🚀 SpaceGrade 3Reading: grades 7-9MultiplicationRoundingAdditionSubtractionDivision
The Nebula Station Sabotage
Someone tampered with the main gravity core on Orbital Station Starlight! We must decode the evidence log to identify the culprit before the entire station drifts out of alignment.
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 Gear | Secondary Gear | Visor Style | Suit Trim | Equipment Flaw |
|---|---|---|---|---|---|
| Alan Shepard | Plasma Cutter | Holo Shield | Polarized Visor | Cosmic Silver Trim | Faulty Thruster Valve |
| Ellen Ochoa | Laser Welder | Pulse Beacon | Polarized Visor | Neon Blue Trim | Faulty Thruster Valve |
| Sunita Williams | Plasma Cutter | Pulse Beacon | Polarized Visor | Neon Blue Trim | Jammed Airlock Latch |
| Peggy Whitson | Laser Welder | Signal Jammer | Clear Visor | Solar Gold Trim | Faulty Thruster Valve |
| Jessica Meir | Thruster Pack | Holo Shield | Polarized Visor | Neon Blue Trim | Faulty Thruster Valve |
| Bernard Harris | Gravity Boots | Holo Shield | Polarized Visor | Neon Blue Trim | Faulty Thruster Valve |
| Scott Kelly | Gravity Boots | Data Pad | Polarized Visor | Cosmic Silver Trim | Faulty Thruster Valve |
| Sally Ride | Gravity Boots | Pulse Beacon | Clear Visor | Solar Gold Trim | Faulty Thruster Valve |
| Samantha Cristoforetti | Plasma Cutter | Signal Jammer | Polarized Visor | Cosmic Silver Trim | Glitchy Oxygen Sensor |
| Leland Melvin | Laser Welder | Holo Shield | Clear Visor | Neon Blue Trim | Faulty Thruster Valve |
| John Glenn | Laser Welder | Data Pad | Polarized Visor | Neon Blue Trim | Jammed Airlock Latch |
| Robert Crippen | Plasma Cutter | Pulse Beacon | Clear Visor | Cosmic Silver Trim | Faulty Thruster Valve |
| Chris Hadfield | Laser Welder | Pulse Beacon | Clear Visor | Solar Gold Trim | Glitchy Oxygen Sensor |
| Mae Jemison | Thruster Pack | Signal Jammer | Polarized Visor | Solar Gold Trim | Jammed Airlock Latch |
| Anousheh Ansari | Thruster Pack | Data Pad | Clear Visor | Cosmic Silver Trim | Faulty Thruster Valve |
| Buzz Aldrin | Magnetic Tether | Thermal Scanner | Polarized Visor | Cosmic Silver Trim | Glitchy Oxygen Sensor |
| Mark Kelly | Thruster Pack | Holo Shield | Clear Visor | Solar Gold Trim | Glitchy Oxygen Sensor |
| Guion Bluford | Gravity Boots | Signal Jammer | Polarized Visor | Neon Blue Trim | Faulty Thruster Valve |
| Christina Koch | Gravity Boots | Signal Jammer | Polarized Visor | Solar Gold Trim | Faulty Thruster Valve |
| Michael Collins | Gravity Boots | Thermal Scanner | Polarized Visor | Neon Blue Trim | Faulty Thruster Valve |
| Kalpana Chawla | Laser Welder | Pulse Beacon | Polarized Visor | Cosmic Silver Trim | Jammed Airlock Latch |
Clue 1
Multiplication facts (1-12)
Analyzing the fuel pod grid, we calculated the total energy output across several identical rows.
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
42
2
4
90
30
36
T
55
2
27
50
63
36
2
4
70
36
T
55
27
4
2
90
14
27
40
4
2
30
2
90
32
36
70
5 × 11 =T
10 × 5 =R
7 × 2 =P
10 × 3 =B
3 × 9 =U
6 × 7 =H
7 × 10 =N
9 × 10 =A
7 × 9 =D
1 × 2 =E
4 × 8 =C
6 × 6 =O
4 × 10 =L
2 × 2 =S
0/14 letters found
Clue 2
Rounding
The long-range radar scanner could only estimate sensor distance to the nearest hundred kilometers.
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
3000
200
5000
40
6000
600
600
600
300
W
3000
4000
6000
30
700
6000
50
5000
200
20
6000
9000
7000
700
300
4000
200
90
6000
500
60
700
300
600
600
Round 2,691 to the nearest thousandW
Round 616 to the nearest hundredS
Round 718 to the nearest hundredL
Round 8,529 to the nearest thousandP
Round 19 to the nearest tenV
Round 87 to the nearest tenZ
Round 51 to the nearest tenC
Round 26 to the nearest tenF
Round 276 to the nearest hundredA
Round 62 to the nearest tenG
Round 6,292 to the nearest thousandE
Round 4,627 to the nearest thousandT
Round 43 to the nearest tenN
Round 6,665 to the nearest thousandO
Round 503 to the nearest hundredD
Round 180 to the nearest hundredI
Round 3,601 to the nearest thousandR
0/17 letters found
Clue 3
Addition
Tallying up the emergency battery charges gave us the combined reserve power total.
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
413
921
668
668
810
203
963
949
668
T
413
785
963
840
558
558
668
881
T
413
963
881
963
633
558
T
413
770
T
413
921
785
633
810
T
413
668
785
940
963
558
940
668
149 + 264 =T
298 + 542 =I
508 + 413 =H
509 + 372 =F
136 + 67 =C
209 + 349 =L
376 + 257 =U
331 + 609 =V
299 + 486 =R
314 + 496 =S
314 + 354 =E
237 + 533 =Y
539 + 410 =P
617 + 346 =A
0/14 letters found
Clue 4
Subtraction
Comparing atmospheric pressure readings before and after the leak revealed the loss.
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
377
670
174
842
298
399
387
480
399
564
842
873
174
399
228
399
842
873
399
387
270
399
581
270
719
873
251
399
564
174
584
480
716 - 339 =S
457 - 58 =E
1091 - 372 =B
689 - 105 =I
358 - 184 =R
621 - 351 =N
673 - 375 =P
959 - 117 =A
417 - 166 =U
623 - 59 =T
916 - 335 =O
313 - 85 =V
471 - 84 =D
1233 - 360 =L
686 - 16 =C
768 - 288 =M
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
Dividing the backup rations equally among the research pods determined each unit's share.
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
48 ÷ 8 = ?
15 ÷ 5 = ?
132 ÷ 12 = ?
22 ÷ 11 = ?
1 ÷ 1 = ?
84 ÷ 7 = ?
56 ÷ 7 = ?
80 ÷ 8 = ?
24 ÷ 6 = ?
35 ÷ 7 = ?
72 ÷ 8 = ?
Step 2 — cross out the sentence with each answer
1.The villain sabotaged the primary gravity core, then wiped the data pad records.
2.The villain overloaded the station power grid, then left a pulse beacon ping.
3.The villain bypassed the airlock safety lock, then deployed a holo shield barrier.
4.The villain bypassed the airlock safety lock, then activated a signal jammer.
5.The villain sabotaged the primary gravity core, then scrambled thermal scanner logs.
6.The villain overloaded the station power grid, then activated a signal jammer.
7.The villain overloaded the station power grid, then deployed a holo shield barrier.
8.The villain sabotaged the primary gravity core, then activated a signal jammer.
9.The villain bypassed the airlock safety lock, then left a pulse beacon ping.
10.The villain sabotaged the primary gravity core, then deployed a holo shield barrier.
11.The villain overloaded the station power grid, then scrambled thermal scanner logs.
12.The villain vented fuel from the main thrusters, then wiped the data pad records.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Nebula Station Sabotage
Culprit: Bernard Harris (Gravity Boots · Holo Shield · Polarized Visor · Neon Blue Trim · Faulty Thruster Valve)
- Clue 1 (Multiplication facts (1-12)): "THE SABOTEUR DOES NOT USE A PULSE BEACON"5 × 11 = 55 (T) · 10 × 5 = 50 (R) · 7 × 2 = 14 (P) · 10 × 3 = 30 (B) · 3 × 9 = 27 (U) · 6 × 7 = 42 (H) · 7 × 10 = 70 (N) · 9 × 10 = 90 (A) · 7 × 9 = 63 (D) · 1 × 2 = 2 (E) · 4 × 8 = 32 (C) · 6 × 6 = 36 (O) · 4 × 10 = 40 (L) · 2 × 2 = 4 (S)
- Clue 2 (Rounding): "WITNESS SAW REFLECTIVE POLARIZED GLASS"Round 2,691 to the nearest thousand = 3000 (W) · Round 616 to the nearest hundred = 600 (S) · Round 718 to the nearest hundred = 700 (L) · Round 8,529 to the nearest thousand = 9000 (P) · Round 19 to the nearest ten = 20 (V) · Round 87 to the nearest ten = 90 (Z) · Round 51 to the nearest ten = 50 (C) · Round 26 to the nearest ten = 30 (F) · Round 276 to the nearest hundred = 300 (A) · Round 62 to the nearest ten = 60 (G) · Round 6,292 to the nearest thousand = 6000 (E) · Round 4,627 to the nearest thousand = 5000 (T) · Round 43 to the nearest ten = 40 (N) · Round 6,665 to the nearest thousand = 7000 (O) · Round 503 to the nearest hundred = 500 (D) · Round 180 to the nearest hundred = 200 (I) · Round 3,601 to the nearest thousand = 4000 (R)
- Clue 3 (Addition): "THE ESCAPE TRAIL LEFT A FAULTY THRUSTER VALVE"149 + 264 = 413 (T) · 298 + 542 = 840 (I) · 508 + 413 = 921 (H) · 509 + 372 = 881 (F) · 136 + 67 = 203 (C) · 209 + 349 = 558 (L) · 376 + 257 = 633 (U) · 331 + 609 = 940 (V) · 299 + 486 = 785 (R) · 314 + 496 = 810 (S) · 314 + 354 = 668 (E) · 237 + 533 = 770 (Y) · 539 + 410 = 949 (P) · 617 + 346 = 963 (A)
- Clue 4 (Subtraction): "SCRAPED METAL REVEALED NEON BLUE TRIM"716 - 339 = 377 (S) · 457 - 58 = 399 (E) · 1091 - 372 = 719 (B) · 689 - 105 = 584 (I) · 358 - 184 = 174 (R) · 621 - 351 = 270 (N) · 673 - 375 = 298 (P) · 959 - 117 = 842 (A) · 417 - 166 = 251 (U) · 623 - 59 = 564 (T) · 916 - 335 = 581 (O) · 313 - 85 = 228 (V) · 471 - 84 = 387 (D) · 1233 - 360 = 873 (L) · 686 - 16 = 670 (C) · 768 - 288 = 480 (M)
- Clue 5 (Division facts (1-12)): surviving statement (box 7) → Bernard Harris48 ÷ 8 = 6 · 15 ÷ 5 = 3 · 132 ÷ 12 = 11 · 22 ÷ 11 = 2 · 1 ÷ 1 = 1 · 84 ÷ 7 = 12 · 56 ÷ 7 = 8 · 80 ÷ 8 = 10 · 24 ÷ 6 = 4 · 35 ÷ 7 = 5 · 72 ÷ 8 = 9
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Multiplication, Rounding, Addition, Subtraction, Division
- Reading level
- grades 7-9
- Theme
- The Nebula Station Sabotage — set in Orbital Station Starlight
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects