Grade 4Reading: grades 3-4RoundingMulti-step word problemsBar modelsPlace valueDivision
The Sky Pirate Compass Caper
Someone sneaked into the Chief Navigator's tent and took the ancient Golden Compass! Solve the clues to find the Sky Raider.
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 | Gear Item | Side Gadget | Dominant Hand | Hair Style | Trap Weakness |
|---|---|---|---|---|---|
| Felix | Glider Wings | Signal Mirror | Left Handed | Curly Brown | Bright Light |
| Amelia | Map Scanner | Smoke Bomb | Left Handed | Curly Brown | Sneeze Powder |
| Oscar | Grappling Hook | Flash Beacon | Left Handed | Spiky Red | Bright Light |
| Milo | Grappling Hook | Flash Beacon | Left Handed | Spiky Red | Loud Whistle |
| Luna | Glider Wings | Flash Beacon | Left Handed | Sleek Black | Sneeze Powder |
| Marco | Wind Whistle | Signal Mirror | Right Handed | Sleek Black | Sneeze Powder |
| Orville | Grappling Hook | Signal Mirror | Right Handed | Curly Brown | Sneeze Powder |
| Ezra | Map Scanner | Signal Mirror | Left Handed | Curly Brown | Bright Light |
| Nora | Map Scanner | Flash Beacon | Left Handed | Spiky Red | Loud Whistle |
| Ivy | Glider Wings | Signal Mirror | Left Handed | Sleek Black | Bright Light |
| Chloe | Grappling Hook | Signal Mirror | Right Handed | Sleek Black | Loud Whistle |
| Tess | Compass Ring | Flare Gun | Right Handed | Curly Brown | Sneeze Powder |
| Finn | Glider Wings | Flare Gun | Right Handed | Curly Brown | Bright Light |
| Ruby | Grappling Hook | Rope Launcher | Right Handed | Curly Brown | Sneeze Powder |
| Eli | Grappling Hook | Flare Gun | Left Handed | Sleek Black | Bright Light |
| Piper | Glider Wings | Flash Beacon | Left Handed | Spiky Red | Sneeze Powder |
| Wilbur | Compass Ring | Flash Beacon | Right Handed | Sleek Black | Bright Light |
| Sonia | Grappling Hook | Flare Gun | Right Handed | Curly Brown | Sneeze Powder |
| Maya | Map Scanner | Smoke Bomb | Right Handed | Sleek Black | Loud Whistle |
| Hugo | Map Scanner | Rope Launcher | Left Handed | Curly Brown | Bright Light |
| Hazel | Wind Whistle | Flare Gun | Right Handed | Curly Brown | Sneeze Powder |
Clue 1
Rounding
You check the camp inventory log and compare gear boxes using bar models to see what was taken.
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
700
430
370
9000
3000
200
70
370
9000
2000
70
200
70
2900
50
T
700
90
2000
370
3000
9000
50
130
370
1700
3000
90
2900
230
430
370
9000
Round 675 to the nearest hundredT
Round 173 to the nearest hundredI
Round 8,997 to the nearest thousandR
Round 70 to the nearest tenD
Round 50 to the nearest tenO
Round 91 to the nearest tenU
Round 133 to the nearest tenP
Round 2,884 to the nearest thousandA
Round 368 to the nearest tenE
Round 1,694 to the nearest hundredL
Round 2,013 to the nearest thousandS
Round 227 to the nearest tenC
Round 2,871 to the nearest hundredN
Round 432 to the nearest tenH
0/14 letters found
Clue 2
Multi-step word problems
You interview the camp guards and add up the steps in their patrol routes.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
R
58
30
6
27
54
27
37
81
D
E
D
Junior Scout earned 7 climbing ropes in each of 4 rounds, plus 32 bonus climbing ropes. Then 2 climbing ropes were lost. How many climbing ropes are left?R
Junior Scout collected 65 climbing ropes in the morning and 259 climbing ropes in the afternoon, then split them equally among 6 Cloud Patrol. How many climbing ropes did each get?T
Junior Scout earned 2 compasses in each of 6 rounds, plus 24 bonus compasses. Then 6 compasses were lost. How many compasses are left?I
There were 173 lanterns in all. 11 lanterns were set aside. The rest were shared equally among 6 Cloud Patrol. How many lanterns did each get?H
Junior Scout earned 2 compasses in each of 6 rounds, plus 75 bonus compasses. Then 6 compasses were lost. How many compasses are left?N
There were 85 sky maps in all. 11 sky maps were set aside. The rest were shared equally among 2 Cloud Patrol. How many sky maps did each get?A
Junior Scout earned 3 lanterns in each of 4 rounds, plus 4 bonus lanterns. Then 10 lanterns were lost. How many lanterns are left?G
0/7 letters found
Clue 3
Bar model word problems
The sky radar readout only shows rounded altitude numbers for flying gliders.
Draw a bar model to solve each word problem. Its answer reveals a letter — write the letters in the boxes to fill in the missing word.
Someonescaredthevillainoffwith .
S
17
109
9
9
63
9
101
102
71
D
9
R
Junior Scout shares 34 compasses equally among 2 teams. How many compasses does each team get?
draw a bar model
Answer:→S
Junior Scout has 202 lanterns, packed 2 to a bag. How many bags can be filled?
draw a bar model
Answer:→P
Junior Scout has 189 glider straps, packed 3 to a bag. How many bags can be filled?
draw a bar model
Answer:→Z
There were 95 compasses in all. 24 compasses were used. How many compasses are left?
draw a bar model
Answer:→W
Junior Scout used 2/3 of the sky maps on the first day. The other 34 sky maps were used the next day. How many sky maps were there in all?
draw a bar model
Answer:→O
One group collected 1 lanterns and another group collected 8 lanterns. How many lanterns in all?
draw a bar model
Answer:→E
Junior Scout shares 218 lanterns equally among 2 teams. How many lanterns does each team get?
draw a bar model
Answer:→N
0/7 letters found
Clue 4
Place value
You inspect the digits etched into the tent lock code to find a place value pattern.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
C
30
100
7000
400
50
90
7000
200
4000
80
2000
300
800
7000
4000
300
70
900
200
100
80
6000
200
80
600
2000
700
600
700
80
600
900
400
200
200
7000
What is the value of the 3 in 637?C
What is the value of the 2 in 240?O
What is the value of the 7 in 7,019?R
What is the value of the 8 in 835?I
What is the value of the 1 in 182?U
What is the value of the 9 in 941?F
What is the value of the 6 in 608?T
What is the value of the 5 in 8,256?Y
What is the value of the 9 in 4,390?B
What is the value of the 4 in 94,975?W
What is the value of the 6 in 6,827?D
What is the value of the 2 in 92,946?H
What is the value of the 7 in 740?E
What is the value of the 7 in 274?S
What is the value of the 3 in 314?A
What is the value of the 4 in 470?L
What is the value of the 8 in 5,685?N
0/17 letters found
Clue 5
Division facts (1-12) — the last clue
You divide the stray footprints into equal groups across the search grid.
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
8 ÷ 4 = ?
55 ÷ 11 = ?
32 ÷ 4 = ?
121 ÷ 11 = ?
28 ÷ 4 = ?
60 ÷ 6 = ?
72 ÷ 8 = ?
24 ÷ 6 = ?
72 ÷ 12 = ?
27 ÷ 9 = ?
3 ÷ 3 = ?
Step 2 — cross out the sentence with each answer
1.The villain activated a compass ring, then threw a smoke bomb.
2.The villain blew a wind whistle, then fired a flare gun.
3.The villain soared down on glider wings, then shot a rope launcher.
4.The villain soared down on glider wings, then threw a smoke bomb.
5.The villain swung in on a grappling hook, then fired a flare gun.
6.The villain soared down on glider wings, then flashed a signal mirror.
7.The villain activated a compass ring, then shot a rope launcher.
8.The villain activated a compass ring, then fired a flare gun.
9.The villain scanned the desk with a map scanner, then threw a smoke bomb.
10.The villain scanned the desk with a map scanner, then flashed a beacon.
11.The villain blew a wind whistle, then flashed a beacon.
12.The villain swung in on a grappling hook, then flashed a signal mirror.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Sky Pirate Compass Caper
Culprit: Orville (Grappling Hook · Signal Mirror · Right Handed · Curly Brown · Sneeze Powder)
- Clue 1 (Rounding): "THE RAIDERS DID NOT USE A ROPE LAUNCHER"Round 675 to the nearest hundred = 700 (T) · Round 173 to the nearest hundred = 200 (I) · Round 8,997 to the nearest thousand = 9000 (R) · Round 70 to the nearest ten = 70 (D) · Round 50 to the nearest ten = 50 (O) · Round 91 to the nearest ten = 90 (U) · Round 133 to the nearest ten = 130 (P) · Round 2,884 to the nearest thousand = 3000 (A) · Round 368 to the nearest ten = 370 (E) · Round 1,694 to the nearest hundred = 1700 (L) · Round 2,013 to the nearest thousand = 2000 (S) · Round 227 to the nearest ten = 230 (C) · Round 2,871 to the nearest hundred = 2900 (N) · Round 432 to the nearest ten = 430 (H)
- Clue 2 (Multi-step word problems): "RIGHT HANDED"Junior Scout earned 7 climbing ropes in each of 4 rounds, plus 32 bonus climbing ropes. Then 2 climbing ropes were lost. How many climbing ropes are left? = 58 (R) · Junior Scout collected 65 climbing ropes in the morning and 259 climbing ropes in the afternoon, then split them equally among 6 Cloud Patrol. How many climbing ropes did each get? = 54 (T) · Junior Scout earned 2 compasses in each of 6 rounds, plus 24 bonus compasses. Then 6 compasses were lost. How many compasses are left? = 30 (I) · There were 173 lanterns in all. 11 lanterns were set aside. The rest were shared equally among 6 Cloud Patrol. How many lanterns did each get? = 27 (H) · Junior Scout earned 2 compasses in each of 6 rounds, plus 75 bonus compasses. Then 6 compasses were lost. How many compasses are left? = 81 (N) · There were 85 sky maps in all. 11 sky maps were set aside. The rest were shared equally among 2 Cloud Patrol. How many sky maps did each get? = 37 (A) · Junior Scout earned 3 lanterns in each of 4 rounds, plus 4 bonus lanterns. Then 10 lanterns were lost. How many lanterns are left? = 6 (G)
- Clue 3 (Bar model word problems): "SNEEZE POWDER"Junior Scout shares 34 compasses equally among 2 teams. How many compasses does each team get? = 17 (S) · Junior Scout has 202 lanterns, packed 2 to a bag. How many bags can be filled? = 101 (P) · Junior Scout has 189 glider straps, packed 3 to a bag. How many bags can be filled? = 63 (Z) · There were 95 compasses in all. 24 compasses were used. How many compasses are left? = 71 (W) · Junior Scout used 2/3 of the sky maps on the first day. The other 34 sky maps were used the next day. How many sky maps were there in all? = 102 (O) · One group collected 1 lanterns and another group collected 8 lanterns. How many lanterns in all? = 9 (E) · Junior Scout shares 218 lanterns equally among 2 teams. How many lanterns does each team get? = 109 (N)
- Clue 4 (Place value): "CURLY BROWN HAIR WAS FOUND ON THE TENT FLOOR"What is the value of the 3 in 637? = 30 (C) · What is the value of the 2 in 240? = 200 (O) · What is the value of the 7 in 7,019? = 7000 (R) · What is the value of the 8 in 835? = 800 (I) · What is the value of the 1 in 182? = 100 (U) · What is the value of the 9 in 941? = 900 (F) · What is the value of the 6 in 608? = 600 (T) · What is the value of the 5 in 8,256? = 50 (Y) · What is the value of the 9 in 4,390? = 90 (B) · What is the value of the 4 in 94,975? = 4000 (W) · What is the value of the 6 in 6,827? = 6000 (D) · What is the value of the 2 in 92,946? = 2000 (H) · What is the value of the 7 in 740? = 700 (E) · What is the value of the 7 in 274? = 70 (S) · What is the value of the 3 in 314? = 300 (A) · What is the value of the 4 in 470? = 400 (L) · What is the value of the 8 in 5,685? = 80 (N)
- Clue 5 (Division facts (1-12)): surviving statement (box 12) → Orville8 ÷ 4 = 2 · 55 ÷ 11 = 5 · 32 ÷ 4 = 8 · 121 ÷ 11 = 11 · 28 ÷ 4 = 7 · 60 ÷ 6 = 10 · 72 ÷ 8 = 9 · 24 ÷ 6 = 4 · 72 ÷ 12 = 6 · 27 ÷ 9 = 3 · 3 ÷ 3 = 1
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Rounding, Multi-step word problems, Bar models, Place value, Division
- Reading level
- grades 3-4
- Theme
- The Sky Pirate Compass Caper — set in Cloud Compass Explorer Camp
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects