Math Crackers
← New mystery
Browse cases🖨 Print / Download PDF
🔎 Who olmost murderd cheaf josGrade 5Reading: grades 5-6SubtractionAdditionMultiplicationFractions of a number

Sabotage on the Starship Aegis

An emergency alarm echoes through the metallic corridors of the Aegis! Someone has breached the command bridge and targeted Chief Joshua Dax Zeno, trapping him in a stasis field. As the lead detective of Aegis Command, you must track down the culprit among the crew before they take complete control of the ship.

Suspects

Possible suspects

Cross off a row as each clue rules it out. On screen, tap a row.

21 of 21 still in play
NamePrimary AbilityInfiltrator GearBlaster GripHair StrandDefensive Barrier
Zeno Primegravity-bendingdecoy-droneleft-handed blasterspiked orange haircopper mesh
Grand Nagus Zekforcefield-shiftingsonic-disrupterleft-handed blasterspiked orange hairwater vapor
General Martokforcefield-shiftingjet-packright-handed blasterspiked orange hairmagnetic fields
Captain Siskoforcefield-shiftingsonic-disrupterleft-handed blasterspiked orange haircopper mesh
Keiko the Botanistgravity-bendinghover-bootsleft-handed blasterspiked orange hairmagnetic fields
Morn the Courierplasma-fusinghover-bootsleft-handed blasterspiked orange haircopper mesh
Commander Daxlaser-blastinghover-bootsleft-handed blastersilver chrome haircopper mesh
Leeta of Bajorplasma-fusinghover-bootsright-handed blastersilver chrome hairwater vapor
Enabran Taingravity-bendingdecoy-droneright-handed blastersilver chrome hairmagnetic fields
Doctor Bashircyber-hackingsonic-disrupterleft-handed blasterspiked orange hairmagnetic fields
Gul Dukatgravity-bendingsonic-disrupterleft-handed blasterneon blue hairmagnetic fields
Legate Damarplasma-fusingcloaking-shieldright-handed blasterspiked orange haircopper mesh
Security Chief Odoplasma-fusingjet-packleft-handed blastersilver chrome haircopper mesh
Lieutenant Worfplasma-fusinghover-bootsright-handed blasterspiked orange haircopper mesh
Counselor Ezrigravity-bendingdecoy-droneleft-handed blasterspiked orange hairmagnetic fields
Weyoun Sevengravity-bendinghover-bootsright-handed blastersilver chrome haircopper mesh
Science Officer Jadziaplasma-fusingjet-packleft-handed blasterneon blue hairmagnetic fields
Cadet Nogforcefield-shiftingjet-packleft-handed blasterspiked orange hairmagnetic fields
Agent Kiraforcefield-shiftingsonic-disrupterleft-handed blasterneon blue hairwater vapor
Ensign Garakforcefield-shiftingsonic-disrupterleft-handed blasterneon blue haircopper mesh
Officer Joshuagravity-bendingjet-packleft-handed blasterspiked orange hairmagnetic fields
Clue 1

Subtraction

We examine the shield power level logs. The total reserve has dropped after the blast, and we must subtract the lost units to find the system's baseline.

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
2754
6885
6793
7442
2615
6793
7738
5924
6660
7038
7560
6793
7962
7560
6793
7442
2615
7560
T
2754
2019
7442
6793
7738
7962
6793
4009
7560
6660
7962
8202
7560
2615
6793
5039 - 2285 =T
9562 - 2902 =Y
8904 - 1866 =F
8193 - 455 =A
8966 - 1406 =O
12401 - 4199 =R
3168 - 553 =N
6284 - 4265 =U
11698 - 3736 =D
5725 - 1716 =C
10858 - 4065 =E
11457 - 4015 =S
10798 - 4874 =K
10667 - 3782 =H
0/14 letters found
Clue 2

Addition

We gather the dropped battery packs near the chief's quarters. Tallying these together will help us calculate the total energy used during the getaway.

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
5302
3219
2669
3516
7789
4393
3093
T
5302
4795
4393
T
5302
T
5302
2669
8442
6298
3275
4393
3093
4212
4393
6867
2669
3516
5481
4393
7789
2669
7692
T
5302
5481
3140 + 2162 =T
1421 + 1248 =E
4500 + 3289 =L
2066 + 3415 =Y
2043 + 4255 =N
1399 + 2813 =M
2244 + 1272 =B
1803 + 2992 =P
1847 + 1372 =H
1426 + 1667 =S
4631 + 3811 =R
1651 + 1624 =W
4780 + 2912 =F
2081 + 4786 =D
1856 + 2537 =A
0/15 letters found
Clue 3

Multiplication facts (1-12)

The security cameras captured a repeating grid of escape pod docking bays. We multiply the rows of pods by the units per row to count the total pods.

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
7
50
30
110
15
77
77
16
15
4
84
50
18
4
4
30
100
84
T
7
63
44
4
70
144
16
70
4
30
T
7
15
35
28
15
30
77
100
84
7 × 1 =T
4 × 7 =F
12 × 7 =S
7 × 11 =L
10 × 10 =D
2 × 9 =U
10 × 7 =G
7 × 9 =R
7 × 5 =C
2 × 8 =A
12 × 12 =M
11 × 10 =V
3 × 5 =I
4 × 1 =N
10 × 5 =H
11 × 4 =O
5 × 6 =E
0/17 letters found
Clue 4

Fractions of a number

The command console was splashed with coolant. Only a specific fraction of the total canisters survived the impact, and we need to calculate that exact number.

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

A
33
29
36
38
10
34
30
19
16
A
33
15
21
34
8
A
33
38
16
28
A
33
29
40
34
17
32
19
15
32
8
34
36
A
33
15
34
40
2/6 of 99 =A
4/10 of 80 =T
4/10 of 90 =P
1/2 of 58 =S
1/6 of 96 =R
3/6 of 16 =H
6/8 of 40 =D
4/8 of 30 =N
5/8 of 64 =L
5/10 of 34 =F
4/10 of 85 =E
5/10 of 56 =W
3/6 of 38 =O
5/10 of 42 =G
4/8 of 20 =K
2/3 of 57 =I
0/16 letters found
Clue 5

Fractions of a number — the last clue

We analyze the ship's backup data banks. A fraction of the total memory drives were corrupted during the hack, and finding this amount unlocks the secure file.

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
1/3 of 30 = ?
1/3 of 24 = ?
1/3 of 33 = ?
4/10 of 10 = ?
2/10 of 45 = ?
2/10 of 10 = ?
1/6 of 30 = ?
3/4 of 8 = ?
1/4 of 28 = ?
2/6 of 9 = ?
1/2 of 2 = ?
Step 2 — cross out the sentence with each answer
1.The villain breached the airlock, then activated the alarm.
2.The villain drained the battery, then activated the alarm.
3.The villain hacked the mainframe, then teleported away.
4.The villain disabled the shields, then scrambled the logs.
5.The villain hacked the mainframe, then stole the master key.
6.The villain breached the airlock, then stole the master key.
7.The villain overloaded the core, then escaped into the void.
8.The villain drained the battery, then stole the master key.
9.The villain drained the battery, then escaped into the void.
10.The villain disabled the shields, then teleported away.
11.The villain disabled the shields, then stole the master key.
12.The villain hacked the mainframe, then scrambled the logs.
Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — Sabotage on the Starship Aegis

Culprit: Doctor Bashir (cyber-hacking · sonic-disrupter · left-handed blaster · spiked orange hair · magnetic fields)
  1. Clue 1 (Subtraction): "THE SNEAKY FOE DOES NOT USE A DECOY DRONE"
    5039 - 2285 = 2754 (T) · 9562 - 2902 = 6660 (Y) · 8904 - 1866 = 7038 (F) · 8193 - 455 = 7738 (A) · 8966 - 1406 = 7560 (O) · 12401 - 4199 = 8202 (R) · 3168 - 553 = 2615 (N) · 6284 - 4265 = 2019 (U) · 11698 - 3736 = 7962 (D) · 5725 - 1716 = 4009 (C) · 10858 - 4065 = 6793 (E) · 11457 - 4015 = 7442 (S) · 10798 - 4874 = 5924 (K) · 10667 - 3782 = 6885 (H)
  2. Clue 2 (Addition): "THE BLAST PATTERN WAS MADE BY A LEFTY"
    3140 + 2162 = 5302 (T) · 1421 + 1248 = 2669 (E) · 4500 + 3289 = 7789 (L) · 2066 + 3415 = 5481 (Y) · 2043 + 4255 = 6298 (N) · 1399 + 2813 = 4212 (M) · 2244 + 1272 = 3516 (B) · 1803 + 2992 = 4795 (P) · 1847 + 1372 = 3219 (H) · 1426 + 1667 = 3093 (S) · 4631 + 3811 = 8442 (R) · 1651 + 1624 = 3275 (W) · 4780 + 2912 = 7692 (F) · 2081 + 4786 = 6867 (D) · 1856 + 2537 = 4393 (A)
  3. Clue 3 (Multiplication facts (1-12)): "THE VILLAIN SHUNNED STRONG MAGNETIC FIELDS"
    7 × 1 = 7 (T) · 4 × 7 = 28 (F) · 12 × 7 = 84 (S) · 7 × 11 = 77 (L) · 10 × 10 = 100 (D) · 2 × 9 = 18 (U) · 10 × 7 = 70 (G) · 7 × 9 = 63 (R) · 7 × 5 = 35 (C) · 2 × 8 = 16 (A) · 12 × 12 = 144 (M) · 11 × 10 = 110 (V) · 3 × 5 = 15 (I) · 4 × 1 = 4 (N) · 10 × 5 = 50 (H) · 11 × 4 = 44 (O) · 5 × 6 = 30 (E)
  4. Clue 4 (Fractions of a number): "A SPIKED ORANGE HAIR WAS LEFT ON THE PANEL"
    2/6 of 99 = 33 (A) · 4/10 of 80 = 32 (T) · 4/10 of 90 = 36 (P) · 1/2 of 58 = 29 (S) · 1/6 of 96 = 16 (R) · 3/6 of 16 = 8 (H) · 6/8 of 40 = 30 (D) · 4/8 of 30 = 15 (N) · 5/8 of 64 = 40 (L) · 5/10 of 34 = 17 (F) · 4/10 of 85 = 34 (E) · 5/10 of 56 = 28 (W) · 3/6 of 38 = 19 (O) · 5/10 of 42 = 21 (G) · 4/8 of 20 = 10 (K) · 2/3 of 57 = 38 (I)
  5. Clue 5 (Fractions of a number): surviving statement (box 12) → Doctor Bashir
    1/3 of 30 = 10 · 1/3 of 24 = 8 · 1/3 of 33 = 11 · 4/10 of 10 = 4 · 2/10 of 45 = 9 · 2/10 of 10 = 2 · 1/6 of 30 = 5 · 3/4 of 8 = 6 · 1/4 of 28 = 7 · 2/6 of 9 = 3 · 1/2 of 2 = 1

About this mystery

Grade level
Grade 5 math
Math topics
Subtraction, Addition, Multiplication, Fractions of a number
Reading level
grades 5-6
Theme
Sabotage on the Starship Aegis — set in The high-tech command deck of the Starship Aegis, cruising through the Alpha Quadrant.
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

More free printable math cases

5th grade worksheetsAddition worksheetsSubtraction worksheetsMultiplication worksheetsFractions of a number worksheets🚀 Space worksheetsAll worksheets →
The Lunar Outpost Mystery
Grade 5
Mystery at Cretacia Park
Grade 5
The Mystery of the Autumn Manor Library
Grade 5
The Lunar Base Mystery
Grade 5