🤖 RobotsGrade 5Reading: grades 3-4AdditionSubtractionMultiplicationFractions of a numberDivision

The Case of the Rogue Robot

A rogue robot sneaked into the Gearopolis Robot Factory and scrambled the master blueprint. Detective Nova needs your help to process the clues and find out which bot did it.

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	Secondary Module	Dominant Hand	Head Wiring	System Vulnerability
Turbo Tom	EMP Blast	Solar Battery	Left-handed	Silver Antenna	Magnet Wand
Sparky Sam	Laser Cutter	Shield Generator	Right-handed	Blue Neon Strips	Water Splash
Cable Carl	EMP Blast	Plasma Core	Left-handed	Blue Neon Strips	Rust Spray
Pixel Pete	EMP Blast	Solar Battery	Right-handed	Silver Antenna	Water Splash
Gizmo Gabe	EMP Blast	Plasma Core	Right-handed	Copper Wires	Magnet Wand
Matrix Maya	Grappling Hook	Shield Generator	Left-handed	Copper Wires	Magnet Wand
Data Daisy	Laser Cutter	Force Fields	Left-handed	Copper Wires	Water Splash
Rotor Rita	Laser Cutter	Plasma Core	Left-handed	Silver Antenna	Rust Spray
Circuit Sid	EMP Blast	Rocket Boots	Left-handed	Silver Antenna	Rust Spray
Nano Nina	Jet Thrusters	Force Fields	Right-handed	Copper Wires	Rust Spray
Sensor Seth	Jet Thrusters	Shield Generator	Left-handed	Silver Antenna	Rust Spray
Micro Mia	Jet Thrusters	Solar Battery	Right-handed	Silver Antenna	Water Splash
Laser Lily	EMP Blast	Force Fields	Right-handed	Silver Antenna	Rust Spray
Chip Charlie	Sonic Cannon	Force Fields	Left-handed	Silver Antenna	Rust Spray
Tracker Tim	Jet Thrusters	Plasma Core	Left-handed	Silver Antenna	Magnet Wand
Gears Garry	Jet Thrusters	Rocket Boots	Left-handed	Silver Antenna	Rust Spray
Radar Ray	Laser Cutter	Rocket Boots	Right-handed	Copper Wires	Rust Spray
Byte Bella	Sonic Cannon	Solar Battery	Left-handed	Blue Neon Strips	Rust Spray
Bolt Ben	Jet Thrusters	Plasma Core	Left-handed	Copper Wires	Magnet Wand
Gearhead Greta	Jet Thrusters	Rocket Boots	Right-handed	Blue Neon Strips	Rust Spray
Widget Wendy	Sonic Cannon	Shield Generator	Right-handed	Silver Antenna	Rust Spray

Clue 1

Addition

Technician Nova found extra batteries in the charging station. She added the totals to unlock the first clue.

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

6528

2951

7857

7797

5864

6172

3770

5864

5523

6800

7570

7857

3841

5523

7570

6528

5312

3841

7857

5586

7570

8773

4654

7857

5586

5864

7857

6172

6800

3841

4503 + 2025 =T

2694 + 2618 =U

1703 + 1248 =H

3202 + 1452 =C

5192 + 2665 =E

2455 + 4345 =D

1845 + 3678 =N

3035 + 5738 =R

1973 + 1868 =S

2420 + 3444 =I

1744 + 3842 =F

3673 + 4124 =V

2515 + 5055 =O

1403 + 2367 =A

4216 + 1956 =L

0/15 letters found

Clue 2

Subtraction

The main generator lost energy after the rogue bot struck. Nova subtracted the missing power units to reveal a code.

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

8248

1624

1529

8200

4059

5949

1589

4059

1072

2640

1589

5624

3404

1096

8248

1529

1053

8687

5624

4059

1072

8691

1589

5949

1529

3902

8248

1624

1589

1072

1053

10492 - 2244 =T

7563 - 1939 =S

2933 - 1837 =O

12543 - 3856 =U

4175 - 2586 =A

2100 - 1028 =N

7622 - 3563 =I

4553 - 651 =F

5405 - 4352 =D

7101 - 3697 =P

7588 - 4948 =W

3199 - 1575 =H

9843 - 1643 =V

4686 - 3157 =E

10026 - 1335 =G

10060 - 4111 =L

0/16 letters found

Clue 3

Multiplication facts (1-12)

Nova noticed equal rows of microchips stacked inside the mainframe. Multiplying the rows uncovered a secret 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.

120

100

110

120

132

120

12 × 10 =T

10 × 6 =B

4 × 5 =O

3 × 12 =H

5 × 9 =E

8 × 2 =P

11 × 6 =N

7 × 2 =W

10 × 8 =R

3 × 7 =Y

11 × 4 =L

11 × 12 =D

7 × 6 =S

10 × 11 =I

8 × 7 =U

10 × 10 =V

5 × 6 =A

0/17 letters found

Clue 4

Fractions of a number

Only a fraction of the security cameras were still online. Nova calculated that fraction to read the security report.

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

2/8 of 160 =A

2/10 of 20 =U

2/8 of 116 =E

3/10 of 90 =V

2/4 of 50 =K

1/3 of 96 =C

2/8 of 120 =F

2/5 of 20 =R

1/4 of 20 =D

2/4 of 46 =B

1/6 of 96 =O

1/5 of 190 =W

6/8 of 8 =T

2/6 of 33 =H

7/10 of 20 =N

2/10 of 65 =L

1/4 of 124 =S

3/6 of 30 =I

0/18 letters found

Clue 5

Division facts (1-12) — the last clue

The diagnostic data was split evenly across the backup servers. Dividing the files unlocked the final detail.

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

60 ÷ 5 = ?

10 ÷ 1 = ?

42 ÷ 7 = ?

8 ÷ 2 = ?

45 ÷ 5 = ?

55 ÷ 5 = ?

36 ÷ 12 = ?

21 ÷ 3 = ?

16 ÷ 2 = ?

8 ÷ 4 = ?

10 ÷ 10 = ?

Step 2 — cross out the sentence with each answer

1.The villain shatter the glass control box, then deflect the guard darts.

2.The villain shut down the security lights, then deflect the guard darts.

3.The villain shatter the glass control box, then power up the runaway cart.

4.The villain scale the factory wall, then block the alarm lasers.

5.The villain zoom over the security fence, then block the alarm lasers.

6.The villain slice through the vault lock, then power up the runaway cart.

7.The villain slice through the vault lock, then recharge their energy core.

8.The villain shatter the glass control box, then recharge their energy core.

9.The villain scale the factory wall, then deflect the guard darts.

10.The villain zoom over the security fence, then fly up to the ceiling vent.

11.The villain scale the factory wall, then power up the runaway cart.

12.The villain shut down the security lights, then fly up to the ceiling vent.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Case of the Rogue Robot

Culprit: Sensor Seth (Jet Thrusters · Shield Generator · Left-handed · Silver Antenna · Rust Spray)

Clue 1 (Addition): "THE VILLAIN DOES NOT USE FORCE FIELDS"
4503 + 2025 = 6528 (T) · 2694 + 2618 = 5312 (U) · 1703 + 1248 = 2951 (H) · 3202 + 1452 = 4654 (C) · 5192 + 2665 = 7857 (E) · 2455 + 4345 = 6800 (D) · 1845 + 3678 = 5523 (N) · 3035 + 5738 = 8773 (R) · 1973 + 1868 = 3841 (S) · 2420 + 3444 = 5864 (I) · 1744 + 3842 = 5586 (F) · 3673 + 4124 = 7797 (V) · 2515 + 5055 = 7570 (O) · 1403 + 2367 = 3770 (A) · 4216 + 1956 = 6172 (L)
Clue 2 (Subtraction): "THE VILLAIN WAS SPOTTED USING A LEFT HAND"
10492 - 2244 = 8248 (T) · 7563 - 1939 = 5624 (S) · 2933 - 1837 = 1096 (O) · 12543 - 3856 = 8687 (U) · 4175 - 2586 = 1589 (A) · 2100 - 1028 = 1072 (N) · 7622 - 3563 = 4059 (I) · 4553 - 651 = 3902 (F) · 5405 - 4352 = 1053 (D) · 7101 - 3697 = 3404 (P) · 7588 - 4948 = 2640 (W) · 3199 - 1575 = 1624 (H) · 9843 - 1643 = 8200 (V) · 4686 - 3157 = 1529 (E) · 10026 - 1335 = 8691 (G) · 10060 - 4111 = 5949 (L)
Clue 3 (Multiplication facts (1-12)): "THE VILLAIN WAS STOPPED BY A RUST SPRAY"
12 × 10 = 120 (T) · 10 × 6 = 60 (B) · 4 × 5 = 20 (O) · 3 × 12 = 36 (H) · 5 × 9 = 45 (E) · 8 × 2 = 16 (P) · 11 × 6 = 66 (N) · 7 × 2 = 14 (W) · 10 × 8 = 80 (R) · 3 × 7 = 21 (Y) · 11 × 4 = 44 (L) · 11 × 12 = 132 (D) · 7 × 6 = 42 (S) · 10 × 11 = 110 (I) · 8 × 7 = 56 (U) · 10 × 10 = 100 (V) · 5 × 6 = 30 (A)
Clue 4 (Fractions of a number): "A BROKEN SILVER ANTENNA WAS FOUND AT THE SCENE"
2/8 of 160 = 40 (A) · 2/10 of 20 = 4 (U) · 2/8 of 116 = 29 (E) · 3/10 of 90 = 27 (V) · 2/4 of 50 = 25 (K) · 1/3 of 96 = 32 (C) · 2/8 of 120 = 30 (F) · 2/5 of 20 = 8 (R) · 1/4 of 20 = 5 (D) · 2/4 of 46 = 23 (B) · 1/6 of 96 = 16 (O) · 1/5 of 190 = 38 (W) · 6/8 of 8 = 6 (T) · 2/6 of 33 = 11 (H) · 7/10 of 20 = 14 (N) · 2/10 of 65 = 13 (L) · 1/4 of 124 = 31 (S) · 3/6 of 30 = 15 (I)
Clue 5 (Division facts (1-12)): surviving statement (box 5) → Sensor Seth
60 ÷ 5 = 12 · 10 ÷ 1 = 10 · 42 ÷ 7 = 6 · 8 ÷ 2 = 4 · 45 ÷ 5 = 9 · 55 ÷ 5 = 11 · 36 ÷ 12 = 3 · 21 ÷ 3 = 7 · 16 ÷ 2 = 8 · 8 ÷ 4 = 2 · 10 ÷ 10 = 1

About this mystery

Grade level: Grade 5 math
Math topics: Addition, Subtraction, Multiplication, Fractions of a number, Division
Reading level: grades 3-4
Theme: The Case of the Rogue Robot — set in The Gearopolis Robot Factory
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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