Grade 4Reading: grades 7-9Place valueAdditionSubtractionMultiplicationDivision
Mystery of the Lost Sun Temple
During an overnight excavation at the ancient Sun Temple, a stealthy intruder breached the perimeter camp and snatched the golden sun stone. The expedition team relies on your analytical skills to parse the field notes and pinpoint the culprit before they escape the canyon.
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 | Infiltration Tool | Escape Gear | Dominant Hand | Hair Style | Defense Flaw |
|---|---|---|---|---|---|
| Koa Takahashi | Camouflage Net | Decoder Ring | Right Handed | Shaved Black | Loud Whistles |
| Amelia Vance | Grappling Hook | Decoder Ring | Left Handed | Shaved Black | Loud Whistles |
| Elena Rostova | Smoke Bomb | Night Goggles | Right Handed | Shaved Black | Magnet Traps |
| Leo Sterling | Grappling Hook | Decoder Ring | Left Handed | Dusty Blonde | Bright Sunlight |
| Maya Lin | Smoke Bomb | Climbing Spikes | Left Handed | Shaved Black | Loud Whistles |
| Dante Reyes | Flash Beacon | Glider Wings | Left Handed | Shaved Black | Loud Whistles |
| Isaac Stone | Smoke Bomb | Night Goggles | Right Handed | Dusty Blonde | Magnet Traps |
| Mateo Cruz | Camouflage Net | Glider Wings | Left Handed | Braided Brown | Loud Whistles |
| Fiona Gallagher | Flash Beacon | Waterproof Pack | Left Handed | Shaved Black | Loud Whistles |
| Julian Drake | Sonic Signal | Waterproof Pack | Right Handed | Braided Brown | Loud Whistles |
| Sienna Brooks | Flash Beacon | Night Goggles | Right Handed | Braided Brown | Magnet Traps |
| Lila Montgomery | Flash Beacon | Waterproof Pack | Right Handed | Shaved Black | Loud Whistles |
| Jasmine Patel | Sonic Signal | Glider Wings | Left Handed | Shaved Black | Loud Whistles |
| Paolo Rossi | Camouflage Net | Waterproof Pack | Right Handed | Braided Brown | Magnet Traps |
| Gavin Knox | Smoke Bomb | Climbing Spikes | Left Handed | Dusty Blonde | Bright Sunlight |
| Olivia Mercer | Grappling Hook | Night Goggles | Right Handed | Shaved Black | Bright Sunlight |
| Nico Santos | Camouflage Net | Night Goggles | Left Handed | Shaved Black | Bright Sunlight |
| Zara Kincaid | Camouflage Net | Climbing Spikes | Left Handed | Braided Brown | Bright Sunlight |
| Marcus Brody | Flash Beacon | Climbing Spikes | Right Handed | Braided Brown | Loud Whistles |
| Tobias Holt | Grappling Hook | Decoder Ring | Right Handed | Dusty Blonde | Magnet Traps |
| Chloe Bennett | Camouflage Net | Night Goggles | Right Handed | Braided Brown | Bright Sunlight |
Clue 1
Place value
The temple vault digital display shows place values for the security override sequence.
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
8000
80
90
3000
400
700
7000
90
3000
7000
500
90
40
200
500
T
8000
1000
40
90
6000
100
700
4000
9000
700
200
2000
40
800
700
300
90
40
What is the value of the 8 in 18,624?T
What is the value of the 4 in 4,810?M
What is the value of the 4 in 439?A
What is the value of the 6 in 6,817?C
What is the value of the 8 in 9,683?H
What is the value of the 5 in 516?O
What is the value of the 7 in 8,718?I
What is the value of the 3 in 7,311?K
What is the value of the 1 in 1,533?U
What is the value of the 2 in 2,811?G
What is the value of the 9 in 4,892?E
What is the value of the 9 in 19,071?B
What is the value of the 8 in 4,891?P
What is the value of the 2 in 291?N
What is the value of the 1 in 9,106?L
What is the value of the 3 in 83,869?R
What is the value of the 7 in 17,528?D
What is the value of the 4 in 940?S
0/18 letters found
Clue 2
Addition
To tally the total expedition gear recovered from camp combine the supply crates.
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
3617
3104
4161
5726
9294
9501
7718
9430
5154
T
3617
5154
6866
9501
4161
8930
T
3617
3104
6101
7225
7406
4161
7406
1864 + 1753 =T
4254 + 2612 =S
4103 + 3303 =D
1427 + 2734 =E
3474 + 2627 =A
3327 + 1827 =I
6280 + 3150 =R
1354 + 1750 =H
2183 + 5042 =N
3646 + 5284 =F
1922 + 3804 =C
3934 + 3784 =P
6371 + 2923 =U
5511 + 3990 =L
0/14 letters found
Clue 3
Subtraction
Calculate how many rations remain after subtracting the stolen expedition stores.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
R
5501
6159
1170
6159
1087
1087
6159
6953
6980
7898
1087
2321
3474
6953
1330
8742
4605
7595
6248
1087
6159
7595
6591 - 1090 =R
10478 - 2580 =Y
7035 - 787 =T
7833 - 4359 =U
5539 - 3218 =O
8856 - 1261 =S
13245 - 4503 =H
1509 - 339 =P
10570 - 4411 =E
3775 - 2445 =W
9796 - 2816 =B
1531 - 444 =L
9005 - 2052 =D
6763 - 2158 =I
0/14 letters found
Clue 4
Multiplication facts (1-12)
The storage tent holds equal rows of supply boxes that need to be counted.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
L
42
14
84
72
48
72
8
121
22
28
48
60
84
48
30
121
64
14
28
88
L
42
121
11
49
30
121
32
8
7 × 6 =L
11 × 1 =C
2 × 11 =N
4 × 2 =R
8 × 11 =B
11 × 11 =A
12 × 7 =F
7 × 2 =E
12 × 6 =T
10 × 6 =O
7 × 7 =K
7 × 4 =D
6 × 8 =S
8 × 8 =V
4 × 8 =I
6 × 5 =H
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
Divide the remaining survival lanterns equally among the research outposts.
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
36 ÷ 4 = ?
36 ÷ 6 = ?
8 ÷ 1 = ?
15 ÷ 5 = ?
84 ÷ 12 = ?
30 ÷ 6 = ?
60 ÷ 5 = ?
9 ÷ 9 = ?
110 ÷ 11 = ?
2 ÷ 1 = ?
110 ÷ 10 = ?
Step 2 — cross out the sentence with each answer
1.The villain fired a grappling hook, then escaped using glider wings.
2.The villain fired a grappling hook, then put on night goggles.
3.The villain lit a flash beacon, then latched with climbing spikes.
4.The villain lit a flash beacon, then escaped using glider wings.
5.The villain sent a sonic signal, then put on night goggles.
6.The villain sent a sonic signal, then escaped using glider wings.
7.The villain dropped a camouflage net, then put on night goggles.
8.The villain fired a grappling hook, then scrambled a decoder ring.
9.The villain lit a flash beacon, then secured a waterproof pack.
10.The villain sent a sonic signal, then latched with climbing spikes.
11.The villain threw a smoke bomb, then escaped using glider wings.
12.The villain dropped a camouflage net, then escaped using glider wings.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — Mystery of the Lost Sun Temple
Culprit: Dante Reyes (Flash Beacon · Glider Wings · Left Handed · Shaved Black · Loud Whistles)
- Clue 1 (Place value): "THE RAIDER DOES NOT USE CLIMBING SPIKES"What is the value of the 8 in 18,624? = 8000 (T) · What is the value of the 4 in 4,810? = 4000 (M) · What is the value of the 4 in 439? = 400 (A) · What is the value of the 6 in 6,817? = 6000 (C) · What is the value of the 8 in 9,683? = 80 (H) · What is the value of the 5 in 516? = 500 (O) · What is the value of the 7 in 8,718? = 700 (I) · What is the value of the 3 in 7,311? = 300 (K) · What is the value of the 1 in 1,533? = 1000 (U) · What is the value of the 2 in 2,811? = 2000 (G) · What is the value of the 9 in 4,892? = 90 (E) · What is the value of the 9 in 19,071? = 9000 (B) · What is the value of the 8 in 4,891? = 800 (P) · What is the value of the 2 in 291? = 200 (N) · What is the value of the 1 in 9,106? = 100 (L) · What is the value of the 3 in 83,869? = 3000 (R) · What is the value of the 7 in 17,528? = 7000 (D) · What is the value of the 4 in 940? = 40 (S)
- Clue 2 (Addition): "THE CULPRIT IS LEFT HANDED"1864 + 1753 = 3617 (T) · 4254 + 2612 = 6866 (S) · 4103 + 3303 = 7406 (D) · 1427 + 2734 = 4161 (E) · 3474 + 2627 = 6101 (A) · 3327 + 1827 = 5154 (I) · 6280 + 3150 = 9430 (R) · 1354 + 1750 = 3104 (H) · 2183 + 5042 = 7225 (N) · 3646 + 5284 = 8930 (F) · 1922 + 3804 = 5726 (C) · 3934 + 3784 = 7718 (P) · 6371 + 2923 = 9294 (U) · 5511 + 3990 = 9501 (L)
- Clue 3 (Subtraction): "REPELLED BY LOUD WHISTLES"6591 - 1090 = 5501 (R) · 10478 - 2580 = 7898 (Y) · 7035 - 787 = 6248 (T) · 7833 - 4359 = 3474 (U) · 5539 - 3218 = 2321 (O) · 8856 - 1261 = 7595 (S) · 13245 - 4503 = 8742 (H) · 1509 - 339 = 1170 (P) · 10570 - 4411 = 6159 (E) · 3775 - 2445 = 1330 (W) · 9796 - 2816 = 6980 (B) · 1531 - 444 = 1087 (L) · 9005 - 2052 = 6953 (D) · 6763 - 2158 = 4605 (I)
- Clue 4 (Multiplication facts (1-12)): "LEFT STRANDS OF SHAVED BLACK HAIR"7 × 6 = 42 (L) · 11 × 1 = 11 (C) · 2 × 11 = 22 (N) · 4 × 2 = 8 (R) · 8 × 11 = 88 (B) · 11 × 11 = 121 (A) · 12 × 7 = 84 (F) · 7 × 2 = 14 (E) · 12 × 6 = 72 (T) · 10 × 6 = 60 (O) · 7 × 7 = 49 (K) · 7 × 4 = 28 (D) · 6 × 8 = 48 (S) · 8 × 8 = 64 (V) · 4 × 8 = 32 (I) · 6 × 5 = 30 (H)
- Clue 5 (Division facts (1-12)): surviving statement (box 4) → Dante Reyes36 ÷ 4 = 9 · 36 ÷ 6 = 6 · 8 ÷ 1 = 8 · 15 ÷ 5 = 3 · 84 ÷ 12 = 7 · 30 ÷ 6 = 5 · 60 ÷ 5 = 12 · 9 ÷ 9 = 1 · 110 ÷ 11 = 10 · 2 ÷ 1 = 2 · 110 ÷ 10 = 11
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Place value, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 7-9
- Theme
- Mystery of the Lost Sun Temple — set in The Sunken Ruins of Coral Canyon
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects