Grade 5Reading: grades 3-4Fractions of a numberOrder of operationsMultiplicationRoundingDivision
The Lost Idol of Serpent Canopy
A mysterious temple bandit swiped the golden idol from the camp vault! Detective, search the dense jungle and gather clues to catch the thief.
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 | Main Skill | Special Gear | Carried Item | Headgear | Stopping Tool |
|---|---|---|---|---|---|
| Caleb | grapple hook | boulder roll | map pouch | pith helmet | loud whistle |
| Elena | grapple hook | boulder roll | compass watch | jungle goggles | bright mirrors |
| Maya | vine swing | sonar whistle | map pouch | pith helmet | sticky resin |
| Ruby | compass dash | torch flare | compass watch | red bandana | sticky resin |
| Zoe | grapple hook | decoy dart | compass watch | pith helmet | bright mirrors |
| Lucas | smoke bomb | sonar whistle | map pouch | red bandana | sticky resin |
| Jax | smoke bomb | sonar whistle | map pouch | pith helmet | sticky resin |
| Kai | vine swing | torch flare | map pouch | red bandana | loud whistle |
| Ava | vine swing | torch flare | compass watch | red bandana | loud whistle |
| Nora | grapple hook | sonar whistle | compass watch | red bandana | bright mirrors |
| Sam | grapple hook | boulder roll | map pouch | jungle goggles | sticky resin |
| Noah | vine swing | boulder roll | compass watch | pith helmet | sticky resin |
| Ethan | vine swing | sonar whistle | compass watch | pith helmet | loud whistle |
| Oliver | smoke bomb | glider wing | compass watch | jungle goggles | sticky resin |
| Mason | mud slide | decoy dart | compass watch | pith helmet | loud whistle |
| Logan | mud slide | glider wing | map pouch | pith helmet | loud whistle |
| Sofia | vine swing | decoy dart | map pouch | pith helmet | sticky resin |
| Liam | smoke bomb | torch flare | map pouch | pith helmet | sticky resin |
| Leo | mud slide | boulder roll | compass watch | red bandana | bright mirrors |
| Isla | compass dash | sonar whistle | map pouch | jungle goggles | sticky resin |
| Mateo | smoke bomb | decoy dart | map pouch | pith helmet | sticky resin |
Clue 1
Fractions of a number
The team checks a fraction of the supply crates to locate 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
28
13
18
12
17
35
4
7
T
28
4
27
18
39
35
27
T
28
29
39
18
17
T
28
27
10
25
13
5
8
17
10
18
4/10 of 70 =T
3/5 of 30 =E
4/6 of 6 =D
1/10 of 130 =H
2/8 of 100 =C
2/10 of 195 =S
2/10 of 50 =R
3/6 of 70 =N
1/2 of 34 =A
1/8 of 96 =B
2/8 of 28 =I
1/3 of 87 =U
2/6 of 81 =O
2/4 of 10 =F
5/10 of 16 =L
0/15 letters found
Clue 2
Order of operations
A notebook has multi-step rules that must be solved in order to decode the trail.
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
27
37
43
T
27
25
16
14
75
70
70
37
38
63
16
69
16
17
17
38
49
14
37
63
16
70
14
16
25
25
55
43
31
5 × 8 - 13 =T
10 × 2 - 4 =A
7 × 5 - 4 =D
15 + 9 × 6 =M
10 × 9 - 27 =W
20 + 6 × 3 =O
2 + 5 × 3 =P
4 × 9 - 11 =R
9 × 8 - 2 =S
5 × 10 - 7 =E
54 + 7 × 3 =K
31 + 2 × 9 =U
22 + 3 × 5 =H
4 + 2 × 5 =C
39 + 2 × 8 =I
0/15 letters found
Clue 3
Multiplication facts (1-12)
The expedition counts gear packed in equal rows inside the storage tent.
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
81
90
27
63
25
110
9
T
81
T
81
7
4
88
88
27
100
T
81
90
27
20
56
4
T
81
90
63
T
81
4
25
30
5
7
27
63
4
49
9 × 9 =T
2 × 10 =M
9 × 1 =U
3 × 10 =K
7 × 9 =S
7 × 7 =N
11 × 10 =O
8 × 7 =W
10 × 10 =D
5 × 5 =C
4 × 1 =I
9 × 3 =E
5 × 1 =Y
1 × 7 =R
8 × 11 =P
9 × 10 =H
0/16 letters found
Clue 4
Rounding
An altimeter readout is worn out and only shows rounded altitude numbers.
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
30
700
290
2300
110
110
2900
5000
430
2900
2300
4300
20
170
A
30
2300
20
110
2900
370
2300
110
2900
2300
170
2900
2900
90
A
30
170
7000
Round 27 to the nearest tenA
Round 6,897 to the nearest thousandK
Round 287 to the nearest tenI
Round 90 to the nearest tenB
Round 2,944 to the nearest hundredE
Round 4,343 to the nearest hundredS
Round 167 to the nearest tenR
Round 434 to the nearest tenM
Round 2,284 to the nearest hundredT
Round 19 to the nearest tenC
Round 114 to the nearest tenH
Round 5,384 to the nearest thousandL
Round 371 to the nearest tenD
Round 693 to the nearest hundredP
0/14 letters found
Clue 5
Division facts (1-12) — the last clue
The camp chief divides rescue ropes equally among the search parties.
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
6 ÷ 1 = ?
30 ÷ 3 = ?
6 ÷ 3 = ?
35 ÷ 7 = ?
44 ÷ 11 = ?
88 ÷ 11 = ?
27 ÷ 9 = ?
33 ÷ 3 = ?
14 ÷ 2 = ?
2 ÷ 2 = ?
108 ÷ 12 = ?
Step 2 — cross out the sentence with each answer
1.The villain made a compass dash, then shot a decoy dart.
2.The villain swung on a vine, then blew a sonar whistle.
3.The villain fired a grapple hook, then triggered a boulder roll.
4.The villain swung on a vine, then deployed a glider wing.
5.The villain dropped a smoke bomb, then deployed a glider wing.
6.The villain dropped a smoke bomb, then blew a sonar whistle.
7.The villain executed a mud slide, then lit a torch flare.
8.The villain made a compass dash, then lit a torch flare.
9.The villain fired a grapple hook, then lit a torch flare.
10.The villain swung on a vine, then shot a decoy dart.
11.The villain executed a mud slide, then triggered a boulder roll.
12.The villain dropped a smoke bomb, then shot a decoy dart.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Lost Idol of Serpent Canopy
Culprit: Mateo (smoke bomb · decoy dart · map pouch · pith helmet · sticky resin)
- Clue 1 (Fractions of a number): "THE BANDIT DOES NOT USE A TORCH FLARE"4/10 of 70 = 28 (T) · 3/5 of 30 = 18 (E) · 4/6 of 6 = 4 (D) · 1/10 of 130 = 13 (H) · 2/8 of 100 = 25 (C) · 2/10 of 195 = 39 (S) · 2/10 of 50 = 10 (R) · 3/6 of 70 = 35 (N) · 1/2 of 34 = 17 (A) · 1/8 of 96 = 12 (B) · 2/8 of 28 = 7 (I) · 1/3 of 87 = 29 (U) · 2/6 of 81 = 27 (O) · 2/4 of 10 = 5 (F) · 5/10 of 16 = 8 (L)
- Clue 2 (Order of operations): "THE TRACKS SHOW A MAP POUCH WAS CARRIED"5 × 8 - 13 = 27 (T) · 10 × 2 - 4 = 16 (A) · 7 × 5 - 4 = 31 (D) · 15 + 9 × 6 = 69 (M) · 10 × 9 - 27 = 63 (W) · 20 + 6 × 3 = 38 (O) · 2 + 5 × 3 = 17 (P) · 4 × 9 - 11 = 25 (R) · 9 × 8 - 2 = 70 (S) · 5 × 10 - 7 = 43 (E) · 54 + 7 × 3 = 75 (K) · 31 + 2 × 9 = 49 (U) · 22 + 3 × 5 = 37 (H) · 4 + 2 × 5 = 14 (C) · 39 + 2 × 8 = 55 (I)
- Clue 3 (Multiplication facts (1-12)): "THE SCOUT TRIPPED THEM WITH STICKY RESIN"9 × 9 = 81 (T) · 2 × 10 = 20 (M) · 9 × 1 = 9 (U) · 3 × 10 = 30 (K) · 7 × 9 = 63 (S) · 7 × 7 = 49 (N) · 11 × 10 = 110 (O) · 8 × 7 = 56 (W) · 10 × 10 = 100 (D) · 5 × 5 = 25 (C) · 4 × 1 = 4 (I) · 9 × 3 = 27 (E) · 5 × 1 = 5 (Y) · 1 × 7 = 7 (R) · 8 × 11 = 88 (P) · 9 × 10 = 90 (H)
- Clue 4 (Rounding): "A PITH HELMET SCRATCHED THE TREE BARK"Round 27 to the nearest ten = 30 (A) · Round 6,897 to the nearest thousand = 7000 (K) · Round 287 to the nearest ten = 290 (I) · Round 90 to the nearest ten = 90 (B) · Round 2,944 to the nearest hundred = 2900 (E) · Round 4,343 to the nearest hundred = 4300 (S) · Round 167 to the nearest ten = 170 (R) · Round 434 to the nearest ten = 430 (M) · Round 2,284 to the nearest hundred = 2300 (T) · Round 19 to the nearest ten = 20 (C) · Round 114 to the nearest ten = 110 (H) · Round 5,384 to the nearest thousand = 5000 (L) · Round 371 to the nearest ten = 370 (D) · Round 693 to the nearest hundred = 700 (P)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Mateo6 ÷ 1 = 6 · 30 ÷ 3 = 10 · 6 ÷ 3 = 2 · 35 ÷ 7 = 5 · 44 ÷ 11 = 4 · 88 ÷ 11 = 8 · 27 ÷ 9 = 3 · 33 ÷ 3 = 11 · 14 ÷ 2 = 7 · 2 ÷ 2 = 1 · 108 ÷ 12 = 9
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Fractions of a number, Order of operations, Multiplication, Rounding, Division
- Reading level
- grades 3-4
- Theme
- The Lost Idol of Serpent Canopy — set in Serpent Canopy Jungle
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects