🚀 SpaceGrade 7Reading: grades 7-9IntegersPercentagesOrder of operationsExponentsMissing addends

The Sabotage on Station Aethelgard

When essential navigational telemetry went dark across Sector 7, command traced the outage to a deliberate breach in the primary communications array. Detectives must analyze log entries and station evidence to identify which crew member compromised the orbital grid.

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	Backup Gear	Observed Habit	Visor Tint	System Hazard
Agent Cross	Laser Cutter	Thruster Pack	Adjusts Visor	Gold Tint	Solar Flare
Major Drake	Plasma Torch	Stasis Field	Checks Wrist Gauge	Clear Tint	Static Shock
Sergeant Frost	Sonic Drill	Magnetic Clamp	Checks Wrist Gauge	Clear Tint	Low Oxygen
Cadet Rhys	Laser Cutter	Gravity Boots	Adjusts Visor	Blue Tint	Static Shock
Pilot Sterling	Plasma Torch	Stasis Field	Adjusts Visor	Clear Tint	Solar Flare
Director Stone	Thermal Welder	Stasis Field	Checks Wrist Gauge	Clear Tint	Solar Flare
Lieutenant Vega	Ion Beam	Gravity Boots	Checks Wrist Gauge	Blue Tint	Low Oxygen
Engineer Tanaka	Plasma Torch	Gravity Boots	Checks Wrist Gauge	Clear Tint	Solar Flare
Specialist Nova	Plasma Torch	Gravity Boots	Checks Wrist Gauge	Gold Tint	Static Shock
Analyst Quinn	Sonic Drill	Drone Swarm	Adjusts Visor	Blue Tint	Static Shock
Ranger Holt	Laser Cutter	Gravity Boots	Checks Wrist Gauge	Clear Tint	Solar Flare
Doctor Vance	Thermal Welder	Magnetic Clamp	Checks Wrist Gauge	Clear Tint	Solar Flare
Tech Yuri	Sonic Drill	Stasis Field	Checks Wrist Gauge	Blue Tint	Solar Flare
Navigator Sol	Ion Beam	Magnetic Clamp	Checks Wrist Gauge	Clear Tint	Solar Flare
Captain Mercer	Laser Cutter	Gravity Boots	Checks Wrist Gauge	Blue Tint	Solar Flare
Operator Kane	Laser Cutter	Gravity Boots	Adjusts Visor	Gold Tint	Solar Flare
Professor Orion	Ion Beam	Stasis Field	Checks Wrist Gauge	Gold Tint	Static Shock
Warden Cole	Laser Cutter	Drone Swarm	Checks Wrist Gauge	Clear Tint	Solar Flare
Officer Chen	Laser Cutter	Magnetic Clamp	Adjusts Visor	Blue Tint	Static Shock
Commander Hayes	Plasma Torch	Stasis Field	Adjusts Visor	Blue Tint	Low Oxygen
Chief Connor	Ion Beam	Magnetic Clamp	Checks Wrist Gauge	Blue Tint	Low Oxygen

Clue 1

Integers

The station mainframes recorded fluctuating sub-zero temperature differentials across breached compartments during the incident.

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

(-4) + 32 =T

(-6) + 17 =U

(-3) + 4 =M

8 - (-10) =L

(-15) + 20 =I

(-8) + 15 =E

21 - (-1) =D

4 - (-5) =G

20 - (-5) =C

(-6) + 27 =A

(-1) + 18 =H

17 - (-12) =N

(-2) + 32 =R

(-5) + 15 =S

(-15) + 27 =O

18 - (-5) =P

0/16 letters found

Clue 2

Percentages

Engineers computed emergency battery percentages required to keep secondary life support operational.

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

20% of 240 =W

25% of 108 =C

40% of 140 =M

40% of 10 =E

60% of 25 =R

60% of 10 =K

20% of 155 =T

75% of 48 =U

25% of 40 =G

20% of 35 =I

40% of 100 =A

10% of 20 =H

50% of 2 =N

60% of 95 =S

0/14 letters found

Clue 3

Order of operations

Orbital tracking computers calculated complex flight trajectories using standard order of operations rules.

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

104

117

104

113

104

43 + 4 × 2 =T

59 + 4 × 6 =F

72 + 8 × 3 =W

9 × 12 - 22 =D

97 + 4 × 4 =P

8 × 11 - 23 =U

10 × 12 - 3 =I

5 + 7 × 9 =A

1 + 5 × 4 =H

9 × 12 - 19 =O

42 + 6 × 8 =E

4 + 3 × 2 =L

2 + 7 × 2 =X

6 × 8 - 21 =R

10 × 11 - 6 =S

0/15 letters found

Clue 4

Exponents

Data transmission logs revealed exponential increases in signal bandwidth during unauthorized broadcast bursts.

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

121

216

324

125

121

256

125

289

256

289

121

216

256

121

169

125

324

11^2 =A

5^3 =S

17^2 =D

3^2 =T

18^2 =O

2^5 =I

16^2 =E

2^3 =N

9^2 =R

13^2 =V

6^2 =C

2^6 =K

6^3 =L

0/13 letters found

Clue 5

Missing addends — the last clue

Quartermasters audited remaining oxygen canisters against total inventory baselines to find the missing stock.

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

2 + ___ = 5

3 + ___ = 8

10 + ___ = 22

12 + ___ = 16

36 + ___ = 43

33 + ___ = 35

40 + ___ = 49

18 + ___ = 26

4 + ___ = 14

35 + ___ = 46

33 + ___ = 39

Step 2 — cross out the sentence with each answer

1.The villain sliced the main power conduit, then latched on with gravity boots.

2.The villain cut through the hull hatch, then secured cargo with a magnetic clamp.

3.The villain sliced the main power conduit, then controlled a drone swarm.

4.The villain cut through the hull hatch, then escaped using a thruster pack.

5.The villain cut through the hull hatch, then latched on with gravity boots.

6.The villain welded the emergency exit shut, then escaped using a thruster pack.

7.The villain sliced the main power conduit, then secured cargo with a magnetic clamp.

8.The villain drilled into the storage vault, then escaped using a thruster pack.

9.The villain welded the emergency exit shut, then latched on with gravity boots.

10.The villain blasted the comms relay, then escaped using a thruster pack.

11.The villain welded the emergency exit shut, then secured cargo with a magnetic clamp.

12.The villain welded the emergency exit shut, then trapped guards in a stasis field.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Sabotage on Station Aethelgard

Culprit: Ranger Holt (Laser Cutter · Gravity Boots · Checks Wrist Gauge · Clear Tint · Solar Flare)

Clue 1 (Integers): "THE CULPRIT DID NOT USE A MAGNETIC CLAMP"
(-4) + 32 = 28 (T) · (-6) + 17 = 11 (U) · (-3) + 4 = 1 (M) · 8 - (-10) = 18 (L) · (-15) + 20 = 5 (I) · (-8) + 15 = 7 (E) · 21 - (-1) = 22 (D) · 4 - (-5) = 9 (G) · 20 - (-5) = 25 (C) · (-6) + 27 = 21 (A) · (-1) + 18 = 17 (H) · 17 - (-12) = 29 (N) · (-2) + 32 = 30 (R) · (-5) + 15 = 10 (S) · (-15) + 27 = 12 (O) · 18 - (-5) = 23 (P)
Clue 2 (Percentages): "WITNESS SAW THEM CHECK THEIR WRIST GAUGE"
20% of 240 = 48 (W) · 25% of 108 = 27 (C) · 40% of 140 = 56 (M) · 40% of 10 = 4 (E) · 60% of 25 = 15 (R) · 60% of 10 = 6 (K) · 20% of 155 = 31 (T) · 75% of 48 = 36 (U) · 25% of 40 = 10 (G) · 20% of 35 = 7 (I) · 40% of 100 = 40 (A) · 10% of 20 = 2 (H) · 50% of 2 = 1 (N) · 60% of 95 = 57 (S)
Clue 3 (Order of operations): "THE SUIT SHOWED EXPOSURE TO A SOLAR FLARE"
43 + 4 × 2 = 51 (T) · 59 + 4 × 6 = 83 (F) · 72 + 8 × 3 = 96 (W) · 9 × 12 - 22 = 86 (D) · 97 + 4 × 4 = 113 (P) · 8 × 11 - 23 = 65 (U) · 10 × 12 - 3 = 117 (I) · 5 + 7 × 9 = 68 (A) · 1 + 5 × 4 = 21 (H) · 9 × 12 - 19 = 89 (O) · 42 + 6 × 8 = 90 (E) · 4 + 3 × 2 = 10 (L) · 2 + 7 × 2 = 16 (X) · 6 × 8 - 21 = 27 (R) · 10 × 11 - 6 = 104 (S)
Clue 4 (Exponents): "AIRLOCK SCANNERS DETECTED A CLEAR VISOR TINT"
11^2 = 121 (A) · 5^3 = 125 (S) · 17^2 = 289 (D) · 3^2 = 9 (T) · 18^2 = 324 (O) · 2^5 = 32 (I) · 16^2 = 256 (E) · 2^3 = 8 (N) · 9^2 = 81 (R) · 13^2 = 169 (V) · 6^2 = 36 (C) · 2^6 = 64 (K) · 6^3 = 216 (L)
Clue 5 (Missing addends): surviving statement (box 1) → Ranger Holt
2 + ___ = 5 = 3 · 3 + ___ = 8 = 5 · 10 + ___ = 22 = 12 · 12 + ___ = 16 = 4 · 36 + ___ = 43 = 7 · 33 + ___ = 35 = 2 · 40 + ___ = 49 = 9 · 18 + ___ = 26 = 8 · 4 + ___ = 14 = 10 · 35 + ___ = 46 = 11 · 33 + ___ = 39 = 6

About this mystery

Grade level: Grade 7 math
Math topics: Integers, Percentages, Order of operations, Exponents, Missing addends
Reading level: grades 7-9
Theme: The Sabotage on Station Aethelgard — set in Aethelgard Orbital Research Station
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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