Grade 4Reading: grades 3-4AdditionRoundingSubtractionMultiplicationDivision
The Mystery of the Sunken Temple
A sneaky temple raider swiped the Golden Monkey Idol right off its stone pedestal! Use your detective skills and solve the math clues to figure out who snuck into the ruins.
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 | Adventure Skill | Mystery Item | Dominant Hand | Headgear | Secret Weakness |
|---|---|---|---|---|---|
| Victor Vine | Vine Gliding | Grappling Hook | Right-handed | Leather Helmet | Flashlight Beam |
| Rory Ranger | Boulder Rolling | Ancient Journal | Right-handed | Leather Helmet | Flashlight Beam |
| Otis Outpost | Vine Gliding | Smoke Bombs | Right-handed | Red Cap | Sneeze Powder |
| Clara Compass | Boulder Rolling | Ancient Journal | Left-handed | Leather Helmet | Loud Whistle |
| Leo Lasso | Map Reading | Iron Shield | Right-handed | Leather Helmet | Flashlight Beam |
| Ivy Trekker | Torch Lighting | Ancient Journal | Right-handed | Red Cap | Sneeze Powder |
| Zack Zephyr | Torch Lighting | Brass Compass | Right-handed | Leather Helmet | Flashlight Beam |
| Hugo Hunter | Map Reading | Brass Compass | Right-handed | Leather Helmet | Sneeze Powder |
| Yara Yonder | Boulder Rolling | Iron Shield | Right-handed | Leather Helmet | Flashlight Beam |
| Felix Fern | Vine Gliding | Smoke Bombs | Left-handed | Straw Hat | Sneeze Powder |
| Sienna Scout | Lasso Swinging | Smoke Bombs | Left-handed | Red Cap | Loud Whistle |
| Penny Pathfinder | Vine Gliding | Smoke Bombs | Right-handed | Straw Hat | Sneeze Powder |
| Maya Mapmaker | Map Reading | Ancient Journal | Right-handed | Leather Helmet | Sneeze Powder |
| Ruby Runner | Lasso Swinging | Iron Shield | Left-handed | Red Cap | Loud Whistle |
| Willa Wild | Map Reading | Ancient Journal | Left-handed | Leather Helmet | Flashlight Beam |
| Sammy Swift | Boulder Rolling | Ancient Journal | Right-handed | Red Cap | Sneeze Powder |
| Tess Trail | Vine Gliding | Iron Shield | Right-handed | Red Cap | Flashlight Beam |
| Xander Expedition | Torch Lighting | Iron Shield | Left-handed | Leather Helmet | Loud Whistle |
| Toby Torch | Map Reading | Smoke Bombs | Right-handed | Red Cap | Flashlight Beam |
| Gemma Globe | Lasso Swinging | Iron Shield | Right-handed | Straw Hat | Sneeze Powder |
| Fiona Finder | Boulder Rolling | Iron Shield | Right-handed | Straw Hat | Loud Whistle |
Clue 1
Addition
The team tallied all the trail supplies gathered from the camp to track down the raider.
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
6428
7413
6385
5505
2941
3584
3584
8882
2941
5971
8363
6082
6385
4429
5971
6082
T
6428
6799
4429
6385
8882
8250
8646
8882
8874
8874
3584
2941
5971
8250
7413
6082
6082
5035
2417 + 4011 =T
4664 + 3982 =R
2348 + 2687 =K
2590 + 3381 =N
1821 + 3684 =V
3417 + 2665 =O
3710 + 4653 =D
2080 + 1504 =L
4271 + 2114 =E
5037 + 3845 =A
2713 + 1716 =S
3326 + 3473 =U
1205 + 1736 =I
3206 + 5668 =P
4035 + 4215 =G
3399 + 4014 =H
0/16 letters found
Clue 2
Rounding
The digital sonar readout only showed rounded distances to the hidden temple chambers.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
W
2300
110
1300
370
2900
90
90
2900
90
90
430
W
2300
430
900
110
9000
70
1300
70
430
370
200
2900
200
2900
50
1100
4300
2000
900
2900
900
Round 2,290 to the nearest hundredW
Round 89 to the nearest tenS
Round 8,972 to the nearest thousandG
Round 1,915 to the nearest thousandO
Round 1,128 to the nearest hundredP
Round 947 to the nearest hundredR
Round 368 to the nearest tenN
Round 1,260 to the nearest hundredT
Round 54 to the nearest tenX
Round 240 to the nearest hundredD
Round 70 to the nearest tenH
Round 2,936 to the nearest hundredE
Round 4,255 to the nearest hundredL
Round 114 to the nearest tenI
Round 427 to the nearest tenA
0/15 letters found
Clue 3
Subtraction
The scout calculated how many supplies remained after the raider raided the pack.
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
1938
1372
5304
A
1938
8894
5599
5304
8570
6176
5599
3030
7842
4925
A
1938
2306
7842
5304
8570
3063
5117
4925
5117
3030
5599
4925
3981
8570
5304
5304
A
1938
8570
3063
5245 - 3307 =A
8647 - 3722 =E
6093 - 4721 =F
6870 - 1566 =L
7895 - 4832 =N
10888 - 4712 =G
8718 - 876 =B
10580 - 2010 =I
5511 - 2481 =T
4371 - 2065 =M
10108 - 4991 =D
9563 - 669 =S
6135 - 536 =H
4485 - 504 =V
0/14 letters found
Clue 4
Multiplication facts (1-12)
The guide counted the total gems by checking equal rows carved into the altar.
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
84
25
90
A
84
30
120
90
8
120
90
25
20
90
30
27
A
84
80
25
90
50
30
A
84
30
30
120
90
80
11
90
36
90
7 × 12 =A
11 × 1 =C
5 × 10 =F
1 × 8 =R
9 × 10 =E
3 × 9 =W
5 × 5 =L
10 × 2 =M
3 × 12 =N
12 × 10 =H
3 × 10 =T
10 × 8 =S
0/12 letters found
Clue 5
Division facts (1-12) — the last clue
The crew split the rescued artifacts equally into storage crates for safety.
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
40 ÷ 4 = ?
108 ÷ 12 = ?
96 ÷ 12 = ?
6 ÷ 1 = ?
20 ÷ 10 = ?
35 ÷ 7 = ?
11 ÷ 11 = ?
30 ÷ 10 = ?
28 ÷ 4 = ?
28 ÷ 7 = ?
11 ÷ 1 = ?
Step 2 — cross out the sentence with each answer
1.The villain swung across the pit, then threw a dark smoke bomb.
2.The villain glided down the long vine, then checked the brass compass.
3.The villain swung across the pit, then copied notes in a journal.
4.The villain rolled the giant boulder, then shot a heavy grappling hook.
5.The villain lit the dark passage, then blocked traps with an iron shield.
6.The villain swung across the pit, then shot a heavy grappling hook.
7.The villain rolled the giant boulder, then checked the brass compass.
8.The villain rolled the giant boulder, then blocked traps with an iron shield.
9.The villain rolled the giant boulder, then copied notes in a journal.
10.The villain lit the dark passage, then checked the brass compass.
11.The villain swung across the pit, then checked the brass compass.
12.The villain read the ancient map, then blocked traps with an iron shield.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Sunken Temple
Culprit: Leo Lasso (Map Reading · Iron Shield · Right-handed · Leather Helmet · Flashlight Beam)
- Clue 1 (Addition): "THE VILLAIN DOES NOT USE A GRAPPLING HOOK"2417 + 4011 = 6428 (T) · 4664 + 3982 = 8646 (R) · 2348 + 2687 = 5035 (K) · 2590 + 3381 = 5971 (N) · 1821 + 3684 = 5505 (V) · 3417 + 2665 = 6082 (O) · 3710 + 4653 = 8363 (D) · 2080 + 1504 = 3584 (L) · 4271 + 2114 = 6385 (E) · 5037 + 3845 = 8882 (A) · 2713 + 1716 = 4429 (S) · 3326 + 3473 = 6799 (U) · 1205 + 1736 = 2941 (I) · 3206 + 5668 = 8874 (P) · 4035 + 4215 = 8250 (G) · 3399 + 4014 = 7413 (H)
- Clue 2 (Rounding): "WITNESSES SAW A RIGHT HANDED EXPLORER"Round 2,290 to the nearest hundred = 2300 (W) · Round 89 to the nearest ten = 90 (S) · Round 8,972 to the nearest thousand = 9000 (G) · Round 1,915 to the nearest thousand = 2000 (O) · Round 1,128 to the nearest hundred = 1100 (P) · Round 947 to the nearest hundred = 900 (R) · Round 368 to the nearest ten = 370 (N) · Round 1,260 to the nearest hundred = 1300 (T) · Round 54 to the nearest ten = 50 (X) · Round 240 to the nearest hundred = 200 (D) · Round 70 to the nearest ten = 70 (H) · Round 2,936 to the nearest hundred = 2900 (E) · Round 4,255 to the nearest hundred = 4300 (L) · Round 114 to the nearest ten = 110 (I) · Round 427 to the nearest ten = 430 (A)
- Clue 3 (Subtraction): "A FLASHLIGHT BEAM BLINDED THE VILLAIN"5245 - 3307 = 1938 (A) · 8647 - 3722 = 4925 (E) · 6093 - 4721 = 1372 (F) · 6870 - 1566 = 5304 (L) · 7895 - 4832 = 3063 (N) · 10888 - 4712 = 6176 (G) · 8718 - 876 = 7842 (B) · 10580 - 2010 = 8570 (I) · 5511 - 2481 = 3030 (T) · 4371 - 2065 = 2306 (M) · 10108 - 4991 = 5117 (D) · 9563 - 669 = 8894 (S) · 6135 - 536 = 5599 (H) · 4485 - 504 = 3981 (V)
- Clue 4 (Multiplication facts (1-12)): "A LEATHER HELMET WAS LEFT AT THE SCENE"7 × 12 = 84 (A) · 11 × 1 = 11 (C) · 5 × 10 = 50 (F) · 1 × 8 = 8 (R) · 9 × 10 = 90 (E) · 3 × 9 = 27 (W) · 5 × 5 = 25 (L) · 10 × 2 = 20 (M) · 3 × 12 = 36 (N) · 12 × 10 = 120 (H) · 3 × 10 = 30 (T) · 10 × 8 = 80 (S)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Leo Lasso40 ÷ 4 = 10 · 108 ÷ 12 = 9 · 96 ÷ 12 = 8 · 6 ÷ 1 = 6 · 20 ÷ 10 = 2 · 35 ÷ 7 = 5 · 11 ÷ 11 = 1 · 30 ÷ 10 = 3 · 28 ÷ 4 = 7 · 28 ÷ 7 = 4 · 11 ÷ 1 = 11
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Addition, Rounding, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Mystery of the Sunken Temple — set in Sunken Jungle Temple
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects