🔎 HalloweenGrade 7Reading: grades 5-6IntegersPercentagesOrder of operationsExponentsTwo-step equations
The Mystery of the Haunted Harvest
During the annual Raven Hollow Halloween Festival, a masked culprit crashed the party and stole the Golden Pumpkin Trophy. Gather clues around the spooky carnival grounds to catch the guilty suspect.
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 | Main Power | Secondary Trick | Dominant Hand | Hair Color | Weakness |
|---|---|---|---|---|---|
| Piper Pumpkin | Pumpkin Blast | Skeleton Dance | Right Handed | Orange Hair | Silver Bell |
| Felix Fang | Ghost Phase | Lantern Flare | Right Handed | Silver Hair | Garlic Spray |
| Baron Von Boo | Ghost Phase | Lantern Flare | Right Handed | Orange Hair | Silver Bell |
| Willa Web | Willow Whammy | Lantern Flare | Left Handed | Silver Hair | Garlic Spray |
| Rory Raven | Shadow Stride | Tomb Shake | Left Handed | Silver Hair | Garlic Spray |
| Gabe Ghoul | Pumpkin Blast | Lantern Flare | Left Handed | Orange Hair | Glow Stick |
| Nora Night | Shadow Stride | Skeleton Dance | Left Handed | Orange Hair | Garlic Spray |
| Kendra Kraven | Bat Swarm | Skeleton Dance | Right Handed | Black Hair | Garlic Spray |
| Otto Owl | Shadow Stride | Candy Theft | Left Handed | Orange Hair | Silver Bell |
| Countess Clara | Ghost Phase | Lantern Flare | Right Handed | Black Hair | Silver Bell |
| Luna Lantern | Pumpkin Blast | Fog Web | Right Handed | Orange Hair | Silver Bell |
| Quinn Quartz | Ghost Phase | Lantern Flare | Right Handed | Orange Hair | Glow Stick |
| Xander Xray | Ghost Phase | Lantern Flare | Right Handed | Silver Hair | Glow Stick |
| Milo Mummy | Bat Swarm | Skeleton Dance | Right Handed | Orange Hair | Garlic Spray |
| Igor Ink | Willow Whammy | Lantern Flare | Left Handed | Orange Hair | Garlic Spray |
| Toby Tomb | Willow Whammy | Candy Theft | Right Handed | Silver Hair | Garlic Spray |
| Vera Vamp | Pumpkin Blast | Skeleton Dance | Left Handed | Silver Hair | Garlic Spray |
| Jasper Jack | Bat Swarm | Lantern Flare | Right Handed | Orange Hair | Silver Bell |
| Stella Spook | Willow Whammy | Lantern Flare | Right Handed | Silver Hair | Silver Bell |
| Hester Hex | Willow Whammy | Candy Theft | Right Handed | Orange Hair | Silver Bell |
| Zane Zombie | Willow Whammy | Tomb Shake | Left Handed | Black Hair | Silver Bell |
Clue 1
Integers
You check the dungeon temperature monitor, tracking drops below zero as icy footprints lead down the hall.
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
30
25
2
3
19
9
9
28
19
1
16
12
2
29
1
12
T
30
18
29
2
8
12
7
23
2
13
(-15) + 45 =T
6 - (-13) =I
(-3) + 28 =H
(-11) + 24 =B
27 - (-1) =A
15 - (-3) =U
5 - (-2) =G
(-7) + 36 =S
(-11) + 19 =F
(-7) + 10 =V
(-7) + 23 =D
(-13) + 15 =E
(-10) + 11 =N
9 - (-14) =W
(-10) + 19 =L
10 - (-2) =O
0/16 letters found
Clue 2
Percentages
You inspect the trick or treat tally board to calculate what percentage of candy was snatched from the table.
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
27
13
42
14
5
14
36
42
60
T
27
31
57
14
1
43
16
13
T
27
13
57
3
19
42
19
60% of 45 =T
20% of 155 =W
5% of 280 =S
25% of 4 =R
20% of 180 =P
25% of 20 =U
10% of 190 =D
10% of 130 =H
10% of 160 =G
75% of 4 =N
75% of 80 =C
5% of 840 =E
20% of 215 =I
25% of 228 =A
0/14 letters found
Clue 3
Order of operations
You decode a spooky recipe scroll, following the strict order of operations to open the crypt lock.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
A
10
37
80
99
50
91
58
84
91
99
99
58
80
71
54
37
94
A
10
58
91
70
26
119
91
50
80
99
99
A
10
80
71
A
10
77
A
10
12
11 × 2 - 12 =A
44 + 2 × 3 =V
8 × 12 - 5 =E
73 + 3 × 7 =C
11 × 11 - 22 =L
8 × 11 - 11 =W
23 + 7 × 5 =R
5 × 7 - 9 =T
8 × 10 - 9 =N
28 + 7 × 8 =B
52 + 2 × 9 =D
5 × 11 - 18 =S
83 + 6 × 6 =H
5 × 5 - 13 =Y
68 + 3 × 4 =I
10 × 8 - 26 =G
0/16 letters found
Clue 4
Exponents
You observe supernatural ghost spores multiplying exponentially across the haunted clock tower walls.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
O
64
49
9
144
400
196
225
100
49
9
144
324
225
169
196
49
196
343
O
64
289
144
324
144
196
9
49
100
36
196
32
9
144
324
121
4^3 =O
14^2 =E
15^2 =S
12^2 =N
13^2 =W
3^2 =A
6^2 =H
7^3 =F
7^2 =R
18^2 =D
20^2 =G
11^2 =Y
10^2 =T
2^5 =C
17^2 =U
0/15 letters found
Clue 5
Two-step equations — the last clue
You balance the booth budget equation to figure out how many glow sticks were bought after paying the entrance fee.
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
6x + 2 = 44, x = ?
4x + 12 = 28, x = ?
6x + 1 = 19, x = ?
6x + 5 = 11, x = ?
4x + 8 = 48, x = ?
6x + 4 = 52, x = ?
5x + 10 = 20, x = ?
5x + 6 = 31, x = ?
5x + 9 = 64, x = ?
5x + 4 = 34, x = ?
5x + 10 = 70, x = ?
Step 2 — cross out the sentence with each answer
1.The villain blasted pumpkin goo across the hall, then ignited a spooky lantern flare.
2.The villain phased right through the heavy oak door, then shook the heavy stone tomb doors.
3.The villain blasted pumpkin goo across the hall, then made the skeleton decorations dance.
4.The villain cast a creepy willow whammy, then snatched the grand prize candy bucket.
5.The villain summoned a fluttering bat swarm, then shook the heavy stone tomb doors.
6.The villain blasted pumpkin goo across the hall, then trapped the guard in a sticky fog web.
7.The villain phased right through the heavy oak door, then ignited a spooky lantern flare.
8.The villain slid through the shadows silently, then ignited a spooky lantern flare.
9.The villain summoned a fluttering bat swarm, then ignited a spooky lantern flare.
10.The villain phased right through the heavy oak door, then snatched the grand prize candy bucket.
11.The villain phased right through the heavy oak door, then trapped the guard in a sticky fog web.
12.The villain slid through the shadows silently, then trapped the guard in a sticky fog web.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Haunted Harvest
Culprit: Jasper Jack (Bat Swarm · Lantern Flare · Right Handed · Orange Hair · Silver Bell)
- Clue 1 (Integers): "THE VILLAIN DOES NOT USE FOG WEB"(-15) + 45 = 30 (T) · 6 - (-13) = 19 (I) · (-3) + 28 = 25 (H) · (-11) + 24 = 13 (B) · 27 - (-1) = 28 (A) · 15 - (-3) = 18 (U) · 5 - (-2) = 7 (G) · (-7) + 36 = 29 (S) · (-11) + 19 = 8 (F) · (-7) + 10 = 3 (V) · (-7) + 23 = 16 (D) · (-13) + 15 = 2 (E) · (-10) + 11 = 1 (N) · 9 - (-14) = 23 (W) · (-10) + 19 = 9 (L) · 10 - (-2) = 12 (O)
- Clue 2 (Percentages): "THE SUSPECT WAS RIGHT HANDED"60% of 45 = 27 (T) · 20% of 155 = 31 (W) · 5% of 280 = 14 (S) · 25% of 4 = 1 (R) · 20% of 180 = 36 (P) · 25% of 20 = 5 (U) · 10% of 190 = 19 (D) · 10% of 130 = 13 (H) · 10% of 160 = 16 (G) · 75% of 4 = 3 (N) · 75% of 80 = 60 (C) · 5% of 840 = 42 (E) · 20% of 215 = 43 (I) · 25% of 228 = 57 (A)
- Clue 3 (Order of operations): "A SILVER BELL RING SCARED THE VILLAIN AWAY"11 × 2 - 12 = 10 (A) · 44 + 2 × 3 = 50 (V) · 8 × 12 - 5 = 91 (E) · 73 + 3 × 7 = 94 (C) · 11 × 11 - 22 = 99 (L) · 8 × 11 - 11 = 77 (W) · 23 + 7 × 5 = 58 (R) · 5 × 7 - 9 = 26 (T) · 8 × 10 - 9 = 71 (N) · 28 + 7 × 8 = 84 (B) · 52 + 2 × 9 = 70 (D) · 5 × 11 - 18 = 37 (S) · 83 + 6 × 6 = 119 (H) · 5 × 5 - 13 = 12 (Y) · 68 + 3 × 4 = 80 (I) · 10 × 8 - 26 = 54 (G)
- Clue 4 (Exponents): "ORANGE STRANDS WERE FOUND NEAR THE CANDY"4^3 = 64 (O) · 14^2 = 196 (E) · 15^2 = 225 (S) · 12^2 = 144 (N) · 13^2 = 169 (W) · 3^2 = 9 (A) · 6^2 = 36 (H) · 7^3 = 343 (F) · 7^2 = 49 (R) · 18^2 = 324 (D) · 20^2 = 400 (G) · 11^2 = 121 (Y) · 10^2 = 100 (T) · 2^5 = 32 (C) · 17^2 = 289 (U)
- Clue 5 (Two-step equations): surviving statement (box 9) → Jasper Jack6x + 2 = 44, x = 7 · 4x + 12 = 28, x = 4 · 6x + 1 = 19, x = 3 · 6x + 5 = 11, x = 1 · 4x + 8 = 48, x = 10 · 6x + 4 = 52, x = 8 · 5x + 10 = 20, x = 2 · 5x + 6 = 31, x = 5 · 5x + 9 = 64, x = 11 · 5x + 4 = 34, x = 6 · 5x + 10 = 70, x = 12
About this mystery
- Grade level
- Grade 7 math
- Math topics
- Integers, Percentages, Order of operations, Exponents, Two-step equations
- Reading level
- grades 5-6
- Theme
- The Mystery of the Haunted Harvest — set in Raven Hollow Festival
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects