Grade 7Reading: grades 7-9RoundingWord problemsIntegersPercentagesMissing addends
The Mystery of the Sunken Temple
During a midnight storm, an elusive intruder broke into the central vault of the Sunken Temple of Zun and snatched the legendary Crystal Idol. Lead Archaeologist Dr. Vance needs your help to examine the evidence and unmask the rogue explorer before they escape the jungle.
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 | Primary Gear | Secondary Tool | Dominant Hand | Hairstyle | Exploitable Weakness |
|---|---|---|---|---|---|
| Talia Al Mansoor | Sonic Whistle | Compass | Left Handed | Braided Ponytail | Bright Flashlights |
| Hugo Mercer | Sonic Whistle | Decoder Ring | Left Handed | Braided Ponytail | Bright Flashlights |
| Chloe Bennet | Grappling Hook | Climbing Pitons | Right Handed | Braided Ponytail | Squeaking Toys |
| Kai Tanaka | Sonic Whistle | Machete | Left Handed | Braided Ponytail | Squeaking Toys |
| Freya Lind | Grappling Hook | Compass | Right Handed | Curly Topknot | Squeaking Toys |
| Lara Finch | Grappling Hook | Signal Flare | Left Handed | Braided Ponytail | Bright Flashlights |
| Nora Vance | Smoke Bombs | Decoder Ring | Left Handed | Braided Ponytail | Bright Flashlights |
| Leo Cruz | Flash Torch | Compass | Right Handed | Braided Ponytail | Bright Flashlights |
| Captain Harlow | Sonic Whistle | Decoder Ring | Right Handed | Braided Ponytail | Squeaking Toys |
| Maya Rivers | Sonic Whistle | Climbing Pitons | Right Handed | Braided Ponytail | Loud Whistles |
| Felix Thorne | Glider Suit | Climbing Pitons | Right Handed | Spiky Crewcut | Squeaking Toys |
| Sienna Stone | Grappling Hook | Machete | Left Handed | Curly Topknot | Squeaking Toys |
| Professor Quigley | Glider Suit | Machete | Right Handed | Spiky Crewcut | Bright Flashlights |
| Aria Delgado | Smoke Bombs | Climbing Pitons | Right Handed | Braided Ponytail | Squeaking Toys |
| Gideon Pike | Flash Torch | Compass | Right Handed | Spiky Crewcut | Loud Whistles |
| Elena Rostova | Sonic Whistle | Signal Flare | Right Handed | Curly Topknot | Loud Whistles |
| Indiana Drake | Glider Suit | Signal Flare | Right Handed | Braided Ponytail | Squeaking Toys |
| Dr Marcus Vance | Sonic Whistle | Climbing Pitons | Left Handed | Spiky Crewcut | Loud Whistles |
| Dante Brooks | Grappling Hook | Signal Flare | Right Handed | Spiky Crewcut | Squeaking Toys |
| Jasper Cole | Flash Torch | Compass | Left Handed | Spiky Crewcut | Squeaking Toys |
| Samira Khan | Flash Torch | Signal Flare | Right Handed | Braided Ponytail | Squeaking Toys |
Clue 1
Rounding
To map out the intruder escape path through the temple corridors, the team calculated supply distribution and travel times across the ancient ruins.
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
290
5000
30
2000
7000
170
170
70
7000
3700
20
500
30
3000
3700
500
T
290
110
3000
30
70
20
30
50
500
20
30
300
300
7000
3700
370
Round 293 to the nearest tenT
Round 373 to the nearest tenG
Round 31 to the nearest tenE
Round 4,695 to the nearest thousandH
Round 1,908 to the nearest thousandV
Round 18 to the nearest tenD
Round 3,666 to the nearest hundredN
Round 46 to the nearest tenC
Round 67 to the nearest tenA
Round 520 to the nearest hundredO
Round 347 to the nearest hundredR
Round 168 to the nearest tenL
Round 7,407 to the nearest thousandI
Round 3,481 to the nearest thousandS
Round 113 to the nearest tenU
0/15 letters found
Clue 2
Word problems
The team scanned the high tech pressure sensors along the temple floor, which rounded the intruder weight readings to the nearest ten kilograms.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
R
15
119
38
62
76
62
18
111
D
E
D
Archaeologist lined up 5 rows of 3 rubies. How many rubies in all?R
Archaeologist found 24 ancient scrolls yesterday and 52 more today. How many ancient scrolls in all?T
There were 146 golden idols. 27 were used up. How many golden idols are left?I
Archaeologist found 2 bronze coins yesterday and 16 more today. How many bronze coins in all?A
Archaeologist found 56 ancient scrolls yesterday and 55 more today. How many ancient scrolls in all?N
There were 86 ancient scrolls. 24 were used up. How many ancient scrolls are left?H
There were 74 ancient scrolls. 36 were used up. How many ancient scrolls are left?G
0/7 letters found
Clue 3
Integers
Analyzing the temperature changes and elevation drops inside the subterranean chambers required tracking positive and negative integers.
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
22
9
28
14
4
14
10
28
17
T
22
20
1
14
14
17
1
13
28
24
3
18
14
19
4
28
1
29
7
11
12
T
22
21
18
14
(-13) + 35 =T
2 - (-9) =N
(-10) + 38 =E
(-15) + 36 =O
(-10) + 34 =D
8 - (-12) =W
(-8) + 17 =H
(-9) + 27 =Y
(-6) + 7 =A
(-1) + 5 =U
(-8) + 21 =R
(-15) + 44 =K
(-15) + 25 =P
2 - (-15) =C
2 - (-5) =I
(-4) + 16 =G
(-14) + 28 =S
(-10) + 13 =B
16 - (-3) =Q
0/19 letters found
Clue 4
Percentages
By evaluating the percentage of stolen relics recovered from each campsite, the investigators narrowed down the search 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.
B
54
34
25
3
37
42
37
46
60
21
17
40
25
3
39
12
40
34
25
21
37
12
25
40
12
8
42
21
42
75% of 72 =B
20% of 300 =O
5% of 840 =E
10% of 460 =P
25% of 84 =N
5% of 500 =A
40% of 20 =C
75% of 4 =I
75% of 52 =L
50% of 74 =D
5% of 680 =R
5% of 800 =T
20% of 60 =S
10% of 170 =Y
0/14 letters found
Clue 5
Missing addends — the last clue
The vault door required entering missing weight values to balance the pressure scales left behind by the intruder.
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 + ___ = 23
21 + ___ = 33
5 + ___ = 15
4 + ___ = 9
3 + ___ = 10
34 + ___ = 40
24 + ___ = 26
34 + ___ = 37
27 + ___ = 31
3 + ___ = 12
33 + ___ = 34
Step 2 — cross out the sentence with each answer
1.The villain vanished into a cloud of smoke, then decoded the glyphs on the altar.
2.The villain blinded the night guards with a beam, then checked the ancient star map.
3.The villain shattered the stone lock with sound, then checked the ancient star map.
4.The villain vanished into a cloud of smoke, then cleared a path through dense vines.
5.The villain blinded the night guards with a beam, then cleared a path through dense vines.
6.The villain shattered the stone lock with sound, then cleared a path through dense vines.
7.The villain shattered the stone lock with sound, then decoded the glyphs on the altar.
8.The villain swung across the ancient chasm, then anchored ropes to the stone pillar.
9.The villain vanished into a cloud of smoke, then lit up the underground cavern.
10.The villain blinded the night guards with a beam, then lit up the underground cavern.
11.The villain vanished into a cloud of smoke, then anchored ropes to the stone pillar.
12.The villain glided down from the temple roof, then lit up the underground cavern.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Sunken Temple
Culprit: Aria Delgado (Smoke Bombs · Climbing Pitons · Right Handed · Braided Ponytail · Squeaking Toys)
- Clue 1 (Rounding): "THE VILLAIN DOES NOT USE A DECODER RING"Round 293 to the nearest ten = 290 (T) · Round 373 to the nearest ten = 370 (G) · Round 31 to the nearest ten = 30 (E) · Round 4,695 to the nearest thousand = 5000 (H) · Round 1,908 to the nearest thousand = 2000 (V) · Round 18 to the nearest ten = 20 (D) · Round 3,666 to the nearest hundred = 3700 (N) · Round 46 to the nearest ten = 50 (C) · Round 67 to the nearest ten = 70 (A) · Round 520 to the nearest hundred = 500 (O) · Round 347 to the nearest hundred = 300 (R) · Round 168 to the nearest ten = 170 (L) · Round 7,407 to the nearest thousand = 7000 (I) · Round 3,481 to the nearest thousand = 3000 (S) · Round 113 to the nearest ten = 110 (U)
- Clue 2 (Word problems): "RIGHT HANDED"Archaeologist lined up 5 rows of 3 rubies. How many rubies in all? = 15 (R) · Archaeologist found 24 ancient scrolls yesterday and 52 more today. How many ancient scrolls in all? = 76 (T) · There were 146 golden idols. 27 were used up. How many golden idols are left? = 119 (I) · Archaeologist found 2 bronze coins yesterday and 16 more today. How many bronze coins in all? = 18 (A) · Archaeologist found 56 ancient scrolls yesterday and 55 more today. How many ancient scrolls in all? = 111 (N) · There were 86 ancient scrolls. 24 were used up. How many ancient scrolls are left? = 62 (H) · There were 74 ancient scrolls. 36 were used up. How many ancient scrolls are left? = 38 (G)
- Clue 3 (Integers): "THE SUSPECT WAS SCARED BY SQUEAKING TOYS"(-13) + 35 = 22 (T) · 2 - (-9) = 11 (N) · (-10) + 38 = 28 (E) · (-15) + 36 = 21 (O) · (-10) + 34 = 24 (D) · 8 - (-12) = 20 (W) · (-8) + 17 = 9 (H) · (-9) + 27 = 18 (Y) · (-6) + 7 = 1 (A) · (-1) + 5 = 4 (U) · (-8) + 21 = 13 (R) · (-15) + 44 = 29 (K) · (-15) + 25 = 10 (P) · 2 - (-15) = 17 (C) · 2 - (-5) = 7 (I) · (-4) + 16 = 12 (G) · (-14) + 28 = 14 (S) · (-10) + 13 = 3 (B) · 16 - (-3) = 19 (Q)
- Clue 4 (Percentages): "BRAIDED PONYTAIL STRANDS AT SCENE"75% of 72 = 54 (B) · 20% of 300 = 60 (O) · 5% of 840 = 42 (E) · 10% of 460 = 46 (P) · 25% of 84 = 21 (N) · 5% of 500 = 25 (A) · 40% of 20 = 8 (C) · 75% of 4 = 3 (I) · 75% of 52 = 39 (L) · 50% of 74 = 37 (D) · 5% of 680 = 34 (R) · 5% of 800 = 40 (T) · 20% of 60 = 12 (S) · 10% of 170 = 17 (Y)
- Clue 5 (Missing addends): surviving statement (box 11) → Aria Delgado15 + ___ = 23 = 8 · 21 + ___ = 33 = 12 · 5 + ___ = 15 = 10 · 4 + ___ = 9 = 5 · 3 + ___ = 10 = 7 · 34 + ___ = 40 = 6 · 24 + ___ = 26 = 2 · 34 + ___ = 37 = 3 · 27 + ___ = 31 = 4 · 3 + ___ = 12 = 9 · 33 + ___ = 34 = 1
About this mystery
- Grade level
- Grade 7 math
- Math topics
- Rounding, Word problems, Integers, Percentages, Missing addends
- Reading level
- grades 7-9
- Theme
- The Mystery of the Sunken Temple — set in The Sunken Temple of Zun
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects