Grade 5Reading: grades 3-4Place valueMultiplicationRoundingFractions of a numberDivision
The Treehouse Trail Mystery
A sneaky rival has swiped the Golden Compass from the Treehouse Camp! We must search the jungle trails, solve the puzzles, and stop them before they sail away.
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 | shoe trail | hat color | feared animal |
|---|---|---|---|---|---|
| Tess | brass spyglass | animal calling | clean sneakers | leaf green hat | buzzing wasps |
| Leo | jungle machete | hidden camouflage | muddy boots | ocean blue hat | ticklish crabs |
| Sam | grappling hook | treetop sprinting | clean sneakers | leaf green hat | buzzing wasps |
| Rex | grappling hook | hidden camouflage | muddy boots | leaf green hat | buzzing wasps |
| Joy | jungle machete | animal calling | clean sneakers | leaf green hat | noisy parrots |
| Ivy | climbing rope | treetop sprinting | clean sneakers | bright red hat | buzzing wasps |
| Hope | brass spyglass | map reading | clean sneakers | bright red hat | noisy parrots |
| Gabe | climbing rope | treetop sprinting | muddy boots | bright red hat | ticklish crabs |
| Mia | jungle machete | map reading | clean sneakers | leaf green hat | buzzing wasps |
| Max | climbing rope | hidden camouflage | clean sneakers | bright red hat | buzzing wasps |
| Dan | pocket radio | hidden camouflage | clean sneakers | leaf green hat | ticklish crabs |
| Jax | grappling hook | animal calling | clean sneakers | leaf green hat | noisy parrots |
| Eli | pocket radio | vine swinging | muddy boots | bright red hat | noisy parrots |
| Amy | brass spyglass | hidden camouflage | muddy boots | leaf green hat | buzzing wasps |
| Ned | pocket radio | treetop sprinting | muddy boots | ocean blue hat | buzzing wasps |
| Roy | jungle machete | vine swinging | clean sneakers | bright red hat | noisy parrots |
| Pip | pocket radio | treetop sprinting | muddy boots | ocean blue hat | ticklish crabs |
| Kim | climbing rope | map reading | clean sneakers | leaf green hat | buzzing wasps |
| Zoe | brass spyglass | map reading | muddy boots | leaf green hat | ticklish crabs |
| Otis | pocket radio | animal calling | clean sneakers | leaf green hat | buzzing wasps |
| Eva | grappling hook | treetop sprinting | clean sneakers | ocean blue hat | noisy parrots |
Clue 1
Place value
We find an ancient stone map. The value of the hundreds digit in the carved number points us toward our 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
60
800
20
500
2000
9000
700
7000
T
60
700
4000
20
300
9000
4000
T
60
700
4000
T
60
8000
20
20
T
60
4000
3000
300
3000
8000
7000
9000
T
60
7000
9000
5000
What is the value of the 6 in 89,869?T
What is the value of the 3 in 63,815?P
What is the value of the 2 in 484,424?E
What is the value of the 2 in 942,969?A
What is the value of the 8 in 38,757?R
What is the value of the 7 in 24,756?D
What is the value of the 5 in 215,362?G
What is the value of the 8 in 793,833?H
What is the value of the 5 in 93,502?B
What is the value of the 9 in 449,518?N
What is the value of the 7 in 37,489?I
What is the value of the 3 in 25,360?S
What is the value of the 4 in 814,219?O
0/13 letters found
Clue 2
Multiplication facts (1-12)
To cross the stepping stones, we must count the rows of carved lizard tiles. Multiplying the rows reveals the path.
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
5
33
14
4
3
42
14
5
48
81
14
80
33
12
45
54
77
33
4
3
14
5
48
33
7
12
72
3
T
28
14
4 × 7 =T
8 × 10 =V
11 × 3 =E
2 × 7 =S
5 × 9 =Y
3 × 4 =R
7 × 11 =L
1 × 3 =N
7 × 1 =P
12 × 6 =I
1 × 4 =A
7 × 6 =D
1 × 5 =H
9 × 9 =W
6 × 9 =C
6 × 8 =O
0/16 letters found
Clue 3
Rounding
Our handheld tracker beeped. The screen only shows the distance rounded to the nearest ten, but it is enough to track the thief.
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
300
290
2300
A
300
4300
430
1100
50
A
300
3000
70
4300
90
2300
A
300
290
30
290
290
7000
A
300
4300
9000
900
2000
170
9000
3700
A
300
3000
900
130
2000
Round 317 to the nearest hundredA
Round 26 to the nearest tenP
Round 1,720 to the nearest thousandT
Round 3,661 to the nearest hundredB
Round 7,444 to the nearest thousandC
Round 432 to the nearest tenM
Round 287 to the nearest tenS
Round 2,255 to the nearest hundredW
Round 3,365 to the nearest thousandN
Round 170 to the nearest tenH
Round 8,996 to the nearest thousandE
Round 72 to the nearest tenG
Round 131 to the nearest tenI
Round 1,056 to the nearest hundredO
Round 46 to the nearest tenF
Round 887 to the nearest hundredD
Round 4,286 to the nearest hundredR
Round 93 to the nearest tenY
0/18 letters found
Clue 4
Fractions of a number
A friendly monkey demands a fraction of our bananas before he will point us toward the thief's escape route.
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
39
11
36
8
3
4
23
26
5
2
11
11
4
9
26
24
13
24
2
26
25
7
4
24
9
11
23
7
2
24
3/10 of 130 =W
2/6 of 108 =F
1/5 of 25 =G
1/3 of 12 =N
2/8 of 8 =R
7/10 of 10 =I
1/6 of 66 =E
2/4 of 18 =H
2/6 of 72 =T
2/4 of 6 =U
2/10 of 130 =A
1/8 of 104 =S
2/4 of 46 =D
2/8 of 100 =P
3/6 of 16 =O
0/15 letters found
Clue 5
Division facts (1-12) — the last clue
We find a heavy wooden chest locked with multiple keys. Dividing the keys equally into the locks pops the latch open.
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
66 ÷ 6 = ?
36 ÷ 3 = ?
30 ÷ 5 = ?
20 ÷ 5 = ?
24 ÷ 8 = ?
1 ÷ 1 = ?
72 ÷ 9 = ?
63 ÷ 9 = ?
22 ÷ 11 = ?
40 ÷ 4 = ?
25 ÷ 5 = ?
Step 2 — cross out the sentence with each answer
1.The villain scans the far river through a brass spyglass, then escapes the area by treetop sprinting.
2.The villain checks for patrols on a pocket radio, then disappears by vine swinging.
3.The villain clears the thick path with a jungle machete, then disappears by vine swinging.
4.The villain scans the far river through a brass spyglass, then disappears by vine swinging.
5.The villain scales the rocky wall using a climbing rope, then fools the guard dogs with animal calling.
6.The villain checks for patrols on a pocket radio, then fools the guard dogs with animal calling.
7.The villain swings across the canyon with a grappling hook, then finds a shortcut by map reading.
8.The villain scans the far river through a brass spyglass, then finds a shortcut by map reading.
9.The villain clears the thick path with a jungle machete, then finds a shortcut by map reading.
10.The villain swings across the canyon with a grappling hook, then fools the guard dogs with animal calling.
11.The villain scales the rocky wall using a climbing rope, then finds a shortcut by map reading.
12.The villain scans the far river through a brass spyglass, then fools the guard dogs with animal calling.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Treehouse Trail Mystery
Culprit: Mia (jungle machete · map reading · clean sneakers · leaf green hat · buzzing wasps)
- Clue 1 (Place value): "THE BANDIT DOES NOT DO TREETOP SPRINTING"What is the value of the 6 in 89,869? = 60 (T) · What is the value of the 3 in 63,815? = 3000 (P) · What is the value of the 2 in 484,424? = 20 (E) · What is the value of the 2 in 942,969? = 2000 (A) · What is the value of the 8 in 38,757? = 8000 (R) · What is the value of the 7 in 24,756? = 700 (D) · What is the value of the 5 in 215,362? = 5000 (G) · What is the value of the 8 in 793,833? = 800 (H) · What is the value of the 5 in 93,502? = 500 (B) · What is the value of the 9 in 449,518? = 9000 (N) · What is the value of the 7 in 37,489? = 7000 (I) · What is the value of the 3 in 25,360? = 300 (S) · What is the value of the 4 in 814,219? = 4000 (O)
- Clue 2 (Multiplication facts (1-12)): "THE SAND SHOWS VERY CLEAN SHOE PRINTS"4 × 7 = 28 (T) · 8 × 10 = 80 (V) · 11 × 3 = 33 (E) · 2 × 7 = 14 (S) · 5 × 9 = 45 (Y) · 3 × 4 = 12 (R) · 7 × 11 = 77 (L) · 1 × 3 = 3 (N) · 7 × 1 = 7 (P) · 12 × 6 = 72 (I) · 1 × 4 = 4 (A) · 7 × 6 = 42 (D) · 1 × 5 = 5 (H) · 9 × 9 = 81 (W) · 6 × 9 = 54 (C) · 6 × 8 = 48 (O)
- Clue 3 (Rounding): "A SWARM OF ANGRY WASPS SCARED THE BANDIT"Round 317 to the nearest hundred = 300 (A) · Round 26 to the nearest ten = 30 (P) · Round 1,720 to the nearest thousand = 2000 (T) · Round 3,661 to the nearest hundred = 3700 (B) · Round 7,444 to the nearest thousand = 7000 (C) · Round 432 to the nearest ten = 430 (M) · Round 287 to the nearest ten = 290 (S) · Round 2,255 to the nearest hundred = 2300 (W) · Round 3,365 to the nearest thousand = 3000 (N) · Round 170 to the nearest ten = 170 (H) · Round 8,996 to the nearest thousand = 9000 (E) · Round 72 to the nearest ten = 70 (G) · Round 131 to the nearest ten = 130 (I) · Round 1,056 to the nearest hundred = 1100 (O) · Round 46 to the nearest ten = 50 (F) · Round 887 to the nearest hundred = 900 (D) · Round 4,286 to the nearest hundred = 4300 (R) · Round 93 to the nearest ten = 90 (Y)
- Clue 4 (Fractions of a number): "WE FOUND A GREEN HAT STRAP IN THE DIRT"3/10 of 130 = 39 (W) · 2/6 of 108 = 36 (F) · 1/5 of 25 = 5 (G) · 1/3 of 12 = 4 (N) · 2/8 of 8 = 2 (R) · 7/10 of 10 = 7 (I) · 1/6 of 66 = 11 (E) · 2/4 of 18 = 9 (H) · 2/6 of 72 = 24 (T) · 2/4 of 6 = 3 (U) · 2/10 of 130 = 26 (A) · 1/8 of 104 = 13 (S) · 2/4 of 46 = 23 (D) · 2/8 of 100 = 25 (P) · 3/6 of 16 = 8 (O)
- Clue 5 (Division facts (1-12)): surviving statement (box 9) → Mia66 ÷ 6 = 11 · 36 ÷ 3 = 12 · 30 ÷ 5 = 6 · 20 ÷ 5 = 4 · 24 ÷ 8 = 3 · 1 ÷ 1 = 1 · 72 ÷ 9 = 8 · 63 ÷ 9 = 7 · 22 ÷ 11 = 2 · 40 ÷ 4 = 10 · 25 ÷ 5 = 5
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Place value, Multiplication, Rounding, Fractions of a number, Division
- Reading level
- grades 3-4
- Theme
- The Treehouse Trail Mystery — set in Banana Leaf Jungle on Castaway Island
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects