Grade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision

The Treehouse Canopy Caper

The legendary Golden Compass has vanished from the high branches! The Chief Mapmaker is lost without it. One of the jungle explorers is secretly the treehouse bandit. We must climb the canopy, solve the puzzles, and find the thief before they escape!

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	Canopy Tool	Escape Gear	Writing Hand	Hair Style	Secret Weakness
Luke	rope ladder	mega magnet	left handed	sunset orange	banana peels
Ruby	rope ladder	net launcher	right handed	muddy brown	tickle feathers
Sam	rope ladder	mega magnet	right handed	muddy brown	banana peels
Zack	glider wings	sonar goggles	left handed	sunset orange	banana peels
Lily	glider wings	net launcher	left handed	muddy brown	bright light
Eli	grappling hook	smoke bombs	right handed	muddy brown	tickle feathers
Abby	bamboo stilts	sonar goggles	right handed	muddy brown	bright light
Cole	vine swing	mega magnet	left handed	muddy brown	bright light
Mia	grappling hook	sonar goggles	right handed	muddy brown	tickle feathers
Iris	glider wings	net launcher	right handed	sunset orange	banana peels
Zoe	rope ladder	flash powder	right handed	wild blonde	tickle feathers
Max	vine swing	mega magnet	left handed	muddy brown	banana peels
Luna	glider wings	flash powder	left handed	muddy brown	tickle feathers
Maya	rope ladder	flash powder	left handed	muddy brown	bright light
Sasha	bamboo stilts	smoke bombs	left handed	wild blonde	banana peels
Otis	glider wings	mega magnet	left handed	muddy brown	bright light
Owen	vine swing	sonar goggles	left handed	sunset orange	bright light
Jack	rope ladder	smoke bombs	left handed	sunset orange	tickle feathers
Finn	bamboo stilts	smoke bombs	left handed	wild blonde	tickle feathers
Ben	vine swing	smoke bombs	left handed	muddy brown	bright light
Toby	glider wings	mega magnet	left handed	muddy brown	banana peels

Clue 1

Rounding

The treehouse radar scan estimates how high the thief jumped. The monitor only shows rounded numbers, but rounding to the nearest ten reveals 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.

5000

2300

900

230

290

300

7000

2300

130

290

7000

430

130

2300

230

290

2300

110

230

430

290

2900

5000

2300

Round 69 to the nearest tenT

Round 263 to the nearest hundredI

Round 88 to the nearest tenR

Round 895 to the nearest hundredB

Round 6,978 to the nearest thousandO

Round 292 to the nearest tenN

Round 27 to the nearest tenD

Round 232 to the nearest tenA

Round 4,663 to the nearest thousandH

Round 2,864 to the nearest hundredC

Round 113 to the nearest tenL

Round 2,319 to the nearest hundredE

Round 431 to the nearest tenU

Round 130 to the nearest tenS

0/14 letters found

Clue 2

Addition

We found footprints on the wooden bridge. Adding up all the steps from both sides of the river will show us where the thief ran next.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

5292

4513

9706

5947

3441

5952

4947

5274

5292

5435

8235

9706

4947

5292

4513

9706

5274

9873

7442

9706

8188

5292

4513

3441

5952

4947

5292

5071

8235

2248

5274

5604

9706

5274

5292

1864 + 3428 =T

1916 + 1525 =A

3427 + 2520 =B

4260 + 3928 =F

3063 + 2889 =N

2594 + 2353 =D

3231 + 1840 =O

2424 + 2089 =H

3961 + 4274 =S

2330 + 3274 =P

3526 + 3916 =L

1196 + 1052 =W

3156 + 2279 =U

2248 + 3026 =I

3010 + 6863 =R

3166 + 6540 =E

0/16 letters found

Clue 3

Subtraction

The thief dropped a pouch of shiny jungle gems. If we subtract the lost gems from the total count, we can find out what is missing.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

1051

8765

6732

7332

8457

5819

6839

6732

7332

8457

5819

8948

6732

6839

1051

6839

6732

3100

7496

5819

8457

7883

1965

8457

6594

7496

4812

1051

6594

3100

7496

6732

5819

1198 - 147 =B

13666 - 4901 =R

6791 - 1979 =Y

11197 - 4358 =L

9355 - 2023 =G

12210 - 3753 =H

12059 - 3111 =W

3556 - 456 =N

8113 - 1519 =A

8219 - 1487 =I

12875 - 4992 =E

11775 - 4279 =D

6408 - 589 =T

6928 - 4963 =S

0/14 letters found

Clue 4

Multiplication facts (1-12)

We found rows of mysterious muddy bootprints. Counting the rows and multiplying them by the prints in each row points us to the next 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.

144

6 × 10 =M

8 × 12 =B

6 × 11 =N

5 × 1 =U

9 × 8 =T

6 × 9 =C

2 × 8 =A

11 × 9 =Y

1 × 3 =S

10 × 4 =D

2 × 9 =G

12 × 12 =R

7 × 7 =W

2 × 12 =O

1 × 11 =I

11 × 8 =H

0/16 letters found

Clue 5

Division facts (1-12) — the last clue

The explorers need to share the rescue ropes equally. Splitting the rope bundle among the search teams gives us the final secret code.

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

63 ÷ 9 = ?

48 ÷ 12 = ?

99 ÷ 9 = ?

