Grade 8Reading: grades 7-9Fractions of a numberWord problemsMultiplicationSubtraction
The Mystery of the Sunken Temple
Someone broke into the Sunken Temple vault and snatched the Ancient Golden Trident! Use your detective skills and solve the math clues to reveal the guilty explorer.
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 | Dive Gear | Special Tool | Dominant Hand | Headgear | Vulnerability |
|---|---|---|---|---|---|
| Nina Reed | Grappling Hook | Magma Glove | Right Handed | Bright Orange Cap | Loud Whistle |
| Elena Cruz | Sonic Scanner | Deep Radar | Left Handed | Neon Green Helmet | High Magnet |
| Hugo Thorne | Plasma Torch | Triton Whistle | Left Handed | Neon Green Helmet | High Magnet |
| Oscar Wilde | Power Diver Suit | Crystal Compass | Right Handed | Neon Green Helmet | Loud Whistle |
| Felix Park | Grappling Hook | Neon Flares | Left Handed | Neon Green Helmet | Bright Flashlight |
| Devon Frost | Power Diver Suit | Triton Whistle | Right Handed | Bright Orange Cap | High Magnet |
| Samira Khan | Sonic Scanner | Deep Radar | Right Handed | Neon Green Helmet | High Magnet |
| Zack Sterling | Plasma Torch | Deep Radar | Left Handed | Neon Green Helmet | High Magnet |
| Rory Glen | Grappling Hook | Triton Whistle | Right Handed | Silver Diving Hood | Loud Whistle |
| Kai Vance | Power Diver Suit | Triton Whistle | Left Handed | Bright Orange Cap | Loud Whistle |
| Ivy West | Sonic Scanner | Magma Glove | Right Handed | Silver Diving Hood | High Magnet |
| Owen Drake | Grappling Hook | Deep Radar | Left Handed | Neon Green Helmet | Loud Whistle |
| Nadia Ray | Plasma Torch | Deep Radar | Left Handed | Bright Orange Cap | High Magnet |
| Maya Lin | Grappling Hook | Crystal Compass | Right Handed | Bright Orange Cap | High Magnet |
| Quinn Vance | Power Diver Suit | Crystal Compass | Left Handed | Bright Orange Cap | Bright Flashlight |
| Lucas Marsh | Grappling Hook | Deep Radar | Right Handed | Silver Diving Hood | Bright Flashlight |
| Kira Bell | Plasma Torch | Magma Glove | Left Handed | Neon Green Helmet | High Magnet |
| Gemma Rivers | Sonic Scanner | Crystal Compass | Left Handed | Neon Green Helmet | High Magnet |
| Jasper Cole | Sonic Scanner | Neon Flares | Left Handed | Neon Green Helmet | Loud Whistle |
| Leo Hayes | Power Diver Suit | Magma Glove | Right Handed | Bright Orange Cap | Bright Flashlight |
| Tara Blake | Grappling Hook | Crystal Compass | Left Handed | Neon Green Helmet | Loud Whistle |
Clue 1
Fractions of a number
We retrieved an encrypted field log from the dive computer containing several supply logs to decipher.
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
54
57
19
8
9
19
53
36
55
25
53
30
52
19
25
52
14
19
8
9
14
T
54
7
8
19
53
56
53
35
56
53
35
23
14
33
19
1/2 of 108 =T
1/3 of 27 =N
1/4 of 100 =R
4/8 of 14 =U
3/6 of 70 =G
1/3 of 168 =M
2/8 of 144 =K
2/10 of 95 =E
3/5 of 55 =V
2/8 of 92 =L
6/8 of 40 =I
2/4 of 106 =A
2/5 of 20 =S
4/8 of 110 =Y
2/6 of 42 =O
3/5 of 95 =H
2/3 of 78 =D
0/17 letters found
Clue 2
Word problems
The sonar map divides the sunken ruins into sectors showing only a fraction of the clear paths.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
L
104
17
9
108
58
112
24
D
17
D
There were 141 oxygen tanks. 37 were used up. How many oxygen tanks are left?L
Dive Master lined up 12 rows of 2 sea anchors. How many sea anchors in all?N
There were 21 oxygen tanks. 12 were used up. How many oxygen tanks are left?F
Dive Master found 11 waterproof tablets yesterday and 6 more today. How many waterproof tablets in all?E
Dive Master found 74 sea anchors yesterday and 34 more today. How many sea anchors in all?T
Dive Master found 68 waterproof tablets yesterday and 44 more today. How many waterproof tablets in all?A
There were 71 dive lights. 13 were used up. How many dive lights are left?H
0/7 letters found
Clue 3
Multiplication facts (1-12)
We found organized rows of supply crates left in the staging area that reveal gear counts.
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
21
64
48
60
120
48
6
96
3
60
12
60
66
48
54
T
21
2
48
132
132
T
21
49
6
64
40
28
64
44
6
28
120
48
T
21
7 × 3 =T
12 × 11 =L
4 × 3 =U
6 × 8 =E
8 × 12 =K
12 × 10 =N
1 × 2 =F
2 × 3 =A
8 × 8 =H
1 × 3 =Y
7 × 7 =O
4 × 7 =G
9 × 6 =C
5 × 8 =I
6 × 10 =S
4 × 11 =M
6 × 11 =P
0/17 letters found
Clue 4
Subtraction
Comparing the vault inventory before and after the breach reveals exact measurements.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
P
6668
8880
1490
1091
1490
4717
6852
2655
3252
8391
1490
6852
8391
3065
7616
1490
1490
8391
6875
1490
5830
6170
1490
1162
2266
1490
7616
1490
5830
1490
2655
1162
2433
1490
6875
8880
8391
6626
9773 - 3105 =P
6800 - 4534 =W
5661 - 944 =S
3125 - 60 =G
5648 - 4158 =E
9412 - 3582 =L
11588 - 4962 =D
4789 - 1537 =A
5964 - 4873 =C
9462 - 1846 =R
9075 - 2223 =O
9579 - 3409 =M
5082 - 2427 =F
12391 - 3511 =I
6113 - 4951 =T
9507 - 1116 =N
6432 - 3999 =B
6895 - 20 =H
0/18 letters found
Clue 5
Fractions of a number — the last clue
Analyzing the power cell readings gives us the fraction of energy spent during the getaway.
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
1/2 of 8 = ?
1/10 of 20 = ?
1/8 of 56 = ?
3/10 of 20 = ?
1/8 of 80 = ?
3/6 of 6 = ?
1/8 of 40 = ?
4/5 of 10 = ?
1/10 of 10 = ?
5/10 of 18 = ?
4/8 of 22 = ?
Step 2 — cross out the sentence with each answer
1.The villain floated in using a power diver suit, then blew the triton whistle.
2.The villain lit up the plasma torch, then checked the deep radar.
3.The villain turned on the sonic scanner, then dropped neon flares.
4.The villain turned on the sonic scanner, then consulted the crystal compass.
5.The villain floated in using a power diver suit, then checked the deep radar.
6.The villain fired the grappling hook, then grabbed the magma glove.
7.The villain turned on the sonic scanner, then checked the deep radar.
8.The villain zipped away on an underwater scooter, then checked the deep radar.
9.The villain zipped away on an underwater scooter, then dropped neon flares.
10.The villain turned on the sonic scanner, then blew the triton whistle.
11.The villain zipped away on an underwater scooter, then grabbed the magma glove.
12.The villain lit up the plasma torch, then blew the triton whistle.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Sunken Temple
Culprit: Hugo Thorne (Plasma Torch · Triton Whistle · Left Handed · Neon Green Helmet · High Magnet)
- Clue 1 (Fractions of a number): "THE SNEAKY RAIDER DOES NOT USE A MAGMA GLOVE"1/2 of 108 = 54 (T) · 1/3 of 27 = 9 (N) · 1/4 of 100 = 25 (R) · 4/8 of 14 = 7 (U) · 3/6 of 70 = 35 (G) · 1/3 of 168 = 56 (M) · 2/8 of 144 = 36 (K) · 2/10 of 95 = 19 (E) · 3/5 of 55 = 33 (V) · 2/8 of 92 = 23 (L) · 6/8 of 40 = 30 (I) · 2/4 of 106 = 53 (A) · 2/5 of 20 = 8 (S) · 4/8 of 110 = 55 (Y) · 2/6 of 42 = 14 (O) · 3/5 of 95 = 57 (H) · 2/3 of 78 = 52 (D)
- Clue 2 (Word problems): "LEFT HANDED"There were 141 oxygen tanks. 37 were used up. How many oxygen tanks are left? = 104 (L) · Dive Master lined up 12 rows of 2 sea anchors. How many sea anchors in all? = 24 (N) · There were 21 oxygen tanks. 12 were used up. How many oxygen tanks are left? = 9 (F) · Dive Master found 11 waterproof tablets yesterday and 6 more today. How many waterproof tablets in all? = 17 (E) · Dive Master found 74 sea anchors yesterday and 34 more today. How many sea anchors in all? = 108 (T) · Dive Master found 68 waterproof tablets yesterday and 44 more today. How many waterproof tablets in all? = 112 (A) · There were 71 dive lights. 13 were used up. How many dive lights are left? = 58 (H)
- Clue 3 (Multiplication facts (1-12)): "THE SNEAKY SUSPECT FELL TO A HIGH MAGNET"7 × 3 = 21 (T) · 12 × 11 = 132 (L) · 4 × 3 = 12 (U) · 6 × 8 = 48 (E) · 8 × 12 = 96 (K) · 12 × 10 = 120 (N) · 1 × 2 = 2 (F) · 2 × 3 = 6 (A) · 8 × 8 = 64 (H) · 1 × 3 = 3 (Y) · 7 × 7 = 49 (O) · 4 × 7 = 28 (G) · 9 × 6 = 54 (C) · 5 × 8 = 40 (I) · 6 × 10 = 60 (S) · 4 × 11 = 44 (M) · 6 × 11 = 66 (P)
- Clue 4 (Subtraction): "PIECES OF A NEON GREEN HELMET WERE LEFT BEHIND"9773 - 3105 = 6668 (P) · 6800 - 4534 = 2266 (W) · 5661 - 944 = 4717 (S) · 3125 - 60 = 3065 (G) · 5648 - 4158 = 1490 (E) · 9412 - 3582 = 5830 (L) · 11588 - 4962 = 6626 (D) · 4789 - 1537 = 3252 (A) · 5964 - 4873 = 1091 (C) · 9462 - 1846 = 7616 (R) · 9075 - 2223 = 6852 (O) · 9579 - 3409 = 6170 (M) · 5082 - 2427 = 2655 (F) · 12391 - 3511 = 8880 (I) · 6113 - 4951 = 1162 (T) · 9507 - 1116 = 8391 (N) · 6432 - 3999 = 2433 (B) · 6895 - 20 = 6875 (H)
- Clue 5 (Fractions of a number): surviving statement (box 12) → Hugo Thorne1/2 of 8 = 4 · 1/10 of 20 = 2 · 1/8 of 56 = 7 · 3/10 of 20 = 6 · 1/8 of 80 = 10 · 3/6 of 6 = 3 · 1/8 of 40 = 5 · 4/5 of 10 = 8 · 1/10 of 10 = 1 · 5/10 of 18 = 9 · 4/8 of 22 = 11
About this mystery
- Grade level
- Grade 8 math
- Math topics
- Fractions of a number, Word problems, Multiplication, Subtraction
- Reading level
- grades 7-9
- Theme
- The Mystery of the Sunken Temple — set in The Sunken Ruins of Coral Temple
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects