Grade 4Reading: grades 1-2Place valueMultiplicationWord problemsFractions of a number
The Treehouse Map Mystery
Someone snuck into the camp treehouse and took the golden trail map! The Head Scout needs your detective skills to follow the clues and catch the Map Snatcher.
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 Gear | Special Tool | Bandana Color | Hair Style | Camp Trick |
|---|---|---|---|---|---|
| Scout Ivy | Smoke Bomb | Pocket Radio | Red Bandana | Curly Hair | Whistle Blast |
| Scout Noah | Compass Lock | Camouflage Net | Red Bandana | Spiky Hair | Squeaky Toy |
| Scout Lily | Compass Lock | Pocket Radio | Red Bandana | Braided Hair | Squeaky Toy |
| Scout Sam | Flashlight | Pocket Radio | Red Bandana | Spiky Hair | Whistle Blast |
| Scout Max | Glider Wings | Camouflage Net | Blue Bandana | Spiky Hair | Squeaky Toy |
| Scout Ella | Smoke Bomb | Rope Ladder | Red Bandana | Braided Hair | Squeaky Toy |
| Scout Leo | Glider Wings | Pocket Radio | Blue Bandana | Curly Hair | Whistle Blast |
| Scout Zoe | Grappling Hook | Pocket Radio | Blue Bandana | Spiky Hair | Squeaky Toy |
| Scout Mia | Smoke Bomb | Rope Ladder | Blue Bandana | Spiky Hair | Whistle Blast |
| Scout Finn | Grappling Hook | Pocket Radio | Red Bandana | Braided Hair | Whistle Blast |
| Scout Kai | Grappling Hook | Pocket Radio | Blue Bandana | Braided Hair | Whistle Blast |
| Scout Grace | Compass Lock | Camp Whistle | Red Bandana | Spiky Hair | Whistle Blast |
| Scout Chloe | Smoke Bomb | Camp Whistle | Blue Bandana | Spiky Hair | Squeaky Toy |
| Scout Nora | Flashlight | Signal Flare | Blue Bandana | Spiky Hair | Mirror Flash |
| Scout Ava | Grappling Hook | Signal Flare | Blue Bandana | Braided Hair | Mirror Flash |
| Scout Jack | Compass Lock | Camouflage Net | Blue Bandana | Spiky Hair | Squeaky Toy |
| Scout Owen | Smoke Bomb | Pocket Radio | Blue Bandana | Braided Hair | Whistle Blast |
| Scout Luke | Glider Wings | Signal Flare | Blue Bandana | Braided Hair | Squeaky Toy |
| Scout Ezra | Compass Lock | Camp Whistle | Red Bandana | Spiky Hair | Squeaky Toy |
| Scout Hazel | Flashlight | Rope Ladder | Blue Bandana | Spiky Hair | Squeaky Toy |
| Scout Ben | Flashlight | Camp Whistle | Blue Bandana | Braided Hair | Whistle Blast |
Clue 1
Place value
The treehouse digital lock shows numbers in tens and ones. Solve the place value puzzle to get Clue 1.
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
2000
900
9000
500
3000
3000
8000
500
5000
800
90
900
70
5000
90
T
40
2000
8000
9000
900
8000
7000
90
4000
50
900
T
40
60
8000
800
500
90
What is the value of the 4 in 649?T
What is the value of the 9 in 922?E
What is the value of the 9 in 39,041?V
What is the value of the 5 in 511?I
What is the value of the 3 in 73,160?L
What is the value of the 7 in 8,578?S
What is the value of the 8 in 814?D
What is the value of the 6 in 2,263?R
What is the value of the 5 in 952?K
What is the value of the 7 in 67,146?P
What is the value of the 8 in 8,660?A
What is the value of the 9 in 596?O
What is the value of the 5 in 5,678?N
What is the value of the 4 in 24,118?C
What is the value of the 2 in 82,731?H
0/15 letters found
Clue 2
Multiplication facts (1-12)
Scout trail maps are packed in equal rows inside the supply chest. Multiply the rows to reveal Clue 2.
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
45
5
12
33
40
33
99
12
20
T
45
27
54
64
12
15
10
72
40
12
10
15
81
49
15
81
15
5 × 9 =T
9 × 9 =N
8 × 8 =R
6 × 12 =L
7 × 7 =D
5 × 3 =A
3 × 9 =W
3 × 11 =S
2 × 5 =B
3 × 4 =E
1 × 5 =H
5 × 8 =U
5 × 4 =C
9 × 11 =P
9 × 6 =O
0/15 letters found
Clue 3
Word problems
The Head Scout left a story problem about adventure gear. Solve the word problem to uncover Clue 3.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Someonescaredthevillainoffwith .
S
74
54
64
58
70
71
12
T
O
12
Scout Leader found 43 gold coin yesterday and 31 more today. How many gold coin in all?S
There were 81 wooden badge. 10 were used up. How many wooden badge are left?K
There were 98 gold coin. 40 were used up. How many gold coin are left?E
Scout Leader lined up 10 rows of 7 scout compass. How many scout compass in all?A
There were 77 scout compass. 13 were used up. How many scout compass are left?U
Scout Leader lined up 9 rows of 6 gold coin. How many gold coin in all?Q
Scout Leader lined up 2 rows of 6 wooden badge. How many wooden badge in all?Y
0/7 letters found
Clue 4
Fractions of a number
A set of camp compasses was shared among the teams. Find the fraction of compasses to unlock Clue 4.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
S
39
5
24
14
30
18
40
24
35
S
39
23
35
40
3
21
S
39
36
34
35
34
29
3
23
18
34
22
34
3
10
18
3/4 of 52 =S
1/5 of 15 =N
2/4 of 36 =H
4/10 of 35 =K
5/10 of 70 =R
1/10 of 50 =P
3/6 of 60 =Y
2/5 of 90 =W
2/6 of 66 =B
1/3 of 102 =E
4/8 of 42 =D
2/8 of 160 =A
1/2 of 46 =T
1/5 of 50 =C
4/8 of 58 =O
2/6 of 72 =I
0/16 letters found
Clue 5
Fractions of a number — the last clue
The secret trail badges were split into equal parts. Calculate the fraction to get Clue 5.
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
1/2 of 8 = ?
2/10 of 40 = ?
2/4 of 24 = ?
2/4 of 18 = ?
1/2 of 12 = ?
2/6 of 30 = ?
2/8 of 8 = ?
1/6 of 42 = ?
2/4 of 6 = ?
3/6 of 22 = ?
5/6 of 6 = ?
Step 2 — cross out the sentence with each answer
1.The villain shined a bright light through the dark, then escaped up a tall rope ladder.
2.The villain soared off the cliff on glider wings, then blew a loud camp whistle.
3.The villain soared off the cliff on glider wings, then escaped up a tall rope ladder.
4.The villain unlocked the vault with a master compass, then hid under a leafy camo net.
5.The villain soared off the cliff on glider wings, then launched a bright signal flare.
6.The villain vanished behind a cloud of smoke, then chattered on a pocket radio.
7.The villain unlocked the vault with a master compass, then chattered on a pocket radio.
8.The villain vanished behind a cloud of smoke, then blew a loud camp whistle.
9.The villain vanished behind a cloud of smoke, then escaped up a tall rope ladder.
10.The villain shined a bright light through the dark, then launched a bright signal flare.
11.The villain unlocked the vault with a master compass, then launched a bright signal flare.
12.The villain soared off the cliff on glider wings, then hid under a leafy camo net.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Treehouse Map Mystery
Culprit: Scout Hazel (Flashlight · Rope Ladder · Blue Bandana · Spiky Hair · Squeaky Toy)
- Clue 1 (Place value): "THE VILLAIN DOES NOT HAVE A POCKET RADIO"What is the value of the 4 in 649? = 40 (T) · What is the value of the 9 in 922? = 900 (E) · What is the value of the 9 in 39,041? = 9000 (V) · What is the value of the 5 in 511? = 500 (I) · What is the value of the 3 in 73,160? = 3000 (L) · What is the value of the 7 in 8,578? = 70 (S) · What is the value of the 8 in 814? = 800 (D) · What is the value of the 6 in 2,263? = 60 (R) · What is the value of the 5 in 952? = 50 (K) · What is the value of the 7 in 67,146? = 7000 (P) · What is the value of the 8 in 8,660? = 8000 (A) · What is the value of the 9 in 596? = 90 (O) · What is the value of the 5 in 5,678? = 5000 (N) · What is the value of the 4 in 24,118? = 4000 (C) · What is the value of the 2 in 82,731? = 2000 (H)
- Clue 2 (Multiplication facts (1-12)): "THE SUSPECT WORE A BLUE BANDANA"5 × 9 = 45 (T) · 9 × 9 = 81 (N) · 8 × 8 = 64 (R) · 6 × 12 = 72 (L) · 7 × 7 = 49 (D) · 5 × 3 = 15 (A) · 3 × 9 = 27 (W) · 3 × 11 = 33 (S) · 2 × 5 = 10 (B) · 3 × 4 = 12 (E) · 1 × 5 = 5 (H) · 5 × 8 = 40 (U) · 5 × 4 = 20 (C) · 9 × 11 = 99 (P) · 9 × 6 = 54 (O)
- Clue 3 (Word problems): "SQUEAKY TOY"Scout Leader found 43 gold coin yesterday and 31 more today. How many gold coin in all? = 74 (S) · There were 81 wooden badge. 10 were used up. How many wooden badge are left? = 71 (K) · There were 98 gold coin. 40 were used up. How many gold coin are left? = 58 (E) · Scout Leader lined up 10 rows of 7 scout compass. How many scout compass in all? = 70 (A) · There were 77 scout compass. 13 were used up. How many scout compass are left? = 64 (U) · Scout Leader lined up 9 rows of 6 gold coin. How many gold coin in all? = 54 (Q) · Scout Leader lined up 2 rows of 6 wooden badge. How many wooden badge in all? = 12 (Y)
- Clue 4 (Fractions of a number): "SPIKY HAIR STRANDS WERE ON THE BENCH"3/4 of 52 = 39 (S) · 1/5 of 15 = 3 (N) · 2/4 of 36 = 18 (H) · 4/10 of 35 = 14 (K) · 5/10 of 70 = 35 (R) · 1/10 of 50 = 5 (P) · 3/6 of 60 = 30 (Y) · 2/5 of 90 = 36 (W) · 2/6 of 66 = 22 (B) · 1/3 of 102 = 34 (E) · 4/8 of 42 = 21 (D) · 2/8 of 160 = 40 (A) · 1/2 of 46 = 23 (T) · 1/5 of 50 = 10 (C) · 4/8 of 58 = 29 (O) · 2/6 of 72 = 24 (I)
- Clue 5 (Fractions of a number): surviving statement (box 1) → Scout Hazel1/2 of 8 = 4 · 2/10 of 40 = 8 · 2/4 of 24 = 12 · 2/4 of 18 = 9 · 1/2 of 12 = 6 · 2/6 of 30 = 10 · 2/8 of 8 = 2 · 1/6 of 42 = 7 · 2/4 of 6 = 3 · 3/6 of 22 = 11 · 5/6 of 6 = 5
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Place value, Multiplication, Word problems, Fractions of a number
- Reading level
- grades 1-2
- Theme
- The Treehouse Map Mystery — set in Sunken Compass Island
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects