spilling fake blood | Skeleton mask | Left-handed | Slime green wig | Bright flashlights |
| Wednesday Addams | Haunting the speakers | Vampire fangs | Right-handed | Pumpkin orange wig | Loud pop music |
| Freddy Krueger | Haunting the speakers | Mechanical spider legs | Left-handed | Slime green wig | Spooky ghost stories |
| Samhain Jones | Spilling fake blood | Mechanical spider legs | Right-handed | Midnight black wig | Loud pop music |
| Jack Skellington | Haunting the speakers | Vampire fangs | Left-handed | Pumpkin orange wig | Bright flashlights |
| Casper Thorne | Spilling fake blood | Vampire fangs | Right-handed | Slime green wig | Spooky ghost stories |
| Laurie Strode | Stray fog machines | Witch broomstick | Left-handed | Midnight black wig | Bright flashlights |
| Carrie White | Haunting the speakers | Skeleton mask | Right-handed | Slime green wig | Bright flashlights |
| Herman Munster | Releasing bat swarms | Skeleton mask | Left-handed | Pumpkin orange wig | Spooky ghost stories |
| Lily Munster | Haunting the speakers | Skeleton mask | Right-handed | Pumpkin orange wig | Bright flashlights |
| Michael Myers | Releasing bat swarms | Vampire fangs | Right-handed | Midnight black wig | Bright flashlights |
| Buffy Summers | Haunting the speakers | Mechanical spider legs | Left-handed | Pumpkin orange wig | Spooky ghost stories |
| Gomez Addams | Spilling fake blood | Skeleton mask | Left-handed | Slime green wig | Loud pop music |
| Sabrina Spellman | Spilling fake blood | Vampire fangs | Left-handed | Slime green wig | Bright flashlights |
| Regan MacNeil | Releasing bat swarms | Vampire fangs | Left-handed | Slime green wig | Spooky ghost stories |
Clue 1
Fractions of a number
To unlock the first lockbox left by the prankster, we need to sort through the student council's inventory records. Solve these word problems to find the code.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
T
25
24
8
9
10
9
38
8
31
T
25
32
3
8
9
6
3
T
25
24
33
34
8
33
2
22
T
25
31
24
35
11
3
3
15
9
T
25
22
31
19
1/8 of 200 =T
2/4 of 64 =D
1/8 of 80 =U
5/10 of 30 =M
3/5 of 15 =S
1/2 of 62 =C
1/4 of 8 =W
1/4 of 32 =E
1/6 of 144 =H
6/8 of 44 =A
3/4 of 4 =O
1/5 of 55 =R
2/3 of 51 =V
2/4 of 12 =N
4/8 of 38 =K
1/5 of 175 =B
2/10 of 110 =I
2/3 of 57 =P
0/18 letters found
Clue 2
Word problems
The spooky punch recipe was tampered with. We found a notebook detailing fractions of the ingredients used, but some numbers are smudged. Figure out the fractional parts to reveal the secret ingredient.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
L
16
81
120
72
61
89
49
D
81
D
Chaperone lined up 2 rows of 8 mini pumpkins. How many mini pumpkins in all?L
There were 68 glow sticks. 19 were used up. How many glow sticks are left?N
There were 145 fake cobwebs. 25 were used up. How many fake cobwebs are left?F
There were 97 mini pumpkins. 36 were used up. How many mini pumpkins are left?H
Chaperone lined up 9 rows of 9 plastic fangs. How many plastic fangs in all?E
Chaperone lined up 6 rows of 12 plastic fangs. How many plastic fangs in all?T
Chaperone found 82 mini pumpkins yesterday and 7 more today. How many mini pumpkins in all?A
0/7 letters found
Clue 3
Multiplication facts (1-12)
The gym's row seating has been rearranged into mysterious grids. Multiplying the rows of chairs gives us the coordinate of the next evidence bag.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
T
77
25
49
84
27
4
6
49
63
49
144
6
25
49
108
121
120
7
56
25
120
8
14
25
T
77
56
56
25
8
108
49
144
11 × 7 =T
9 × 12 =N
10 × 12 =L
6 × 1 =W
12 × 7 =Y
5 × 5 =H
7 × 2 =G
7 × 7 =E
7 × 1 =A
7 × 8 =S
9 × 7 =R
11 × 11 =F
12 × 12 =D
4 × 2 =I
1 × 4 =O
9 × 3 =C
0/16 letters found
Clue 4
Multi-step word problems
We found a complex setup of ticket sales and candy purchases. Work through the multi-step records of the ticket booth to crack the combination lock on the stage door.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Astrandof hairturnedupatthescene.
S
86
33
37
24
64
46
76
64
64
N
W
37
46
Chaperone collected 221 glow sticks in the morning and 209 glow sticks in the afternoon, then split them equally among 5 Monster Squad. How many glow sticks did each get?S
Chaperone filled 9 boxes with 5 mini pumpkins each, then found 19 more mini pumpkins. How many mini pumpkins are there in all?E
There were 213 fake cobwebs in all. 1 Monster Squad used 15 fake cobwebs each. The other 6 Monster Squad shared the rest equally. How many fake cobwebs did each of the other Monster Squad get?L
There were 334 glow sticks in all. 2 Monster Squad used 15 glow sticks each. The other 4 Monster Squad shared the rest equally. How many glow sticks did each of the other Monster Squad get?R
Chaperone earned 3 fake cobwebs in each of 2 rounds, plus 48 bonus fake cobwebs. Then 8 fake cobwebs were lost. How many fake cobwebs are left?G
Chaperone collected 14 mini pumpkins in the morning and 82 mini pumpkins in the afternoon, then split them equally among 4 Monster Squad. How many mini pumpkins did each get?M
There were 147 plastic fangs in all. 36 plastic fangs were set aside. The rest were shared equally among 3 Monster Squad. How many plastic fangs did each get?I
0/7 letters found
Clue 5
Fractions of a number — the last clue
A trail of candy corn leads to the locker rooms, but only a fraction of the total trail remains. Calculate the remaining portions to pinpoint where the suspect fled.
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!
Step 1 — solve these
3/6 of 8 = ?
2/3 of 18 = ?
5/6 of 12 = ?
2/4 of 2 = ?
9/10 of 10 = ?
7/10 of 10 = ?
2/8 of 8 = ?
1/10 of 110 = ?
1/4 of 12 = ?
1/3 of 18 = ?
2/4 of 16 = ?
Step 2 — cross out the sentence with each answer
1.The villain shorted out the gymnasium lights, then showed off their sharp vampire fangs.
2.The villain shorted out the gymnasium lights, then flashed their glow-in-the-dark cape.
3.The villain released a swarm of rubber bats, then glares through a scary skeleton mask.
4.The villain spilled fake blood on the stage, then showed off their sharp vampire fangs.
5.The villain spilled fake blood on the stage, then glares through a scary skeleton mask.
6.The villain released a swarm of rubber bats, then swept away on a witch broomstick.
7.The villain turned the fog machines to maximum, then swept away on a witch broomstick.
8.The villain blared terrifying noises over the speakers, then clattered their mechanical spider legs.
9.The villain blared terrifying noises over the speakers, then glares through a scary skeleton mask.
10.The villain turned the fog machines to maximum, then clattered their mechanical spider legs.
11.The villain spilled fake blood on the stage, then clattered their mechanical spider legs.
12.The villain turned the fog machines to maximum, then flashed their glow-in-the-dark cape.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Gloomwood Gymnasium Ghoul
Culprit: Sally Ragdoll (Spilling fake blood · Skeleton mask · Left-handed · Slime green wig · Bright flashlights)
- Clue 1 (Fractions of a number): "THE SUSPECT DOES NOT HAVE A WITCH BROOMSTICK"1/8 of 200 = 25 (T) · 2/4 of 64 = 32 (D) · 1/8 of 80 = 10 (U) · 5/10 of 30 = 15 (M) · 3/5 of 15 = 9 (S) · 1/2 of 62 = 31 (C) · 1/4 of 8 = 2 (W) · 1/4 of 32 = 8 (E) · 1/6 of 144 = 24 (H) · 6/8 of 44 = 33 (A) · 3/4 of 4 = 3 (O) · 1/5 of 55 = 11 (R) · 2/3 of 51 = 34 (V) · 2/4 of 12 = 6 (N) · 4/8 of 38 = 19 (K) · 1/5 of 175 = 35 (B) · 2/10 of 110 = 22 (I) · 2/3 of 57 = 38 (P)
- Clue 2 (Word problems): "LEFT HANDED"Chaperone lined up 2 rows of 8 mini pumpkins. How many mini pumpkins in all? = 16 (L) · There were 68 glow sticks. 19 were used up. How many glow sticks are left? = 49 (N) · There were 145 fake cobwebs. 25 were used up. How many fake cobwebs are left? = 120 (F) · There were 97 mini pumpkins. 36 were used up. How many mini pumpkins are left? = 61 (H) · Chaperone lined up 9 rows of 9 plastic fangs. How many plastic fangs in all? = 81 (E) · Chaperone lined up 6 rows of 12 plastic fangs. How many plastic fangs in all? = 72 (T) · Chaperone found 82 mini pumpkins yesterday and 7 more today. How many mini pumpkins in all? = 89 (A)
- Clue 3 (Multiplication facts (1-12)): "THEY COWERED WHEN FLASHLIGHTS SHINED"11 × 7 = 77 (T) · 9 × 12 = 108 (N) · 10 × 12 = 120 (L) · 6 × 1 = 6 (W) · 12 × 7 = 84 (Y) · 5 × 5 = 25 (H) · 7 × 2 = 14 (G) · 7 × 7 = 49 (E) · 7 × 1 = 7 (A) · 7 × 8 = 56 (S) · 9 × 7 = 63 (R) · 11 × 11 = 121 (F) · 12 × 12 = 144 (D) · 4 × 2 = 8 (I) · 1 × 4 = 4 (O) · 9 × 3 = 27 (C)
- Clue 4 (Multi-step word problems): "SLIME GREEN WIG"Chaperone collected 221 glow sticks in the morning and 209 glow sticks in the afternoon, then split them equally among 5 Monster Squad. How many glow sticks did each get? = 86 (S) · Chaperone filled 9 boxes with 5 mini pumpkins each, then found 19 more mini pumpkins. How many mini pumpkins are there in all? = 64 (E) · There were 213 fake cobwebs in all. 1 Monster Squad used 15 fake cobwebs each. The other 6 Monster Squad shared the rest equally. How many fake cobwebs did each of the other Monster Squad get? = 33 (L) · There were 334 glow sticks in all. 2 Monster Squad used 15 glow sticks each. The other 4 Monster Squad shared the rest equally. How many glow sticks did each of the other Monster Squad get? = 76 (R) · Chaperone earned 3 fake cobwebs in each of 2 rounds, plus 48 bonus fake cobwebs. Then 8 fake cobwebs were lost. How many fake cobwebs are left? = 46 (G) · Chaperone collected 14 mini pumpkins in the morning and 82 mini pumpkins in the afternoon, then split them equally among 4 Monster Squad. How many mini pumpkins did each get? = 24 (M) · There were 147 plastic fangs in all. 36 plastic fangs were set aside. The rest were shared equally among 3 Monster Squad. How many plastic fangs did each get? = 37 (I)
- Clue 5 (Fractions of a number): surviving statement (box 5) → Sally Ragdoll3/6 of 8 = 4 · 2/3 of 18 = 12 · 5/6 of 12 = 10 · 2/4 of 2 = 1 · 9/10 of 10 = 9 · 7/10 of 10 = 7 · 2/8 of 8 = 2 · 1/10 of 110 = 11 · 1/4 of 12 = 3 · 1/3 of 18 = 6 · 2/4 of 16 = 8
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Fractions of a number, Word problems, Multiplication, Multi-step word problems
- Reading level
- grades 7-9
- Theme
- The Gloomwood Gymnasium Ghoul — set in Gloomwood High School during the annual Halloween Dance
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects