🔎 Stranger ThingsGrade 6Reading: grades 3-4MultiplicationWord problemsMulti-step word problemsPercentagesMissing addends
The Shadow Realm Mystery
A strange creature from a parallel dimension has breached the town lab! Solve the math clues to identify the 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 | Shadow Power | Gadget | Dominant Hand | Hairstyle | Weakness |
|---|---|---|---|---|---|
| Max M | Mind Whisper | Ham Radio | Left Handed | Shaggy Mullet | Heat Lamp |
| Erica S | Portal Warp | Ham Radio | Right Handed | Curly Top | Salt Bath |
| Bob N | Portal Warp | Slingshot Shot | Left Handed | Shaggy Mullet | Loud Music |
| Nancy W | Mind Whisper | Slingshot Shot | Right Handed | Shaggy Mullet | Loud Music |
| Billy H | Telekinesis | Walkie Jammer | Left Handed | Buzz Cut | Loud Music |
| Robin B | Portal Warp | Ham Radio | Left Handed | Curly Top | Heat Lamp |
| Argyle K | Mind Whisper | Ham Radio | Left Handed | Shaggy Mullet | Loud Music |
| Joyce B | Vine Trap | Flashlight Array | Left Handed | Shaggy Mullet | Loud Music |
| Holly W | Electric Surge | Slingshot Shot | Left Handed | Buzz Cut | Salt Bath |
| Jonathan B | Electric Surge | Ham Radio | Left Handed | Curly Top | Heat Lamp |
| Lucas M | Electric Surge | Walkie Jammer | Right Handed | Curly Top | Salt Bath |
| Dustin B | Vine Trap | Flashlight Array | Left Handed | Buzz Cut | Heat Lamp |
| Barb H | Electric Surge | Flashlight Array | Left Handed | Shaggy Mullet | Salt Bath |
| Eleven Z | Electric Surge | Slingshot Shot | Right Handed | Curly Top | Loud Music |
| Murray B | Vine Trap | Ham Radio | Right Handed | Shaggy Mullet | Heat Lamp |
| Vickie T | Vine Trap | Walkie Jammer | Left Handed | Buzz Cut | Heat Lamp |
| Will B | Vine Trap | Walkie Jammer | Left Handed | Shaggy Mullet | Loud Music |
| Karen W | Telekinesis | Walkie Jammer | Left Handed | Shaggy Mullet | Loud Music |
| Carol P | Vine Trap | Compass Spin | Left Handed | Shaggy Mullet | Salt Bath |
| Tommy H | Electric Surge | Ham Radio | Left Handed | Buzz Cut | Loud Music |
| Steve H | Electric Surge | Ham Radio | Right Handed | Shaggy Mullet | Loud Music |
Clue 1
Multiplication facts (1-12)
We tallied rows of strange shadow portals blooming across the lab map.
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
7
2
35
30
33
121
121
14
33
96
81
24
35
22
96
24
T
7
54
22
35
14
21
121
14
22
2
121
33
10
2
T
7
14
1
1
14
60
7 × 1 =T
5 × 7 =E
2 × 11 =S
12 × 8 =N
3 × 10 =V
9 × 6 =U
2 × 7 =A
6 × 4 =O
3 × 7 =F
10 × 1 =G
1 × 2 =H
3 × 11 =I
1 × 1 =R
11 × 11 =L
12 × 5 =Y
9 × 9 =D
0/16 letters found
Clue 2
Word problems
The kids analyzed radio frequencies coming from the mysterious dark dimension.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
L
103
115
69
102
38
101
23
D
115
D
There were 108 walkie talkies. 5 were used up. How many walkie talkies are left?L
There were 79 waffles. 10 were used up. How many waffles are left?F
Sheriff found 22 compasses yesterday and 16 more today. How many compasses in all?H
There were 28 walkie talkies. 5 were used up. How many walkie talkies are left?N
There were 106 cassette tapes. 5 were used up. How many cassette tapes are left?A
Sheriff found 65 cassette tapes yesterday and 37 more today. How many cassette tapes in all?T
Sheriff found 93 waffles yesterday and 22 more today. How many waffles in all?E
0/7 letters found
Clue 3
Multi-step word problems
The sheriff calculated supply crates and battery packs needed for the expedition.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Someonescaredthevillainoffwith .
L
80
31
86
14
84
86
78
23
C
Sheriff collected 10 compasses in the morning and 310 compasses in the afternoon, then split them equally among 4 AV Club. How many compasses did each get?L
There were 124 cassette tapes in all. 1 AV Club used 9 cassette tapes each. The other 5 AV Club shared the rest equally. How many cassette tapes did each of the other AV Club get?I
Sheriff earned 5 compasses in each of 2 rounds, plus 32 bonus compasses. Then 11 compasses were lost. How many compasses are left?O
Sheriff collected 86 waffles in the morning and 86 waffles in the afternoon, then split them equally among 2 AV Club. How many waffles did each get?U
Sheriff collected 8 compasses in the morning and 62 compasses in the afternoon, then split them equally among 5 AV Club. How many compasses did each get?D
Sheriff collected 35 cassette tapes in the morning and 199 cassette tapes in the afternoon, then split them equally among 3 AV Club. How many cassette tapes did each get?S
Sheriff filled 5 boxes with 2 cassette tapes each, then found 74 more cassette tapes. How many cassette tapes are there in all?M
0/7 letters found
Clue 4
Percentages
The radar screen showed the exact percentage of power remaining in the town grid.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
S
6
16
44
14
14
17
25
20
41
41
8
34
16
44
21
12
28
44
S
6
37
29
20
5
36
29
5
34
16
8
23
21
5
8
25% of 24 =S
5% of 420 =I
25% of 20 =N
5% of 320 =H
5% of 880 =A
10% of 290 =O
40% of 20 =E
50% of 40 =U
10% of 370 =F
10% of 230 =V
20% of 205 =L
25% of 112 =W
10% of 340 =T
10% of 120 =R
20% of 70 =G
25% of 144 =D
25% of 68 =Y
20% of 125 =M
0/18 letters found
Clue 5
Missing addends — the last clue
We counted flashlights in the stash box to find how many went missing.
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
15 + ___ = 20
18 + ___ = 29
33 + ___ = 39
38 + ___ = 40
33 + ___ = 45
22 + ___ = 29
28 + ___ = 29
13 + ___ = 17
18 + ___ = 28
17 + ___ = 20
40 + ___ = 49
Step 2 — cross out the sentence with each answer
1.The villain opened a rift to the shadow world, then launched a slingshot pellet.
2.The villain sent out creeping vines, then spun every compass in town.
3.The villain sent out creeping vines, then blinded the guards with flashlights.
4.The villain whispered across the void, then blinded the guards with flashlights.
5.The villain whispered across the void, then broadcasted static over ham radio.
6.The villain blasted a telepathic wave, then jammed all walkie talkies.
7.The villain whispered across the void, then spun every compass in town.
8.The villain sent out creeping vines, then launched a slingshot pellet.
9.The villain sent out creeping vines, then jammed all walkie talkies.
10.The villain zapped the radio tower, then spun every compass in town.
11.The villain opened a rift to the shadow world, then jammed all walkie talkies.
12.The villain opened a rift to the shadow world, then broadcasted static over ham radio.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Shadow Realm Mystery
Culprit: Bob N (Portal Warp · Slingshot Shot · Left Handed · Shaggy Mullet · Loud Music)
- Clue 1 (Multiplication facts (1-12)): "THE VILLAIN DOES NOT USE A FLASHLIGHT ARRAY"7 × 1 = 7 (T) · 5 × 7 = 35 (E) · 2 × 11 = 22 (S) · 12 × 8 = 96 (N) · 3 × 10 = 30 (V) · 9 × 6 = 54 (U) · 2 × 7 = 14 (A) · 6 × 4 = 24 (O) · 3 × 7 = 21 (F) · 10 × 1 = 10 (G) · 1 × 2 = 2 (H) · 3 × 11 = 33 (I) · 1 × 1 = 1 (R) · 11 × 11 = 121 (L) · 12 × 5 = 60 (Y) · 9 × 9 = 81 (D)
- Clue 2 (Word problems): "LEFT HANDED"There were 108 walkie talkies. 5 were used up. How many walkie talkies are left? = 103 (L) · There were 79 waffles. 10 were used up. How many waffles are left? = 69 (F) · Sheriff found 22 compasses yesterday and 16 more today. How many compasses in all? = 38 (H) · There were 28 walkie talkies. 5 were used up. How many walkie talkies are left? = 23 (N) · There were 106 cassette tapes. 5 were used up. How many cassette tapes are left? = 101 (A) · Sheriff found 65 cassette tapes yesterday and 37 more today. How many cassette tapes in all? = 102 (T) · Sheriff found 93 waffles yesterday and 22 more today. How many waffles in all? = 115 (E)
- Clue 3 (Multi-step word problems): "LOUD MUSIC"Sheriff collected 10 compasses in the morning and 310 compasses in the afternoon, then split them equally among 4 AV Club. How many compasses did each get? = 80 (L) · There were 124 cassette tapes in all. 1 AV Club used 9 cassette tapes each. The other 5 AV Club shared the rest equally. How many cassette tapes did each of the other AV Club get? = 23 (I) · Sheriff earned 5 compasses in each of 2 rounds, plus 32 bonus compasses. Then 11 compasses were lost. How many compasses are left? = 31 (O) · Sheriff collected 86 waffles in the morning and 86 waffles in the afternoon, then split them equally among 2 AV Club. How many waffles did each get? = 86 (U) · Sheriff collected 8 compasses in the morning and 62 compasses in the afternoon, then split them equally among 5 AV Club. How many compasses did each get? = 14 (D) · Sheriff collected 35 cassette tapes in the morning and 199 cassette tapes in the afternoon, then split them equally among 3 AV Club. How many cassette tapes did each get? = 78 (S) · Sheriff filled 5 boxes with 2 cassette tapes each, then found 74 more cassette tapes. How many cassette tapes are there in all? = 84 (M)
- Clue 4 (Percentages): "SHAGGY MULLET HAIR WAS FOUND ON THE VINE"25% of 24 = 6 (S) · 5% of 420 = 21 (I) · 25% of 20 = 5 (N) · 5% of 320 = 16 (H) · 5% of 880 = 44 (A) · 10% of 290 = 29 (O) · 40% of 20 = 8 (E) · 50% of 40 = 20 (U) · 10% of 370 = 37 (F) · 10% of 230 = 23 (V) · 20% of 205 = 41 (L) · 25% of 112 = 28 (W) · 10% of 340 = 34 (T) · 10% of 120 = 12 (R) · 20% of 70 = 14 (G) · 25% of 144 = 36 (D) · 25% of 68 = 17 (Y) · 20% of 125 = 25 (M)
- Clue 5 (Missing addends): surviving statement (box 8) → Bob N15 + ___ = 20 = 5 · 18 + ___ = 29 = 11 · 33 + ___ = 39 = 6 · 38 + ___ = 40 = 2 · 33 + ___ = 45 = 12 · 22 + ___ = 29 = 7 · 28 + ___ = 29 = 1 · 13 + ___ = 17 = 4 · 18 + ___ = 28 = 10 · 17 + ___ = 20 = 3 · 40 + ___ = 49 = 9
About this mystery
- Grade level
- Grade 6 math
- Math topics
- Multiplication, Word problems, Multi-step word problems, Percentages, Missing addends
- Reading level
- grades 3-4
- Theme
- The Shadow Realm Mystery — set in Oakhaven Town Library and underground tunnels
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects