Grade 4Reading: grades 3-4Place valueAdditionSubtractionRoundingDivision
The Canopy Camp Caper
The Golden Carabiner has vanished from the main cabin! Without it, nobody can ride the Mega-Zipline at the campfire tonight. Camp Director Ben needs our help to track down the culprit before the sun goes down!
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 | Camp Skill | Adventure Gear | Dominant Hand | Hair Color | Nature Fear |
|---|---|---|---|---|---|
| Wyatt | Kayaking | Grappling hook | Left-handed | Brown hair | Afraid of frogs |
| Jack | Kayaking | Night-vision goggles | Right-handed | Black hair | Afraid of frogs |
| Toby | Fire-building | Grappling hook | Right-handed | Black hair | Afraid of mud |
| Sophia | Fire-building | Pocket whistle | Left-handed | Brown hair | Afraid of mud |
| Ella | Trail-blazing | Walkie-talkie | Left-handed | Black hair | Afraid of mud |
| Finn | Tree-climbing | Grappling hook | Right-handed | Black hair | Afraid of spiders |
| Emma | Kayaking | Walkie-talkie | Left-handed | Black hair | Afraid of spiders |
| Zoe | Zip-lining | Night-vision goggles | Right-handed | Black hair | Afraid of spiders |
| Ava | Kayaking | Walkie-talkie | Right-handed | Black hair | Afraid of spiders |
| Grace | Fire-building | Grappling hook | Left-handed | Black hair | Afraid of spiders |
| Luke | Fire-building | Pocket whistle | Right-handed | Black hair | Afraid of spiders |
| Maya | Trail-blazing | Compass watch | Right-handed | Black hair | Afraid of spiders |
| Harper | Zip-lining | Grappling hook | Left-handed | Blonde hair | Afraid of spiders |
| Sam | Tree-climbing | Compass watch | Left-handed | Black hair | Afraid of mud |
| Chloe | Kayaking | Night-vision goggles | Left-handed | Blonde hair | Afraid of mud |
| Max | Fire-building | Grappling hook | Left-handed | Brown hair | Afraid of spiders |
| Leo | Fire-building | Walkie-talkie | Right-handed | Blonde hair | Afraid of frogs |
| Mia | Fire-building | Compass watch | Left-handed | Black hair | Afraid of spiders |
| Owen | Kayaking | Walkie-talkie | Right-handed | Black hair | Afraid of mud |
| Noah | Trail-blazing | Compass watch | Right-handed | Blonde hair | Afraid of frogs |
| Lily | Kayaking | Pocket whistle | Right-handed | Brown hair | Afraid of spiders |
Clue 1
Place value
We found a locked gear box with digit buttons. To find the first clue inside, we must look at the value of the digit in the tens place on the code card.
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
7000
40
30
T
7000
40
900
30
800
300
60
30
200
400
60
T
7000
3000
200
30
9000
5000
80
9000
500
500
8000
900
400
5000
40
60
60
600
What is the value of the 7 in 47,233?T
What is the value of the 9 in 976?I
What is the value of the 9 in 29,057?A
What is the value of the 5 in 527?P
What is the value of the 6 in 960?O
What is the value of the 8 in 845?F
What is the value of the 3 in 3,468?U
What is the value of the 3 in 306?D
What is the value of the 5 in 5,130?G
What is the value of the 4 in 6,940?H
What is the value of the 3 in 935?E
What is the value of the 6 in 629?K
What is the value of the 4 in 5,430?N
What is the value of the 2 in 4,206?S
What is the value of the 8 in 1,086?R
What is the value of the 8 in 18,574?L
0/16 letters found
Clue 2
Addition
We gathered all the scattered trail markers left behind. Let us add up the total number of red and yellow flags to unlock 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.
A
5320
5214
6056
7356
5215
6718
5215
A
5320
4424
8904
9414
8904
7214
9414
5214
8341
7849
4424
3560
9414
8417
6718
6718
5215
6056
8341
9680
A
5320
5214
4660
3559 + 1761 =A
4102 + 2616 =T
5279 + 2570 =O
2927 + 3129 =I
6629 + 3051 =M
3862 + 3494 =G
3452 + 1763 =H
4291 + 4126 =F
3807 + 3407 =P
1845 + 1715 =L
4138 + 4766 =D
5165 + 4249 =E
4903 + 3438 =S
1916 + 3298 =R
2546 + 2114 =K
2541 + 1883 =N
0/16 letters found
Clue 3
Subtraction
The map chest has a heavy lock. We must subtract the smaller number of canteen ounces from the larger number to crack the lock.
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
1124
2472
1282
T
1124
2472
6577
1282
5954
6581
3420
4801
3420
2842
3420
5930
5954
6581
8619
5515
3420
6385
7743
6577
6959
1282
6581
2842
1282
1490
5281 - 4157 =T
2605 - 1115 =B
10983 - 4406 =I
10702 - 2959 =P
8254 - 2739 =M
7332 - 1402 =Y
5087 - 2615 =H
7602 - 4760 =W
6580 - 1779 =N
5830 - 4548 =E
8061 - 1102 =D
6123 - 2703 =A
8066 - 1485 =R
11723 - 3104 =O
9206 - 3252 =F
8093 - 1708 =S
0/16 letters found
Clue 4
Rounding
The campsite radar screen only shows numbers rounded to the nearest ten. We need to round our distance reading to get the next hint.
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
500
2900
4300
700
1700
7000
1100
2300
7000
A
500
9000
110
200
A
500
4300
900
170
A
500
2900
5000
700
70
200
1100
20
A
500
30
Round 478 to the nearest hundredA
Round 9,174 to the nearest thousandC
Round 22 to the nearest tenM
Round 70 to the nearest tenT
Round 889 to the nearest hundredR
Round 4,255 to the nearest hundredI
Round 174 to the nearest tenW
Round 201 to the nearest hundredH
Round 714 to the nearest hundredN
Round 1,083 to the nearest hundredE
Round 6,727 to the nearest thousandL
Round 4,955 to the nearest thousandO
Round 2,916 to the nearest hundredS
Round 2,277 to the nearest hundredB
Round 32 to the nearest tenP
Round 111 to the nearest tenK
Round 1,742 to the nearest hundredG
0/17 letters found
Clue 5
Division facts (1-12) — the last clue
We found a box of snack bars to share equally among our team. Dividing them up leaves a remainder that points to 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
10 ÷ 2 = ?
33 ÷ 3 = ?
32 ÷ 8 = ?
18 ÷ 6 = ?
18 ÷ 2 = ?
6 ÷ 6 = ?
18 ÷ 9 = ?
144 ÷ 12 = ?
90 ÷ 9 = ?
77 ÷ 11 = ?
72 ÷ 9 = ?
Step 2 — cross out the sentence with each answer
1.The villain paddles across the lake, then turns on night vision goggles.
2.The villain marks a secret path, then whispers into a walkie talkie.
3.The villain sparks a small campfire, then turns on night vision goggles.
4.The villain paddles across the lake, then whispers into a walkie talkie.
5.The villain sparks a small campfire, then blows a pocket whistle.
6.The villain slides down the rope, then turns on night vision goggles.
7.The villain marks a secret path, then tosses a grappling hook.
8.The villain scrambles up the trunk, then checks a compass watch.
9.The villain scrambles up the trunk, then whispers into a walkie talkie.
10.The villain scrambles up the trunk, then blows a pocket whistle.
11.The villain marks a secret path, then checks a compass watch.
12.The villain slides down the rope, then checks a compass watch.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Canopy Camp Caper
Culprit: Zoe (Zip-lining · Night-vision goggles · Right-handed · Black hair · Afraid of spiders)
- Clue 1 (Place value): "THE THIEF DOES NOT USE A GRAPPLING HOOK"What is the value of the 7 in 47,233? = 7000 (T) · What is the value of the 9 in 976? = 900 (I) · What is the value of the 9 in 29,057? = 9000 (A) · What is the value of the 5 in 527? = 500 (P) · What is the value of the 6 in 960? = 60 (O) · What is the value of the 8 in 845? = 800 (F) · What is the value of the 3 in 3,468? = 3000 (U) · What is the value of the 3 in 306? = 300 (D) · What is the value of the 5 in 5,130? = 5000 (G) · What is the value of the 4 in 6,940? = 40 (H) · What is the value of the 3 in 935? = 30 (E) · What is the value of the 6 in 629? = 600 (K) · What is the value of the 4 in 5,430? = 400 (N) · What is the value of the 2 in 4,206? = 200 (S) · What is the value of the 8 in 1,086? = 80 (R) · What is the value of the 8 in 18,574? = 8000 (L)
- Clue 2 (Addition): "A RIGHT HANDED PERSON LEFT THIS MARK"3559 + 1761 = 5320 (A) · 4102 + 2616 = 6718 (T) · 5279 + 2570 = 7849 (O) · 2927 + 3129 = 6056 (I) · 6629 + 3051 = 9680 (M) · 3862 + 3494 = 7356 (G) · 3452 + 1763 = 5215 (H) · 4291 + 4126 = 8417 (F) · 3807 + 3407 = 7214 (P) · 1845 + 1715 = 3560 (L) · 4138 + 4766 = 8904 (D) · 5165 + 4249 = 9414 (E) · 4903 + 3438 = 8341 (S) · 1916 + 3298 = 5214 (R) · 2546 + 2114 = 4660 (K) · 2541 + 1883 = 4424 (N)
- Clue 3 (Subtraction): "THE THIEF RAN AWAY FROM A SPIDER WEB"5281 - 4157 = 1124 (T) · 2605 - 1115 = 1490 (B) · 10983 - 4406 = 6577 (I) · 10702 - 2959 = 7743 (P) · 8254 - 2739 = 5515 (M) · 7332 - 1402 = 5930 (Y) · 5087 - 2615 = 2472 (H) · 7602 - 4760 = 2842 (W) · 6580 - 1779 = 4801 (N) · 5830 - 4548 = 1282 (E) · 8061 - 1102 = 6959 (D) · 6123 - 2703 = 3420 (A) · 8066 - 1485 = 6581 (R) · 11723 - 3104 = 8619 (O) · 9206 - 3252 = 5954 (F) · 8093 - 1708 = 6385 (S)
- Clue 4 (Rounding): "A SINGLE BLACK HAIR WAS ON THE MAP"Round 478 to the nearest hundred = 500 (A) · Round 9,174 to the nearest thousand = 9000 (C) · Round 22 to the nearest ten = 20 (M) · Round 70 to the nearest ten = 70 (T) · Round 889 to the nearest hundred = 900 (R) · Round 4,255 to the nearest hundred = 4300 (I) · Round 174 to the nearest ten = 170 (W) · Round 201 to the nearest hundred = 200 (H) · Round 714 to the nearest hundred = 700 (N) · Round 1,083 to the nearest hundred = 1100 (E) · Round 6,727 to the nearest thousand = 7000 (L) · Round 4,955 to the nearest thousand = 5000 (O) · Round 2,916 to the nearest hundred = 2900 (S) · Round 2,277 to the nearest hundred = 2300 (B) · Round 32 to the nearest ten = 30 (P) · Round 111 to the nearest ten = 110 (K) · Round 1,742 to the nearest hundred = 1700 (G)
- Clue 5 (Division facts (1-12)): surviving statement (box 6) → Zoe10 ÷ 2 = 5 · 33 ÷ 3 = 11 · 32 ÷ 8 = 4 · 18 ÷ 6 = 3 · 18 ÷ 2 = 9 · 6 ÷ 6 = 1 · 18 ÷ 9 = 2 · 144 ÷ 12 = 12 · 90 ÷ 9 = 10 · 77 ÷ 11 = 7 · 72 ÷ 9 = 8
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Place value, Addition, Subtraction, Rounding, Division
- Reading level
- grades 3-4
- Theme
- The Canopy Camp Caper — set in Whispering Woods Adventure Camp
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects