Grade 7Reading: grades 3-4IntegersPercentagesOrder of operationsExponentsTwo-step equations
The Golden Coconut Mystery
A rogue explorer has snatched the Golden Coconut from the Jungle Temple! You and your team of Junior Pathfinders must search Mount Canopy to find the thief before they escape on their glider.
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 | escape gear | special tool | paddling hand | fiber evidence | major fear |
|---|---|---|---|---|---|
| Mia | zipline glider | smoke bomb | left handed paddle | green cap thread | allergic to pollen |
| Cole | rope launcher | robo parrot | right handed paddle | green cap thread | fears spiders |
| Zoe | zipline glider | decoder lens | right handed paddle | yellow cap thread | hates mud |
| Eli | climbing claws | robo parrot | right handed paddle | green cap thread | fears spiders |
| Dan | climbing claws | robo parrot | right handed paddle | green cap thread | allergic to pollen |
| Eva | bamboo snorkel | robo parrot | left handed paddle | green cap thread | allergic to pollen |
| Lara | rope launcher | robo parrot | right handed paddle | blue cap thread | hates mud |
| Ruby | bamboo snorkel | flash whistle | right handed paddle | yellow cap thread | allergic to pollen |
| Ivy | zipline glider | robo parrot | left handed paddle | yellow cap thread | fears spiders |
| Ben | bamboo snorkel | smoke bomb | right handed paddle | green cap thread | hates mud |
| Gus | climbing claws | robo parrot | left handed paddle | green cap thread | allergic to pollen |
| Amy | bamboo snorkel | robo parrot | right handed paddle | green cap thread | allergic to pollen |
| Finn | grappling hook | flash whistle | left handed paddle | yellow cap thread | allergic to pollen |
| Toby | grappling hook | decoder lens | left handed paddle | green cap thread | allergic to pollen |
| Kai | bamboo snorkel | robo parrot | right handed paddle | blue cap thread | fears spiders |
| Mae | bamboo snorkel | pocket compass | left handed paddle | blue cap thread | allergic to pollen |
| Indy | bamboo snorkel | flash whistle | left handed paddle | green cap thread | allergic to pollen |
| Roy | climbing claws | smoke bomb | right handed paddle | green cap thread | fears spiders |
| Leo | bamboo snorkel | smoke bomb | left handed paddle | green cap thread | fears spiders |
| Max | rope launcher | decoder lens | right handed paddle | green cap thread | allergic to pollen |
| Rex | zipline glider | decoder lens | left handed paddle | green cap thread | fears spiders |
Clue 1
Integers
To unlock the temple gate, we must check the temperature gauge. It dips below zero at night. Look at the numbers to find the code.
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
28
4
23
T
28
4
24
23
8
17
3
23
16
2
3
T
28
12
16
23
26
16
30
3
22
23
18
3
30
18
(-13) + 41 =T
10 - (-6) =S
(-7) + 9 =N
(-5) + 13 =F
28 - (-2) =M
(-15) + 38 =E
(-10) + 28 =B
16 - (-10) =A
(-8) + 11 =O
(-10) + 14 =H
17 - (-7) =I
16 - (-6) =K
(-12) + 24 =U
12 - (-5) =D
0/14 letters found
Clue 2
Percentages
Your glider battery is dropping. We need to calculate how much power is left to fly across the deep canyon.
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
47
54
9
T
47
54
40
9
28
15
10
40
1
46
15
T
47
54
9
40
37
31
9
28
T
47
54
45
1
56
9
56
11
45
56
56
31
9
5% of 940 =T
20% of 280 =D
40% of 115 =G
25% of 60 =S
10% of 370 =R
25% of 44 =P
20% of 140 =F
5% of 200 =W
50% of 2 =N
5% of 800 =I
20% of 45 =E
75% of 60 =A
10% of 540 =H
25% of 124 =L
0/14 letters found
Clue 3
Order of operations
We found a locked treasure chest! To open it, we must solve the lock pins in the exact correct order of steps.
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
57
117
6
T
57
117
120
6
61
35
68
6
6
65
6
35
100
80
85
89
100
47
93
T
57
51
6
89
50
80
100
100
6
68
43 + 2 × 7 =T
76 + 2 × 2 =O
53 + 2 × 6 =Z
8 × 10 - 12 =N
53 + 8 × 5 =A
73 + 4 × 3 =U
8 × 10 - 29 =R
23 + 9 × 3 =P
66 + 6 × 9 =I
19 + 4 × 4 =S
12 + 7 × 7 =F
2 × 7 - 8 =E
27 + 4 × 5 =Y
77 + 4 × 3 =D
90 + 5 × 2 =L
11 × 11 - 4 =H
0/16 letters found
Clue 4
Exponents
The vines are growing faster and faster every minute! Calculate how many times they double to see how much time we have.
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
36
49
8
9
361
225
324
289
64
144
49
49
225
125
16
144
49
289
324
9
225
289
243
16
289
144
27
256
169
225
49
6^2 =W
2^8 =V
13^2 =I
5^3 =T
18^2 =D
2^6 =G
4^2 =H
12^2 =R
15^2 =N
2^3 =F
19^2 =U
17^2 =A
7^2 =E
3^2 =O
3^5 =S
3^3 =P
0/16 letters found
Clue 5
Two-step equations — the last clue
We need to balance the stone scales with gold coins and heavy bags to open the final secret door.
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
4x + 4 = 28, x = ?
3x + 1 = 10, x = ?
2x + 6 = 14, x = ?
4x + 11 = 43, x = ?
5x + 2 = 37, x = ?
5x + 3 = 8, x = ?
2x + 11 = 29, x = ?
6x + 9 = 69, x = ?
4x + 11 = 19, x = ?
5x + 5 = 65, x = ?
2x + 6 = 28, x = ?
Step 2 — cross out the sentence with each answer
1.The villain shot over the river using a rope launcher, then read a secret map with a decoder lens.
2.The villain swung over the canopy with a grappling hook, then checked their path with a pocket compass.
3.The villain scrambled up the giant trunk with climbing claws, then chatted with a robo parrot.
4.The villain swam downstream with a bamboo snorkel, then chatted with a robo parrot.
5.The villain swam downstream with a bamboo snorkel, then signaled their crew with a flash whistle.
6.The villain swung over the canopy with a grappling hook, then read a secret map with a decoder lens.
7.The villain shot over the river using a rope launcher, then checked their path with a pocket compass.
8.The villain swam downstream with a bamboo snorkel, then checked their path with a pocket compass.
9.The villain zoomed away on a zipline glider, then checked their path with a pocket compass.
10.The villain shot over the river using a rope launcher, then signaled their crew with a flash whistle.
11.The villain shot over the river using a rope launcher, then chatted with a robo parrot.
12.The villain zoomed away on a zipline glider, then blinded the guards with a smoke bomb.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Golden Coconut Mystery
Culprit: Indy (bamboo snorkel · flash whistle · left handed paddle · green cap thread · allergic to pollen)
- Clue 1 (Integers): "THE THIEF DOES NOT USE A SMOKE BOMB"(-13) + 41 = 28 (T) · 10 - (-6) = 16 (S) · (-7) + 9 = 2 (N) · (-5) + 13 = 8 (F) · 28 - (-2) = 30 (M) · (-15) + 38 = 23 (E) · (-10) + 28 = 18 (B) · 16 - (-10) = 26 (A) · (-8) + 11 = 3 (O) · (-10) + 14 = 4 (H) · 17 - (-7) = 24 (I) · 16 - (-6) = 22 (K) · (-12) + 24 = 12 (U) · 12 - (-5) = 17 (D)
- Clue 2 (Percentages): "THE THIEF SWINGS THEIR LEFT HANDED PADDLE"5% of 940 = 47 (T) · 20% of 280 = 56 (D) · 40% of 115 = 46 (G) · 25% of 60 = 15 (S) · 10% of 370 = 37 (R) · 25% of 44 = 11 (P) · 20% of 140 = 28 (F) · 5% of 200 = 10 (W) · 50% of 2 = 1 (N) · 5% of 800 = 40 (I) · 20% of 45 = 9 (E) · 75% of 60 = 45 (A) · 10% of 540 = 54 (H) · 25% of 124 = 31 (L)
- Clue 3 (Order of operations): "THE THIEF SNEEZES LOUDLY AT RED POLLEN"43 + 2 × 7 = 57 (T) · 76 + 2 × 2 = 80 (O) · 53 + 2 × 6 = 65 (Z) · 8 × 10 - 12 = 68 (N) · 53 + 8 × 5 = 93 (A) · 73 + 4 × 3 = 85 (U) · 8 × 10 - 29 = 51 (R) · 23 + 9 × 3 = 50 (P) · 66 + 6 × 9 = 120 (I) · 19 + 4 × 4 = 35 (S) · 12 + 7 × 7 = 61 (F) · 2 × 7 - 8 = 6 (E) · 27 + 4 × 5 = 47 (Y) · 77 + 4 × 3 = 89 (D) · 90 + 5 × 2 = 100 (L) · 11 × 11 - 4 = 117 (H)
- Clue 4 (Exponents): "WE FOUND A GREEN THREAD ON A SHARP VINE"6^2 = 36 (W) · 2^8 = 256 (V) · 13^2 = 169 (I) · 5^3 = 125 (T) · 18^2 = 324 (D) · 2^6 = 64 (G) · 4^2 = 16 (H) · 12^2 = 144 (R) · 15^2 = 225 (N) · 2^3 = 8 (F) · 19^2 = 361 (U) · 17^2 = 289 (A) · 7^2 = 49 (E) · 3^2 = 9 (O) · 3^5 = 243 (S) · 3^3 = 27 (P)
- Clue 5 (Two-step equations): surviving statement (box 5) → Indy4x + 4 = 28, x = 6 · 3x + 1 = 10, x = 3 · 2x + 6 = 14, x = 4 · 4x + 11 = 43, x = 8 · 5x + 2 = 37, x = 7 · 5x + 3 = 8, x = 1 · 2x + 11 = 29, x = 9 · 6x + 9 = 69, x = 10 · 4x + 11 = 19, x = 2 · 5x + 5 = 65, x = 12 · 2x + 6 = 28, x = 11
About this mystery
- Grade level
- Grade 7 math
- Math topics
- Integers, Percentages, Order of operations, Exponents, Two-step equations
- Reading level
- grades 3-4
- Theme
- The Golden Coconut Mystery — set in Mount Canopy Jungle
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects