Math Mysteries
Grade 7Reading: grades 7-9Fractions of a numberWord problemsIntegersPercentages

The Whispering Jungle Heist

The legendary Emerald Eye has been stolen from the Sunken Temple! A mysterious rogue snuck past the temple traps, snatched the relic, and vanished into the thick jungle canopy. We must examine the tracks, decode the temple archives, and bring the thief to justice before they escape the island.

Suspects

Possible suspects

Cross off a row as each clue rules it out. On screen, tap a row.

21 of 21 still in play
NameExplorer ToolRelic CarriedDominant HandStray Hair ColorSecret Fear
Shorty Roundclimbing spikesjade compassuses left handjet black hairallergic to pollen
Elena Crestclimbing spikesobsidian mirroruses right handdusty brown hairfears spiders
Rex Dasherdecoder ringjade compassuses left handbright red hairallergic to pollen
Gwen Stacydecoder ringsilver keyuses right handbright red hairallergic to pollen
Maya Thornedecoder ringgolden idoluses right handdusty brown hairallergic to pollen
Sully Canyongrappling hookjade compassuses left handdusty brown hairfears spiders
Sydney Foxclimbing spikesgolden idoluses left handdusty brown hairscared of bats
Chase Walkermachetesilver keyuses left handbright red hairfears spiders
Marion Ravensmoke bombsobsidian mirroruses right handjet black hairallergic to pollen
Brooke Havenclimbing spikesobsidian mirroruses right handjet black hairallergic to pollen
Henry Jonesclimbing spikesgolden idoluses right handdusty brown hairallergic to pollen
Zoe Cartergrappling hooksilver keyuses left handdusty brown hairallergic to pollen
Leo Sterlingdecoder ringjade compassuses right handdusty brown hairscared of bats
Arthur Pendeltonclimbing spikessilver keyuses left handjet black hairscared of bats
Indy Riversdecoder ringruby beetleuses right handdusty brown hairallergic to pollen
Rick Oconnellgrappling hookjade compassuses right handdusty brown hairallergic to pollen
Danny Questsmoke bombsobsidian mirroruses right handdusty brown hairallergic to pollen
Allan Sparksclimbing spikesjade compassuses right handbright red hairfears spiders
Evelyn Carnahangrappling hooksilver keyuses right handjet black hairscared of bats
Nathan Ridgemachetejade compassuses left handdusty brown hairallergic to pollen
Marcus Brodygrappling hookgolden idoluses right handbright red hairallergic to pollen
Clue 1

Fractions of a number

Our journey begins at the base camp, where we must calculate our survival gear weight. Solve these inventory word problems to unlock the first clue.

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
56
28
10
35
16
10
31
16
10
21
34
16
T
56
28
27
6
10
T
56
28
10
12
27
31
10
26
16
24
42
27
21
21
4/8 of 112 =T
4/6 of 42 =H
3/4 of 36 =A
6/8 of 32 =M
2/8 of 124 =D
3/6 of 68 =N
1/2 of 24 =J
2/10 of 30 =V
1/3 of 126 =P
2/8 of 64 =O
1/6 of 126 =S
1/3 of 78 =C
5/8 of 56 =F
5/10 of 20 =E
0/14 letters found
Clue 2

Word problems

We find a heavy chest of ancient copper coins left by the thief. A fraction of these coins belongs to our local guide. Solve the fractions to get the next clue.

Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.

Awitnesssawthevillainwas
U
31
120
26
120
93
27
100
63
T
 
63
A
 
N
 
D
 
.
There were 55 canteen. 24 were used up. How many canteen are left?U
Guide found 42 relic yesterday and 21 more today. How many relic in all?H
There were 114 torch. 14 were used up. How many torch are left?G
Guide found 3 backpack yesterday and 24 more today. How many backpack in all?I
Guide found 22 relic yesterday and 71 more today. How many relic in all?R
There were 141 relic. 21 were used up. How many relic are left?S
There were 34 relic. 8 were used up. How many relic are left?E
0/7 letters found
Clue 3

Integers

To navigate the underground tunnels, we must track our depth as we climb up and down the stone chambers. Track these positive and negative integers to move forward.

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
20
4
23
13
3
5
13
10
10
23
13
30
27
11
25
13
23
23
27
7
9
A
20
5
27
21
12
27
1
7
27
A
20
15
10
23
27
27
11 - (-9) =A
(-15) + 24 =M
4 - (-9) =O
(-15) + 18 =U
(-12) + 17 =D
(-11) + 21 =F
(-1) + 31 =W
12 - (-11) =L
(-4) + 16 =H
(-11) + 38 =E
(-1) + 5 =C
(-13) + 38 =P
10 - (-11) =T
(-3) + 14 =R
7 - (-8) =K
(-11) + 18 =N
(-3) + 4 =S
0/17 letters found
Clue 4

Percentages

The ancient solar door needs a specific percentage of light reflecting off our mirrors to trigger its mechanism. Calculate the percentages to reveal the fourth clue.

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
1
12
21
16
27
35
51
51
27
15
48
17
28
29
16
W
1
35
30
58
56
29
16
35
48
30
12
31
27
35
25
14
12
13
56
35
12
50% of 2 =W
5% of 500 =G
10% of 310 =J
25% of 204 =D
20% of 150 =H
50% of 56 =B
10% of 160 =O
75% of 36 =U
50% of 58 =R
25% of 56 =L
5% of 960 =T
25% of 140 =N
5% of 260 =V
10% of 120 =E
40% of 145 =A
20% of 85 =Y
10% of 150 =S
10% of 560 =I
75% of 28 =F
0/19 letters found
Clue 5

Fractions of a number — the last clue

We discover a pouch of glowing crystals dropped during the escape. Only a fraction of them still hold their elemental power. Figure out the fraction to unlock the final clue.

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
1/10 of 100 = ?
3/6 of 12 = ?
1/8 of 88 = ?
1/3 of 15 = ?
1/2 of 14 = ?
2/8 of 12 = ?
3/10 of 40 = ?
2/4 of 8 = ?
2/10 of 5 = ?
1/3 of 27 = ?
4/8 of 4 = ?
Step 2 — cross out the sentence with each answer
1.The villain unravels the ancient puzzle door using a decoder ring, then unlocks the sacred chamber with the silver key.
2.The villain blinds the temple guardians with smoke bombs, then unlocks the sacred chamber with the silver key.
3.The villain blinds the temple guardians with smoke bombs, then navigates the hidden maze using the jade compass.
4.The villain hacks through the thick vines with a machete, then snatches the golden idol from the altar.
5.The villain unravels the ancient puzzle door using a decoder ring, then navigates the hidden maze using the jade compass.
6.The villain scales the steep stone walls using climbing spikes, then snatches the golden idol from the altar.
7.The villain swings across the temple chasm with a grappling hook, then navigates the hidden maze using the jade compass.
8.The villain unravels the ancient puzzle door using a decoder ring, then snatches the golden idol from the altar.
9.The villain hacks through the thick vines with a machete, then unlocks the sacred chamber with the silver key.
10.The villain blinds the temple guardians with smoke bombs, then projects a blinding light from the obsidian mirror.
11.The villain unravels the ancient puzzle door using a decoder ring, then unleashes the swarm from the ruby beetle.
12.The villain scales the steep stone walls using climbing spikes, then navigates the hidden maze using the jade compass.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 7 math
Math topics
Fractions of a number, Word problems, Integers, Percentages
Reading level
grades 7-9
Theme
The Whispering Jungle Heist — set in The Sunken Temple of the Golden Monkey
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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