Grade 4Reading: grades 5-6MultiplicationFractions of a numberMulti-step word problemsWord problemsDivision
The Case of the Missing Jade Monkey
The sacred Jade Monkey has been stolen from the golden pedestal in the temple! Chief Archaeologist Dr. Jones was left tied up in vine ropes. We must search the base camp and decode the clues to find out which rogue explorer did 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 | primary gear | special skill | writing hand | hat style | feared trap |
|---|---|---|---|---|---|
| Chloe Frazer | grappling hook | vine swinging | right handed | feathered fedora | falling nets |
| Sacagawea | heavy machete | map decoding | right handed | feathered fedora | poison darts |
| Indiana Jones | golden compass | map decoding | left handed | safari helmet | falling nets |
| Evelyn Carnahan | golden compass | animal mimicking | right handed | safari helmet | poison darts |
| Steve Irwin | pocket lantern | animal mimicking | right handed | crimson bandana | falling nets |
| Percy Fawcett | brass spyglass | animal mimicking | right handed | safari helmet | poison darts |
| Mary Anning | brass spyglass | map decoding | right handed | safari helmet | rolling boulders |
| Clara Oswald | brass spyglass | trap disarming | right handed | crimson bandana | rolling boulders |
| Benjamin Gates | golden compass | vine swinging | right handed | feathered fedora | falling nets |
| Roy Chapman | grappling hook | trap disarming | left handed | crimson bandana | poison darts |
| Allan Quatermain | golden compass | trap disarming | right handed | safari helmet | falling nets |
| Jacques Cousteau | grappling hook | vine swinging | right handed | feathered fedora | rolling boulders |
| Sully Sullivan | golden compass | vine swinging | right handed | crimson bandana | rolling boulders |
| Elena Fisher | heavy machete | trap disarming | left handed | safari helmet | falling nets |
| River Song | golden compass | animal mimicking | right handed | safari helmet | falling nets |
| Lara Croft | grappling hook | ruin climbing | left handed | feathered fedora | falling nets |
| Nathan Drake | heavy machete | animal mimicking | right handed | safari helmet | falling nets |
| Nellie Bly | golden compass | map decoding | left handed | crimson bandana | falling nets |
| Danny Temple | pocket lantern | animal mimicking | right handed | safari helmet | falling nets |
| Jack Wilder | grappling hook | vine swinging | right handed | safari helmet | falling nets |
| Amelia Earhart | golden compass | ruin climbing | left handed | feathered fedora | poison darts |
Clue 1
Multiplication facts (1-12)
We checked the gear tents, counting several neat rows of expedition crates to verify what was stolen.
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
40
21
84
100
30
1
1
45
30
70
49
90
84
50
70
90
T
40
49
30
50
45
22
24
T
40
22
45
2
50
8 × 5 =T
9 × 5 =A
2 × 11 =R
10 × 10 =V
3 × 8 =M
10 × 7 =N
7 × 7 =D
3 × 7 =H
10 × 9 =O
2 × 1 =P
12 × 7 =E
6 × 5 =I
1 × 1 =L
5 × 10 =S
0/14 letters found
Clue 2
Fractions of a number
Our guide found a torn journal page, but we could only read a fraction of the muddy lines.
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
40
33
7
13
29
38
32
3
18
7
16
34
5
T
40
7
3
32
13
3
38
28
T
40
T
40
7
34
38
28
39
33
T
40
33
32
34
16
7
16
4/10 of 100 =T
7/10 of 10 =E
7/8 of 32 =I
1/2 of 10 =O
2/4 of 64 =A
2/4 of 68 =N
2/6 of 87 =C
1/10 of 180 =L
2/8 of 156 =G
4/6 of 57 =R
2/6 of 99 =H
1/10 of 30 =W
1/5 of 80 =D
1/5 of 65 =S
0/14 letters found
Clue 3
Multi-step word problems
To reach the inner chamber, we had to carefully calculate each step forward and backward to avoid the floor plates.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Someonescaredthevillainoffwith .
F
37
44
72
72
25
6
32
6
11
T
S
There were 364 brass compasses in all. 31 brass compasses were set aside. The rest were shared equally among 9 Pathfinders. How many brass compasses did each get?F
Explorer collected 8 ancient coins in the morning and 4 ancient coins in the afternoon, then split them equally among 2 Pathfinders. How many ancient coins did each get?N
Explorer filled 4 boxes with 4 stone idols each, then found 28 more stone idols. How many stone idols are there in all?A
Explorer earned 3 climbing ropes in each of 3 rounds, plus 12 bonus climbing ropes. Then 10 climbing ropes were lost. How many climbing ropes are left?E
Explorer filled 6 boxes with 4 ancient coins each, then found 48 more ancient coins. How many ancient coins are there in all?L
Explorer earned 5 ancient coins in each of 4 rounds, plus 12 bonus ancient coins. Then 7 ancient coins were lost. How many ancient coins are left?I
Explorer earned 7 map scrolls in each of 3 rounds, plus 16 bonus map scrolls. Then 5 map scrolls were lost. How many map scrolls are left?G
0/7 letters found
Clue 4
Word problems
We encountered a heavy stone door that would only open if we placed the correct weight on the pedestal.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Astrandof hairturnedupatthescene.
S
76
65
52
65
38
72
60
34
L
M
34
T
There were 91 climbing ropes. 15 were used up. How many climbing ropes are left?S
Explorer found 60 ancient coins yesterday and 5 more today. How many ancient coins in all?A
Explorer found 5 climbing ropes yesterday and 47 more today. How many climbing ropes in all?F
Explorer found 8 brass compasses yesterday and 26 more today. How many brass compasses in all?E
Explorer lined up 6 rows of 10 ancient coins. How many ancient coins in all?H
There were 104 climbing ropes. 32 were used up. How many climbing ropes are left?I
Explorer found 2 stone idols yesterday and 36 more today. How many stone idols in all?R
0/7 letters found
Clue 5
Division facts (1-12) — the last clue
Before heading into the dark ravine, we divided our remaining torches equally among the search teams.
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
7 ÷ 1 = ?
54 ÷ 6 = ?
50 ÷ 5 = ?
96 ÷ 12 = ?
30 ÷ 6 = ?
9 ÷ 9 = ?
14 ÷ 7 = ?
66 ÷ 6 = ?
144 ÷ 12 = ?
18 ÷ 6 = ?
12 ÷ 2 = ?
Step 2 — cross out the sentence with each answer
1.The villain lit the dark stone hallway with a pocket lantern, then sneaked past by trap disarming.
2.The villain checked their bearings with a golden compass, then paused for map decoding.
3.The villain lit the dark stone hallway with a pocket lantern, then paused for map decoding.
4.The villain lit the dark stone hallway with a pocket lantern, then distracted the guards by animal mimicking.
5.The villain slashed through the thick brush with a heavy machete, then sneaked past by trap disarming.
6.The villain slashed through the thick brush with a heavy machete, then paused for map decoding.
7.The villain slashed through the thick brush with a heavy machete, then distracted the guards by animal mimicking.
8.The villain scanned the horizon with a brass spyglass, then scaled the wall by ruin climbing.
9.The villain swung across the chasm with a grappling hook, then escaped by vine swinging.
10.The villain checked their bearings with a golden compass, then distracted the guards by animal mimicking.
11.The villain checked their bearings with a golden compass, then sneaked past by trap disarming.
12.The villain scanned the horizon with a brass spyglass, then paused for map decoding.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Jade Monkey
Culprit: Danny Temple (pocket lantern · animal mimicking · right handed · safari helmet · falling nets)
- Clue 1 (Multiplication facts (1-12)): "THE VILLAIN DOES NOT DISARM TRAPS"8 × 5 = 40 (T) · 9 × 5 = 45 (A) · 2 × 11 = 22 (R) · 10 × 10 = 100 (V) · 3 × 8 = 24 (M) · 10 × 7 = 70 (N) · 7 × 7 = 49 (D) · 3 × 7 = 21 (H) · 10 × 9 = 90 (O) · 2 × 1 = 2 (P) · 12 × 7 = 84 (E) · 6 × 5 = 30 (I) · 1 × 1 = 1 (L) · 5 × 10 = 50 (S)
- Clue 2 (Fractions of a number): "THE SCRAWLED NOTE WAS WRITTEN RIGHT HANDED"4/10 of 100 = 40 (T) · 7/10 of 10 = 7 (E) · 7/8 of 32 = 28 (I) · 1/2 of 10 = 5 (O) · 2/4 of 64 = 32 (A) · 2/4 of 68 = 34 (N) · 2/6 of 87 = 29 (C) · 1/10 of 180 = 18 (L) · 2/8 of 156 = 39 (G) · 4/6 of 57 = 38 (R) · 2/6 of 99 = 33 (H) · 1/10 of 30 = 3 (W) · 1/5 of 80 = 16 (D) · 1/5 of 65 = 13 (S)
- Clue 3 (Multi-step word problems): "FALLING NETS"There were 364 brass compasses in all. 31 brass compasses were set aside. The rest were shared equally among 9 Pathfinders. How many brass compasses did each get? = 37 (F) · Explorer collected 8 ancient coins in the morning and 4 ancient coins in the afternoon, then split them equally among 2 Pathfinders. How many ancient coins did each get? = 6 (N) · Explorer filled 4 boxes with 4 stone idols each, then found 28 more stone idols. How many stone idols are there in all? = 44 (A) · Explorer earned 3 climbing ropes in each of 3 rounds, plus 12 bonus climbing ropes. Then 10 climbing ropes were lost. How many climbing ropes are left? = 11 (E) · Explorer filled 6 boxes with 4 ancient coins each, then found 48 more ancient coins. How many ancient coins are there in all? = 72 (L) · Explorer earned 5 ancient coins in each of 4 rounds, plus 12 bonus ancient coins. Then 7 ancient coins were lost. How many ancient coins are left? = 25 (I) · Explorer earned 7 map scrolls in each of 3 rounds, plus 16 bonus map scrolls. Then 5 map scrolls were lost. How many map scrolls are left? = 32 (G)
- Clue 4 (Word problems): "SAFARI HELMET"There were 91 climbing ropes. 15 were used up. How many climbing ropes are left? = 76 (S) · Explorer found 60 ancient coins yesterday and 5 more today. How many ancient coins in all? = 65 (A) · Explorer found 5 climbing ropes yesterday and 47 more today. How many climbing ropes in all? = 52 (F) · Explorer found 8 brass compasses yesterday and 26 more today. How many brass compasses in all? = 34 (E) · Explorer lined up 6 rows of 10 ancient coins. How many ancient coins in all? = 60 (H) · There were 104 climbing ropes. 32 were used up. How many climbing ropes are left? = 72 (I) · Explorer found 2 stone idols yesterday and 36 more today. How many stone idols in all? = 38 (R)
- Clue 5 (Division facts (1-12)): surviving statement (box 4) → Danny Temple7 ÷ 1 = 7 · 54 ÷ 6 = 9 · 50 ÷ 5 = 10 · 96 ÷ 12 = 8 · 30 ÷ 6 = 5 · 9 ÷ 9 = 1 · 14 ÷ 7 = 2 · 66 ÷ 6 = 11 · 144 ÷ 12 = 12 · 18 ÷ 6 = 3 · 12 ÷ 2 = 6
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Multiplication, Fractions of a number, Multi-step word problems, Word problems, Division
- Reading level
- grades 5-6
- Theme
- The Case of the Missing Jade Monkey — set in Temple of the Sun in the Deep Whisper Jungle
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects