🚀 SpaceGrade 5Reading: grades 5-6Fractions of a numberMultiplicationMulti-step word problemsOrder of operations
The Mystery of Lunar Station Omega
A mysterious rogue astronaut has disrupted systems across Lunar Station Omega. The crew must analyze evidence and decode system logs to identify the saboteur before the next orbital passage.
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 Tool | Mobility Gear | Dominant Hand | Hairstyle | Sensory Vulnerability |
|---|---|---|---|---|---|
| Cyrus Drake | Magnetic Claw | Stealth Cloak | RIGHT HANDED | SHORT CROP | LOUD FREQUENCY |
| Freya Lind | Magnetic Claw | Jet Pack | LEFT HANDED | SHORT CROP | COLD DRAFT |
| Mira Sorokin | Ion Blaster | Stealth Cloak | RIGHT HANDED | BUZZ CUT | COLD DRAFT |
| Kai Tanaka | Laser Cutter | Jet Pack | LEFT HANDED | BUZZ CUT | COLD DRAFT |
| Hugo Silva | Laser Cutter | Stealth Cloak | LEFT HANDED | BUZZ CUT | COLD DRAFT |
| Leo Sterling | Laser Cutter | Gravity Boot | LEFT HANDED | BUZZ CUT | COLD DRAFT |
| Valerie Hayes | Laser Cutter | Hologram Decoy | LEFT HANDED | BUZZ CUT | COLD DRAFT |
| Maya Lin | Magnetic Claw | Stealth Cloak | LEFT HANDED | SHORT CROP | BRIGHT LIGHT |
| Lyra Frost | Magnetic Claw | Hologram Decoy | LEFT HANDED | BUZZ CUT | LOUD FREQUENCY |
| Zane Cooper | Plasma Torch | Thermal Shield | LEFT HANDED | BUZZ CUT | COLD DRAFT |
| Jax Mercer | Magnetic Claw | Hologram Decoy | LEFT HANDED | SHORT CROP | LOUD FREQUENCY |
| Nova Reyes | Plasma Torch | Jet Pack | RIGHT HANDED | PONYTAIL | LOUD FREQUENCY |
| Rowan Cruz | Laser Cutter | Jet Pack | RIGHT HANDED | PONYTAIL | COLD DRAFT |
| Nia Kamau | Magnetic Claw | Thermal Shield | RIGHT HANDED | PONYTAIL | COLD DRAFT |
| Aria Thorne | Ion Blaster | Hologram Decoy | RIGHT HANDED | BUZZ CUT | LOUD FREQUENCY |
| Orion Blake | Laser Cutter | Hologram Decoy | LEFT HANDED | SHORT CROP | LOUD FREQUENCY |
| Astrid Vance | Laser Cutter | Gravity Boot | RIGHT HANDED | BUZZ CUT | COLD DRAFT |
| Callum Connor | Laser Cutter | Gravity Boot | LEFT HANDED | SHORT CROP | BRIGHT LIGHT |
| Darius Vance | Sonic Scanner | Stealth Cloak | LEFT HANDED | PONYTAIL | COLD DRAFT |
| Tariq Mansoor | Plasma Torch | Thermal Shield | LEFT HANDED | PONYTAIL | BRIGHT LIGHT |
| Ezra Brooks | Plasma Torch | Gravity Boot | RIGHT HANDED | SHORT CROP | BRIGHT LIGHT |
Clue 1
Fractions of a number
Commander Vance analyzed the remaining oxygen canister fractions to narrow down the gear list.
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
3
9
7
18
26
32
23
T
3
7
2
25
10
23
7
18
12
23
T
3
2
18
7
26
34
25
26
17
37
T
3
28
32
23
23
T
3
5/10 of 6 =T
2/3 of 3 =U
2/6 of 51 =V
5/10 of 20 =D
4/6 of 51 =G
4/8 of 18 =H
4/8 of 14 =E
3/8 of 48 =S
5/6 of 30 =R
5/10 of 24 =N
2/5 of 70 =Y
3/6 of 64 =B
4/6 of 39 =A
1/6 of 138 =O
1/2 of 74 =I
0/15 letters found
Clue 2
Multiplication facts (1-12)
The chief engineer calculated total power grid surges across multiple station bays.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
S
20
121
36
35
18
28
45
88
32
55
80
S
20
S
20
56
55
72
70
32
121
50
45
56
70
54
10
121
10
18
121
3
70
28
18
2 × 10 =S
9 × 8 =W
5 × 9 =T
4 × 8 =L
5 × 7 =U
3 × 1 =P
12 × 3 =C
11 × 11 =E
9 × 2 =R
4 × 7 =I
10 × 8 =G
5 × 10 =F
10 × 7 =A
11 × 8 =Y
10 × 1 =D
6 × 9 =N
5 × 11 =O
8 × 7 =H
0/18 letters found
Clue 3
Multi-step word problems
Cadet Lin reviewed the steps of the airlock cycle log to trace the suspect's movements.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Someonescaredthevillainoffwith .
C
23
12
64
63
63
35
90
48
T
Astro-cadet earned 3 star charts in each of 2 rounds, plus 23 bonus star charts. Then 6 star charts were lost. How many star charts are left?C
Astro-cadet filled 4 boxes with 6 oxygen canisters each, then found 24 more oxygen canisters. How many oxygen canisters are there in all?F
There were 322 comm relays in all. 7 comm relays were set aside. The rest were shared equally among 9 space crew. How many comm relays did each get?R
Astro-cadet collected 97 oxygen canisters in the morning and 155 oxygen canisters in the afternoon, then split them equally among 4 space crew. How many oxygen canisters did each get?D
Astro-cadet earned 4 comm relays in each of 3 rounds, plus 85 bonus comm relays. Then 7 comm relays were lost. How many comm relays are left?A
Astro-cadet collected 18 quantum crystals in the morning and 18 quantum crystals in the afternoon, then split them equally among 3 space crew. How many quantum crystals did each get?O
There were 153 solar cells in all. 25 solar cells were set aside. The rest were shared equally among 2 space crew. How many solar cells did each get?L
0/7 letters found
Clue 4
Order of operations
The data analyst followed exact system priority codes to decrypt the security footage.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
H
12
27
45
19
16
46
19
27
17
36
16
53
49
43
17
36
16
H
12
49
24
27
54
43
69
69
10
43
46
3 + 3 × 3 =H
43 + 2 × 3 =O
12 × 6 - 26 =T
1 + 5 × 3 =S
10 × 8 - 27 =F
3 + 4 × 4 =R
12 × 5 - 15 =I
12 + 5 × 3 =A
7 × 11 - 8 =Z
19 + 8 × 3 =U
1 + 3 × 3 =C
18 + 4 × 9 =B
11 × 5 - 19 =D
14 + 5 × 2 =W
13 + 2 × 2 =N
0/15 letters found
Clue 5
Fractions of a number — the last clue
The science officer measured fractional light reflection from micro-dust near the control panel.
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
3/10 of 10 = ?
2/5 of 25 = ?
3/4 of 12 = ?
2/4 of 2 = ?
2/6 of 18 = ?
1/6 of 12 = ?
1/6 of 66 = ?
2/3 of 6 = ?
1/6 of 48 = ?
2/6 of 36 = ?
3/6 of 14 = ?
Step 2 — cross out the sentence with each answer
1.The villain unlocked the specimen lab, then marched away in a gravity boot.
2.The villain scrambled the navigation radar, then fled using a jet pack.
3.The villain overrode the station mainframe, then blocked laser fire with a thermal shield.
4.The villain unlocked the specimen lab, then escaped by dropping a hologram decoy.
5.The villain vented the coolant pressure, then escaped by dropping a hologram decoy.
6.The villain scrambled the navigation radar, then blocked laser fire with a thermal shield.
7.The villain drained the secondary battery, then snuck past sensors with a stealth cloak.
8.The villain scrambled the navigation radar, then marched away in a gravity boot.
9.The villain vented the coolant pressure, then snuck past sensors with a stealth cloak.
10.The villain vented the coolant pressure, then fled using a jet pack.
11.The villain drained the secondary battery, then blocked laser fire with a thermal shield.
12.The villain overrode the station mainframe, then snuck past sensors with a stealth cloak.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of Lunar Station Omega
Culprit: Valerie Hayes (Laser Cutter · Hologram Decoy · LEFT HANDED · BUZZ CUT · COLD DRAFT)
- Clue 1 (Fractions of a number): "THE SABOTEUR DOES NOT USE A GRAVITY BOOT"5/10 of 6 = 3 (T) · 2/3 of 3 = 2 (U) · 2/6 of 51 = 17 (V) · 5/10 of 20 = 10 (D) · 4/6 of 51 = 34 (G) · 4/8 of 18 = 9 (H) · 4/8 of 14 = 7 (E) · 3/8 of 48 = 18 (S) · 5/6 of 30 = 25 (R) · 5/10 of 24 = 12 (N) · 2/5 of 70 = 28 (Y) · 3/6 of 64 = 32 (B) · 4/6 of 39 = 26 (A) · 1/6 of 138 = 23 (O) · 1/2 of 74 = 37 (I)
- Clue 2 (Multiplication facts (1-12)): "SECURITY LOGS SHOW A LEFT HANDED REPAIR"2 × 10 = 20 (S) · 9 × 8 = 72 (W) · 5 × 9 = 45 (T) · 4 × 8 = 32 (L) · 5 × 7 = 35 (U) · 3 × 1 = 3 (P) · 12 × 3 = 36 (C) · 11 × 11 = 121 (E) · 9 × 2 = 18 (R) · 4 × 7 = 28 (I) · 10 × 8 = 80 (G) · 5 × 10 = 50 (F) · 10 × 7 = 70 (A) · 11 × 8 = 88 (Y) · 10 × 1 = 10 (D) · 6 × 9 = 54 (N) · 5 × 11 = 55 (O) · 8 × 7 = 56 (H)
- Clue 3 (Multi-step word problems): "COLD DRAFT"Astro-cadet earned 3 star charts in each of 2 rounds, plus 23 bonus star charts. Then 6 star charts were lost. How many star charts are left? = 23 (C) · Astro-cadet filled 4 boxes with 6 oxygen canisters each, then found 24 more oxygen canisters. How many oxygen canisters are there in all? = 48 (F) · There were 322 comm relays in all. 7 comm relays were set aside. The rest were shared equally among 9 space crew. How many comm relays did each get? = 35 (R) · Astro-cadet collected 97 oxygen canisters in the morning and 155 oxygen canisters in the afternoon, then split them equally among 4 space crew. How many oxygen canisters did each get? = 63 (D) · Astro-cadet earned 4 comm relays in each of 3 rounds, plus 85 bonus comm relays. Then 7 comm relays were lost. How many comm relays are left? = 90 (A) · Astro-cadet collected 18 quantum crystals in the morning and 18 quantum crystals in the afternoon, then split them equally among 3 space crew. How many quantum crystals did each get? = 12 (O) · There were 153 solar cells in all. 25 solar cells were set aside. The rest were shared equally among 2 space crew. How many solar cells did each get? = 64 (L)
- Clue 4 (Order of operations): "HAIR STRANDS FOUND SHOW A BUZZ CUT"3 + 3 × 3 = 12 (H) · 43 + 2 × 3 = 49 (O) · 12 × 6 - 26 = 46 (T) · 1 + 5 × 3 = 16 (S) · 10 × 8 - 27 = 53 (F) · 3 + 4 × 4 = 19 (R) · 12 × 5 - 15 = 45 (I) · 12 + 5 × 3 = 27 (A) · 7 × 11 - 8 = 69 (Z) · 19 + 8 × 3 = 43 (U) · 1 + 3 × 3 = 10 (C) · 18 + 4 × 9 = 54 (B) · 11 × 5 - 19 = 36 (D) · 14 + 5 × 2 = 24 (W) · 13 + 2 × 2 = 17 (N)
- Clue 5 (Fractions of a number): surviving statement (box 5) → Valerie Hayes3/10 of 10 = 3 · 2/5 of 25 = 10 · 3/4 of 12 = 9 · 2/4 of 2 = 1 · 2/6 of 18 = 6 · 1/6 of 12 = 2 · 1/6 of 66 = 11 · 2/3 of 6 = 4 · 1/6 of 48 = 8 · 2/6 of 36 = 12 · 3/6 of 14 = 7
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Fractions of a number, Multiplication, Multi-step word problems, Order of operations
- Reading level
- grades 5-6
- Theme
- The Mystery of Lunar Station Omega — set in Lunar Station Omega
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects