Grade 5Reading: grades 3-4Fractions of a numberOrder of operationsMultiplicationRoundingDivision
The Mystery of Skull Rock Temple
The Golden Idol has disappeared from the temple vault! Solve the math clues to discover which explorer took it.
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 | Explorer Tool | Pet Companion | Strap Side | Hat Type | Fear |
|---|---|---|---|---|---|
| Milo Marsh | Decoder Ring | Iguana | Right Shoulder Strap | Leather Cap | Loud Whistles |
| Rory River | Decoder Ring | Monkey | Right Shoulder Strap | Fedora | Bright Flashlights |
| Hana Hunter | Brass Compass | Parrot | Left Shoulder Strap | Fedora | Loud Whistles |
| Willa Wild | Decoder Ring | Gecko | Right Shoulder Strap | Fedora | Bright Flashlights |
| Leo Lumber | Map Scroll | Gecko | Right Shoulder Strap | Leather Cap | Loud Whistles |
| Finn Finder | Grappling Hook | Gecko | Right Shoulder Strap | Fedora | Bright Flashlights |
| Sienna Stone | Brass Compass | Fruit Bat | Left Shoulder Strap | Leather Cap | Bright Flashlights |
| Indiana Jax | Decoder Ring | Fruit Bat | Right Shoulder Strap | Pith Helmet | Loud Whistles |
| Gabe Gates | Torch Light | Fruit Bat | Right Shoulder Strap | Leather Cap | Bright Flashlights |
| Penny Path | Torch Light | Gecko | Right Shoulder Strap | Pith Helmet | Squeaking Mice |
| Pip Parker | Map Scroll | Parrot | Right Shoulder Strap | Leather Cap | Loud Whistles |
| Clara Cruz | Torch Light | Fruit Bat | Right Shoulder Strap | Leather Cap | Loud Whistles |
| Vince Vine | Grappling Hook | Iguana | Right Shoulder Strap | Fedora | Bright Flashlights |
| Sammy Swift | Grappling Hook | Monkey | Left Shoulder Strap | Leather Cap | Bright Flashlights |
| Nora Navigator | Decoder Ring | Fruit Bat | Left Shoulder Strap | Leather Cap | Loud Whistles |
| Bruno Bold | Grappling Hook | Monkey | Right Shoulder Strap | Fedora | Loud Whistles |
| Maya Mapes | Brass Compass | Iguana | Left Shoulder Strap | Leather Cap | Squeaking Mice |
| Toby Tunnel | Brass Compass | Gecko | Right Shoulder Strap | Leather Cap | Loud Whistles |
| Zack Zoom | Grappling Hook | Fruit Bat | Left Shoulder Strap | Leather Cap | Squeaking Mice |
| Quinn Trail | Brass Compass | Gecko | Right Shoulder Strap | Leather Cap | Squeaking Mice |
| Kira Keen | Grappling Hook | Fruit Bat | Right Shoulder Strap | Fedora | Squeaking Mice |
Clue 1
Fractions of a number
You count a fraction of the gold coins found in the chest to reveal your 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
12
38
9
8
3
9
37
15
26
25
34
40
40
37
34
3
10
23
9
8
3
23
T
12
38
37
25
9
37
3
34
5
14
37
3
37
1/3 of 36 =T
2/10 of 25 =G
3/4 of 20 =K
5/10 of 68 =I
4/8 of 76 =H
4/8 of 80 =L
4/8 of 74 =A
8/10 of 10 =S
1/5 of 130 =Y
1/8 of 24 =N
2/10 of 115 =O
3/6 of 50 =V
2/4 of 28 =U
3/6 of 20 =D
5/10 of 18 =E
0/15 letters found
Clue 2
Order of operations
You follow the step by step sequence on the stone wall to unlock the next secret.
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
49
79
48
12
T
22
78
79
68
68
78
15
T
22
12
80
79
75
14
45
12
8
49
T
22
68
49
15
23
62
75
79
45
68
T
22
45
14
13
4 × 9 - 14 =T
7 + 4 × 4 =U
73 + 2 × 3 =E
4 × 6 - 16 =G
26 + 4 × 9 =L
14 + 7 × 5 =H
3 + 3 × 3 =I
6 × 8 - 3 =R
1 + 4 × 3 =P
2 × 8 - 2 =A
3 + 3 × 4 =O
54 + 8 × 3 =N
8 × 9 - 4 =S
9 × 11 - 19 =C
11 × 5 - 7 =W
43 + 8 × 4 =D
0/16 letters found
Clue 3
Multiplication facts (1-12)
You multiply the rows of glowing gems on the temple door to figure out who left them.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
L
27
45
8
132
49
84
110
32
16
L
27
15
32
70
20
132
15
16
84
15
32
4
45
45
3
36
8
4
20
49
20
66
9 × 3 =L
12 × 3 =R
7 × 7 =W
4 × 4 =T
2 × 4 =U
4 × 8 =S
11 × 10 =I
3 × 1 =P
11 × 12 =D
7 × 12 =H
5 × 9 =O
3 × 5 =E
7 × 10 =M
2 × 10 =A
6 × 11 =Y
1 × 4 =N
0/16 letters found
Clue 4
Rounding
The ancient compass dial rounds the distance to the nearest benchmark number.
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
170
2300
70
A
170
20
9000
70
1700
370
A
170
5000
900
A
170
50
2300
70
110
20
A
170
20
20
9000
70
50
370
70
430
70
Round 173 to the nearest tenA
Round 431 to the nearest tenN
Round 2,258 to the nearest hundredL
Round 374 to the nearest tenC
Round 1,711 to the nearest hundredR
Round 113 to the nearest tenF
Round 52 to the nearest tenS
Round 21 to the nearest tenT
Round 922 to the nearest hundredW
Round 67 to the nearest tenE
Round 8,734 to the nearest thousandH
Round 5,402 to the nearest thousandP
0/12 letters found
Clue 5
Division facts (1-12) — the last clue
You split the food rations equally among your expedition team to uncover 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
36 ÷ 9 = ?
10 ÷ 1 = ?
14 ÷ 7 = ?
48 ÷ 6 = ?
44 ÷ 4 = ?
9 ÷ 3 = ?
36 ÷ 3 = ?
45 ÷ 5 = ?
6 ÷ 6 = ?
35 ÷ 7 = ?
63 ÷ 9 = ?
Step 2 — cross out the sentence with each answer
1.The villain used a decoder ring, then whistled to a parrot.
2.The villain checked a brass compass, then carried a small gecko.
3.The villain used a grappling hook, then fed a sneaky monkey.
4.The villain read a map scroll, then whistled to a parrot.
5.The villain lit a torch light, then fed a sneaky monkey.
6.The villain read a map scroll, then carried a small gecko.
7.The villain used a grappling hook, then whistled to a parrot.
8.The villain used a grappling hook, then signaled a fruit bat.
9.The villain read a map scroll, then petted a green iguana.
10.The villain lit a torch light, then signaled a fruit bat.
11.The villain checked a brass compass, then petted a green iguana.
12.The villain used a decoder ring, then fed a sneaky monkey.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of Skull Rock Temple
Culprit: Leo Lumber (Map Scroll · Gecko · Right Shoulder Strap · Leather Cap · Loud Whistles)
- Clue 1 (Fractions of a number): "THE SNEAKY VILLAIN DOES NOT HAVE AN IGUANA"1/3 of 36 = 12 (T) · 2/10 of 25 = 5 (G) · 3/4 of 20 = 15 (K) · 5/10 of 68 = 34 (I) · 4/8 of 76 = 38 (H) · 4/8 of 80 = 40 (L) · 4/8 of 74 = 37 (A) · 8/10 of 10 = 8 (S) · 1/5 of 130 = 26 (Y) · 1/8 of 24 = 3 (N) · 2/10 of 115 = 23 (O) · 3/6 of 50 = 25 (V) · 2/4 of 28 = 14 (U) · 3/6 of 20 = 10 (D) · 5/10 of 18 = 9 (E)
- Clue 2 (Order of operations): "THE WITNESS NOTICED A RIGHT SHOULDER STRAP"4 × 9 - 14 = 22 (T) · 7 + 4 × 4 = 23 (U) · 73 + 2 × 3 = 79 (E) · 4 × 6 - 16 = 8 (G) · 26 + 4 × 9 = 62 (L) · 14 + 7 × 5 = 49 (H) · 3 + 3 × 3 = 12 (I) · 6 × 8 - 3 = 45 (R) · 1 + 4 × 3 = 13 (P) · 2 × 8 - 2 = 14 (A) · 3 + 3 × 4 = 15 (O) · 54 + 8 × 3 = 78 (N) · 8 × 9 - 4 = 68 (S) · 9 × 11 - 19 = 80 (C) · 11 × 5 - 7 = 48 (W) · 43 + 8 × 4 = 75 (D)
- Clue 3 (Multiplication facts (1-12)): "LOUD WHISTLES MADE THE SNOOP RUN AWAY"9 × 3 = 27 (L) · 12 × 3 = 36 (R) · 7 × 7 = 49 (W) · 4 × 4 = 16 (T) · 2 × 4 = 8 (U) · 4 × 8 = 32 (S) · 11 × 10 = 110 (I) · 3 × 1 = 3 (P) · 11 × 12 = 132 (D) · 7 × 12 = 84 (H) · 5 × 9 = 45 (O) · 3 × 5 = 15 (E) · 7 × 10 = 70 (M) · 2 × 10 = 20 (A) · 6 × 11 = 66 (Y) · 1 × 4 = 4 (N)
- Clue 4 (Rounding): "A LEATHER CAP WAS LEFT AT THE SCENE"Round 173 to the nearest ten = 170 (A) · Round 431 to the nearest ten = 430 (N) · Round 2,258 to the nearest hundred = 2300 (L) · Round 374 to the nearest ten = 370 (C) · Round 1,711 to the nearest hundred = 1700 (R) · Round 113 to the nearest ten = 110 (F) · Round 52 to the nearest ten = 50 (S) · Round 21 to the nearest ten = 20 (T) · Round 922 to the nearest hundred = 900 (W) · Round 67 to the nearest ten = 70 (E) · Round 8,734 to the nearest thousand = 9000 (H) · Round 5,402 to the nearest thousand = 5000 (P)
- Clue 5 (Division facts (1-12)): surviving statement (box 6) → Leo Lumber36 ÷ 9 = 4 · 10 ÷ 1 = 10 · 14 ÷ 7 = 2 · 48 ÷ 6 = 8 · 44 ÷ 4 = 11 · 9 ÷ 3 = 3 · 36 ÷ 3 = 12 · 45 ÷ 5 = 9 · 6 ÷ 6 = 1 · 35 ÷ 7 = 5 · 63 ÷ 9 = 7
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 Mystery of Skull Rock Temple — set in Skull Rock Island
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects