Grade 5Reading: grades 5-6AdditionFractions of a numberOrder of operationsMultiplicationDivision
The Cloud Compass Heist
Someone sneaked into the Navigation Tower and stole the ancient Golden Compass! Detectives must review the evidence to identify the rogue pilot before they escape into the clouds.
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 | Gadget | Vehicle | Stance | Scarf Color | Trap |
|---|---|---|---|---|---|
| Orville Cloud | Smoke Bomb | Solar Dirigible | Right Handed | Cobalt Blue | Bright Flash |
| Wilbur Cloud | Glider Pack | Steam Runner | Right Handed | Emerald Green | Sticky Net |
| Elena Rostova | Glider Pack | Solar Dirigible | Right Handed | Emerald Green | Bright Flash |
| Nora Sterling | Sonic Horn | Solar Dirigible | Left Handed | Emerald Green | Bright Flash |
| Dorian Drift | Sonic Horn | Solar Dirigible | Left Handed | Ruby Red | Sticky Net |
| Callum Mist | Grapple Hook | Solar Dirigible | Right Handed | Emerald Green | Bright Flash |
| Jasper Vance | Grapple Hook | Jet Biplane | Left Handed | Cobalt Blue | Loud Whistle |
| Amelia Skyward | Smoke Bomb | Solar Dirigible | Right Handed | Cobalt Blue | Sticky Net |
| Hazel Soar | Glider Pack | Solar Dirigible | Left Handed | Cobalt Blue | Sticky Net |
| Corin Aerie | Smoke Bomb | Solar Dirigible | Left Handed | Emerald Green | Bright Flash |
| Gideon Cross | Grapple Hook | Cloud Skiff | Right Handed | Cobalt Blue | Loud Whistle |
| Bram Tempest | Sonic Horn | Cloud Skiff | Right Handed | Cobalt Blue | Bright Flash |
| Lyra Cirrus | Glider Pack | Steam Runner | Right Handed | Ruby Red | Sticky Net |
| Tobias Zephyr | Glider Pack | Gyro Copter | Left Handed | Emerald Green | Bright Flash |
| Julian Nimbus | Grapple Hook | Solar Dirigible | Left Handed | Cobalt Blue | Bright Flash |
| Silas Vane | Sonic Horn | Solar Dirigible | Left Handed | Ruby Red | Loud Whistle |
| Rowan Gust | Smoke Bomb | Jet Biplane | Left Handed | Ruby Red | Bright Flash |
| Captain Barnaby | Grapple Hook | Steam Runner | Left Handed | Emerald Green | Bright Flash |
| Maren Gale | Glider Pack | Solar Dirigible | Left Handed | Emerald Green | Sticky Net |
| Talia Breeze | Magnet Glove | Gyro Copter | Left Handed | Cobalt Blue | Sticky Net |
| Finnian Drake | Magnet Glove | Solar Dirigible | Left Handed | Emerald Green | Bright Flash |
Clue 1
Addition
To calculate total flight hours logged last night, the airship warden added up all gate logs.
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
6906
9572
3970
9482
5222
2332
2332
8177
5222
9746
2086
5222
2086
9746
5217
T
6906
3970
8717
2836
8177
9104
3970
5222
9746
8177
6748
3972
2599
5217
2836
5217
9104
T
6906
3970
2599
3902 + 3004 =T
2470 + 1500 =E
1038 + 1048 =D
2100 + 4648 =G
3385 + 6361 =N
5833 + 2884 =S
3643 + 1579 =I
1163 + 1673 =C
1405 + 2567 =Y
1114 + 1485 =R
3243 + 5861 =P
1090 + 1242 =L
3006 + 2211 =O
4154 + 5418 =H
4074 + 4103 =A
4828 + 4654 =V
0/16 letters found
Clue 2
Fractions of a number
The tower guard looked at the sky fleet roster and calculated what fraction of ships were docked.
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
8
38
34
9
37
24
24
24
25
W
8
24
30
24
23
37
12
34
30
24
37
40
37
27
34
29
25
9
31
1/10 of 80 =W
5/6 of 30 =A
1/3 of 87 =H
3/6 of 68 =T
1/2 of 62 =D
1/3 of 120 =L
1/8 of 72 =N
4/6 of 36 =S
3/6 of 74 =E
1/2 of 54 =F
3/10 of 100 =U
2/6 of 36 =C
2/4 of 46 =P
1/4 of 152 =I
0/14 letters found
Clue 3
Order of operations
The engineer evaluated the mechanical power gauge using the step by step manual formula.
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
55
58
75
33
60
27
27
65
60
48
37
65
22
22
T
55
32
48
48
75
35
74
26
65
74
7
60
23
58
T
55
54
27
65
22
58
20 + 7 × 5 =T
3 × 12 - 4 =U
16 + 6 × 7 =H
17 + 4 × 5 =W
65 + 5 × 2 =E
2 + 3 × 8 =Y
4 × 11 - 22 =S
4 × 11 - 11 =V
8 × 12 - 22 =B
12 × 5 - 25 =D
11 × 7 - 17 =I
11 × 5 - 1 =F
6 + 3 × 7 =L
10 × 7 - 22 =N
3 + 2 × 2 =R
11 × 3 - 10 =G
7 × 12 - 19 =A
0/17 letters found
Clue 4
Multiplication facts (1-12)
The chief observer counted supplies stored across multiple rows of cargo crates.
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
20
16
36
27
33
63
36
77
T
45
9
54
63
27
T
45
4
20
100
27
24
36
44
36
16
27
63
33
30
16
36
36
54
9 × 5 =T
7 × 11 =F
7 × 9 =L
9 × 6 =N
12 × 3 =E
2 × 8 =R
3 × 9 =A
9 × 1 =O
5 × 6 =G
4 × 6 =S
11 × 3 =D
10 × 10 =W
1 × 4 =C
2 × 10 =H
11 × 4 =M
0/15 letters found
Clue 5
Division facts (1-12) — the last clue
The sky marshal distributed the emergency beacon tokens equally among the patrol squads.
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
64 ÷ 8 = ?
84 ÷ 12 = ?
84 ÷ 7 = ?
20 ÷ 10 = ?
30 ÷ 5 = ?
27 ÷ 9 = ?
80 ÷ 8 = ?
18 ÷ 2 = ?
25 ÷ 5 = ?
28 ÷ 7 = ?
88 ÷ 8 = ?
Step 2 — cross out the sentence with each answer
1.The villain sounded a sonic horn, then drifted away on a solar dirigible.
2.The villain fired a grapple hook, then escaped in a gyro copter.
3.The villain activated a magnet glove, then sped off in a steam runner.
4.The villain dropped a smoke bomb, then boarded a jet biplane.
5.The villain deployed a glider pack, then zipped off on a cloud skiff.
6.The villain dropped a smoke bomb, then zipped off on a cloud skiff.
7.The villain activated a magnet glove, then drifted away on a solar dirigible.
8.The villain fired a grapple hook, then sped off in a steam runner.
9.The villain activated a magnet glove, then escaped in a gyro copter.
10.The villain sounded a sonic horn, then escaped in a gyro copter.
11.The villain sounded a sonic horn, then sped off in a steam runner.
12.The villain dropped a smoke bomb, then drifted away on a solar dirigible.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Cloud Compass Heist
Culprit: Nora Sterling (Sonic Horn · Solar Dirigible · Left Handed · Emerald Green · Bright Flash)
- Clue 1 (Addition): "THE VILLAIN DID NOT ESCAPE IN A GYRO COPTER"3902 + 3004 = 6906 (T) · 2470 + 1500 = 3970 (E) · 1038 + 1048 = 2086 (D) · 2100 + 4648 = 6748 (G) · 3385 + 6361 = 9746 (N) · 5833 + 2884 = 8717 (S) · 3643 + 1579 = 5222 (I) · 1163 + 1673 = 2836 (C) · 1405 + 2567 = 3972 (Y) · 1114 + 1485 = 2599 (R) · 3243 + 5861 = 9104 (P) · 1090 + 1242 = 2332 (L) · 3006 + 2211 = 5217 (O) · 4154 + 5418 = 9572 (H) · 4074 + 4103 = 8177 (A) · 4828 + 4654 = 9482 (V)
- Clue 2 (Fractions of a number): "WITNESS SAW SUSPECT USE LEFT HAND"1/10 of 80 = 8 (W) · 5/6 of 30 = 25 (A) · 1/3 of 87 = 29 (H) · 3/6 of 68 = 34 (T) · 1/2 of 62 = 31 (D) · 1/3 of 120 = 40 (L) · 1/8 of 72 = 9 (N) · 4/6 of 36 = 24 (S) · 3/6 of 74 = 37 (E) · 1/2 of 54 = 27 (F) · 3/10 of 100 = 30 (U) · 2/6 of 36 = 12 (C) · 2/4 of 46 = 23 (P) · 1/4 of 152 = 38 (I)
- Clue 3 (Order of operations): "THE VILLAIN WAS STUNNED BY A BRIGHT FLASH"20 + 7 × 5 = 55 (T) · 3 × 12 - 4 = 32 (U) · 16 + 6 × 7 = 58 (H) · 17 + 4 × 5 = 37 (W) · 65 + 5 × 2 = 75 (E) · 2 + 3 × 8 = 26 (Y) · 4 × 11 - 22 = 22 (S) · 4 × 11 - 11 = 33 (V) · 8 × 12 - 22 = 74 (B) · 12 × 5 - 25 = 35 (D) · 11 × 7 - 17 = 60 (I) · 11 × 5 - 1 = 54 (F) · 6 + 3 × 7 = 27 (L) · 10 × 7 - 22 = 48 (N) · 3 + 2 × 2 = 7 (R) · 11 × 3 - 10 = 23 (G) · 7 × 12 - 19 = 65 (A)
- Clue 4 (Multiplication facts (1-12)): "THREAD LEFT ON LATCH WAS EMERALD GREEN"9 × 5 = 45 (T) · 7 × 11 = 77 (F) · 7 × 9 = 63 (L) · 9 × 6 = 54 (N) · 12 × 3 = 36 (E) · 2 × 8 = 16 (R) · 3 × 9 = 27 (A) · 9 × 1 = 9 (O) · 5 × 6 = 30 (G) · 4 × 6 = 24 (S) · 11 × 3 = 33 (D) · 10 × 10 = 100 (W) · 1 × 4 = 4 (C) · 2 × 10 = 20 (H) · 11 × 4 = 44 (M)
- Clue 5 (Division facts (1-12)): surviving statement (box 1) → Nora Sterling64 ÷ 8 = 8 · 84 ÷ 12 = 7 · 84 ÷ 7 = 12 · 20 ÷ 10 = 2 · 30 ÷ 5 = 6 · 27 ÷ 9 = 3 · 80 ÷ 8 = 10 · 18 ÷ 2 = 9 · 25 ÷ 5 = 5 · 28 ÷ 7 = 4 · 88 ÷ 8 = 11
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Addition, Fractions of a number, Order of operations, Multiplication, Division
- Reading level
- grades 5-6
- Theme
- The Cloud Compass Heist — set in The Sky City of Aethelgard
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects