Math Crackers
🚀 Pirates, Unicorns, MinecraftGrade 5Reading: grades 3-4AdditionMultiplicationFractions of a numberOrder of operationsDivision

The Great Space Dino Heist

The shiny Cosmic Diamond has been stolen from Starbase Raptor! A sneaky space dino pirate broke into the display room and zoomed off with the loot. Detective, analyze the clues to catch the robber!

Suspects

Possible suspects

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

21 of 21 still in play
NameDino GadgetShip ModuleDominant HandCrest ColorGlitched By
Astra AnchorsRocket BootsForce FieldRight-handedSolar Gold CrestWater Balloons
Laser LucySonic RoarHyper ScannerRight-handedSolar Gold CrestWater Balloons
Gears TritonLaser CannonStealth CloakRight-handedNeon Blue CrestMagnet Traps
Cosmo KrakenSonic RoarForce FieldLeft-handedSolar Gold CrestWater Balloons
Siren StarSonic RoarStealth CloakLeft-handedBright Green CrestMagnet Traps
Spike SprocketRocket BootsForce FieldRight-handedBright Green CrestMagnet Traps
Rusty RoverSonic RoarStealth CloakLeft-handedBright Green CrestCosmic Dust
Circuit SamTractor BeamSolar SailsRight-handedSolar Gold CrestWater Balloons
Nova NibblesSonic RoarForce FieldLeft-handedSolar Gold CrestMagnet Traps
Gizmo GatorSonic RoarForce FieldRight-handedBright Green CrestMagnet Traps
Titan TreadPlasma ShieldForce FieldRight-handedBright Green CrestMagnet Traps
Robby RaptorPlasma ShieldStealth CloakRight-handedSolar Gold CrestWater Balloons
Volt VelmaSonic RoarTurbo ThrustersLeft-handedBright Green CrestWater Balloons
TRex ByteTractor BeamHyper ScannerLeft-handedNeon Blue CrestMagnet Traps
Scrap BotLaser CannonStealth CloakLeft-handedNeon Blue CrestMagnet Traps
Ziggy ZirconTractor BeamForce FieldLeft-handedSolar Gold CrestCosmic Dust
Sparky FangLaser CannonHyper ScannerRight-handedBright Green CrestWater Balloons
Comet ClawRocket BootsSolar SailsRight-handedNeon Blue CrestMagnet Traps
Pixel PeteLaser CannonHyper ScannerRight-handedSolar Gold CrestCosmic Dust
Captain RexRocket BootsSolar SailsLeft-handedNeon Blue CrestMagnet Traps
Orbit OrbitSonic RoarStealth CloakRight-handedSolar Gold CrestWater Balloons
Clue 1

Addition

To tally up the total fuel canisters left in the dock, add these amounts together.

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
6784
4893
2070
5263
8599
2070
5615
9700
6272
5263
6035
5263
2155
2070
9090
T
6784
8907
9634
2070
5263
8599
9634
T
6784
6035
5263
2070
5263
9634
5588
5615
4305
5263
5615
9721
5588
5263
4569 + 2215 =T
2531 + 3741 =Y
2123 + 3140 =S
3397 + 1496 =H
4488 + 4111 =N
3719 + 1896 =A
5322 + 4399 =I
2859 + 6048 =D
4749 + 4341 =C
4960 + 4674 =O
6275 + 3425 =K
2660 + 3375 =U
2586 + 3002 =L
2484 + 1821 =R
1388 + 682 =E
752 + 1403 =P
0/16 letters found
Clue 2

Multiplication facts (1-12)

The pirate ship left rows of supply crates behind. Multiply the rows to count them all.

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
96
12
56
30
6
25
110
81
35
T
96
28
110
56
81
64
T
96
56
90
30
28
2
T
96
81
28
25
144
81
35
22
12
T
96
12
64
2
90
56
90
12 × 8 =T
5 × 5 =L
3 × 10 =C
2 × 6 =H
1 × 6 =U
5 × 7 =I
12 × 12 =S
9 × 10 =D
7 × 4 =O
1 × 2 =N
11 × 10 =P
9 × 9 =R
8 × 7 =E
2 × 11 =G
8 × 8 =A
0/15 letters found
Clue 3

Fractions of a number

Only a fraction of the power grid is working. Calculate this fraction of the total battery.

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
28
23
5
31
2
10
23
12
12
20
20
36
29
15
23
7
29
31
21
23
29
17
20
2
5
15
16
2
15
7
16
5
1/2 of 56 =W
2/3 of 15 =B
4/8 of 40 =O
4/8 of 42 =D
2/8 of 64 =I
2/4 of 46 =A
3/6 of 62 =E
1/8 of 120 =C
1/6 of 72 =L
1/10 of 50 =T
2/10 of 145 =S
4/8 of 14 =U
1/10 of 20 =R
1/5 of 85 =H
8/10 of 45 =N
0/15 letters found
Clue 4

Order of operations

Follow the step by step security passcode formula to unlock the computer log.

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

G
9
31
63
22
54
47
57
46
25
46
54
47
36
10
46
80
57
47
57
65
31
30
41
22
41
57
36
47
25
33
57
63
31
54
56
5 + 2 × 2 =G
4 × 11 - 19 =T
12 + 6 × 3 =U
12 + 6 × 7 =C
4 + 3 × 2 =P
5 × 7 - 2 =H
4 × 10 - 9 =O
10 × 10 - 20 =W
4 + 3 × 6 =D
21 + 4 × 9 =E
7 × 12 - 21 =L
11 × 8 - 23 =F
4 + 8 × 4 =A
11 × 7 - 21 =K
7 × 8 - 10 =S
6 × 11 - 19 =R
14 + 9 × 3 =N
0/17 letters found
Clue 5

Division facts (1-12) — the last clue

Divide the remaining energy cells equally among the guard bots to reset the alarm.

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
25 ÷ 5 = ?
27 ÷ 9 = ?
99 ÷ 9 = ?
10 ÷ 5 = ?
28 ÷ 4 = ?
20 ÷ 5 = ?
60 ÷ 6 = ?
72 ÷ 8 = ?
72 ÷ 6 = ?
8 ÷ 1 = ?
4 ÷ 4 = ?
Step 2 — cross out the sentence with each answer
1.The villain snatched the golden prize with a tractor beam, then deflected defense lasers with a force field.
2.The villain snatched the golden prize with a tractor beam, then escaped using turbo thrusters.
3.The villain zoomed over the security fence on rocket boots, then deflected defense lasers with a force field.
4.The villain blasted open the vault with a laser cannon, then vanished behind a stealth cloak.
5.The villain shattered the glass display with a sonic roar, then scanned the escape path with a hyper scanner.
6.The villain blocked the alarm beams with a plasma shield, then vanished behind a stealth cloak.
7.The villain zoomed over the security fence on rocket boots, then escaped using turbo thrusters.
8.The villain blocked the alarm beams with a plasma shield, then deflected defense lasers with a force field.
9.The villain blasted open the vault with a laser cannon, then sailed away on solar sails.
10.The villain blasted open the vault with a laser cannon, then escaped using turbo thrusters.
11.The villain shattered the glass display with a sonic roar, then vanished behind a stealth cloak.
12.The villain snatched the golden prize with a tractor beam, then vanished behind a stealth cloak.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 5 math
Math topics
Addition, Multiplication, Fractions of a number, Order of operations, Division
Reading level
grades 3-4
Theme
The Great Space Dino Heist — set in Starbase Raptor
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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