36 ÷ 4 = ?

40 ÷ 4 = ?

25 ÷ 5 = ?

12 ÷ 1 = ?

64 ÷ 8 = ?

33 ÷ 11 = ?

8 ÷ 8 = ?

24 ÷ 4 = ?

Step 2 — cross out the sentence with each answer

1.The villain marched past the mud on bamboo stilts, then blinded the lookout using flash powder.

2.The villain soared through the trees with glider wings, then pulled the keys away with a mega magnet.

3.The villain soared through the trees with glider wings, then navigated the dark with sonar goggles.

4.The villain climbed up high on a rope ladder, then blinded the lookout using flash powder.

5.The villain scaled the tree with a grappling hook, then blinded the lookout using flash powder.

6.The villain scaled the tree with a grappling hook, then escaped in a cloud of smoke bombs.

7.The villain zipped between branches on a vine swing, then pulled the keys away with a mega magnet.

8.The villain scaled the tree with a grappling hook, then navigated the dark with sonar goggles.

9.The villain marched past the mud on bamboo stilts, then pulled the keys away with a mega magnet.

10.The villain soared through the trees with glider wings, then blinded the lookout using flash powder.

11.The villain zipped between branches on a vine swing, then escaped in a cloud of smoke bombs.

12.The villain zipped between branches on a vine swing, then blinded the lookout using flash powder.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Treehouse Canopy Caper

Culprit: Otis (glider wings · mega magnet · left handed · muddy brown · bright light)

Clue 1 (Rounding): "THE BANDIT DOES NOT USE A NET LAUNCHER"
Round 69 to the nearest ten = 70 (T) · Round 263 to the nearest hundred = 300 (I) · Round 88 to the nearest ten = 90 (R) · Round 895 to the nearest hundred = 900 (B) · Round 6,978 to the nearest thousand = 7000 (O) · Round 292 to the nearest ten = 290 (N) · Round 27 to the nearest ten = 30 (D) · Round 232 to the nearest ten = 230 (A) · Round 4,663 to the nearest thousand = 5000 (H) · Round 2,864 to the nearest hundred = 2900 (C) · Round 113 to the nearest ten = 110 (L) · Round 2,319 to the nearest hundred = 2300 (E) · Round 431 to the nearest ten = 430 (U) · Round 130 to the nearest ten = 130 (S)
Clue 2 (Addition): "THE BANDIT USED THEIR LEFT HAND TO SWIPE IT"
1864 + 3428 = 5292 (T) · 1916 + 1525 = 3441 (A) · 3427 + 2520 = 5947 (B) · 4260 + 3928 = 8188 (F) · 3063 + 2889 = 5952 (N) · 2594 + 2353 = 4947 (D) · 3231 + 1840 = 5071 (O) · 2424 + 2089 = 4513 (H) · 3961 + 4274 = 8235 (S) · 2330 + 3274 = 5604 (P) · 3526 + 3916 = 7442 (L) · 1196 + 1052 = 2248 (W) · 3156 + 2279 = 5435 (U) · 2248 + 3026 = 5274 (I) · 3010 + 6863 = 9873 (R) · 3166 + 6540 = 9706 (E)
Clue 3 (Subtraction): "BRIGHT LIGHT WILL BLIND THE SHADY BANDIT"
1198 - 147 = 1051 (B) · 13666 - 4901 = 8765 (R) · 6791 - 1979 = 4812 (Y) · 11197 - 4358 = 6839 (L) · 9355 - 2023 = 7332 (G) · 12210 - 3753 = 8457 (H) · 12059 - 3111 = 8948 (W) · 3556 - 456 = 3100 (N) · 8113 - 1519 = 6594 (A) · 8219 - 1487 = 6732 (I) · 12875 - 4992 = 7883 (E) · 11775 - 4279 = 7496 (D) · 6408 - 589 = 5819 (T) · 6928 - 4963 = 1965 (S)
Clue 4 (Multiplication facts (1-12)): "MUDDY BROWN HAIR WAS CAUGHT ON A BRANCH"
6 × 10 = 60 (M) · 8 × 12 = 96 (B) · 6 × 11 = 66 (N) · 5 × 1 = 5 (U) · 9 × 8 = 72 (T) · 6 × 9 = 54 (C) · 2 × 8 = 16 (A) · 11 × 9 = 99 (Y) · 1 × 3 = 3 (S) · 10 × 4 = 40 (D) · 2 × 9 = 18 (G) · 12 × 12 = 144 (R) · 7 × 7 = 49 (W) · 2 × 12 = 24 (O) · 1 × 11 = 11 (I) · 11 × 8 = 88 (H)
Clue 5 (Division facts (1-12)): surviving statement (box 2) → Otis
63 ÷ 9 = 7 · 48 ÷ 12 = 4 · 99 ÷ 9 = 11 · 36 ÷ 4 = 9 · 40 ÷ 4 = 10 · 25 ÷ 5 = 5 · 12 ÷ 1 = 12 · 64 ÷ 8 = 8 · 33 ÷ 11 = 3 · 8 ÷ 8 = 1 · 24 ÷ 4 = 6

About this mystery

Grade level: Grade 4 math
Math topics: Rounding, Addition, Subtraction, Multiplication, Division
Reading level: grades 3-4
Theme: The Treehouse Canopy Caper — set in The Great Treehouse Kingdom
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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