🤖 RobotsGrade 3Reading: grades 5-6RoundingAdditionSubtractionMultiplicationDivision
The Case of the Rogue Circuit
A rogue droid has swiped the golden microchip from the Gearspark Cybernetics Lab. Chief Engineer Vance needs your detective skills to scan the evidence, solve the data logs, and identify the thief.
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 | Wiring Color | System Glitch |
|---|---|---|---|---|---|
| Sprocket | Plasma Shield | EMP Blaster | Left Handed | Bright Red Wires | Magnet Wand |
| Axel | Laser Cutter | Jet Thruster | Right Handed | Silver Wires | Magnet Wand |
| Widget | Plasma Shield | Jet Thruster | Right Handed | Bright Red Wires | Magnet Wand |
| Rust | Rocket Boots | Jet Thruster | Left Handed | Bright Red Wires | Magnet Wand |
| Vector | Laser Cutter | Stealth Camo | Right Handed | Silver Wires | Magnet Wand |
| Circuit | Tractor Beam | Jet Thruster | Left Handed | Neon Blue Wires | Water Spray |
| Chrome | Laser Cutter | EMP Blaster | Right Handed | Neon Blue Wires | Water Spray |
| Radar | Rocket Boots | Grapple Hook | Left Handed | Bright Red Wires | High Pitch Whistle |
| Tesla | Laser Cutter | Solar Panel | Right Handed | Bright Red Wires | Magnet Wand |
| Gizmo | Laser Cutter | Solar Panel | Left Handed | Bright Red Wires | Magnet Wand |
| Dynamo | Plasma Shield | Solar Panel | Right Handed | Bright Red Wires | High Pitch Whistle |
| Beep | Rocket Boots | EMP Blaster | Right Handed | Bright Red Wires | Magnet Wand |
| Gearhead | Laser Cutter | Jet Thruster | Right Handed | Silver Wires | Water Spray |
| Volt | Plasma Shield | Stealth Camo | Left Handed | Neon Blue Wires | Water Spray |
| Byte | Tractor Beam | Solar Panel | Left Handed | Silver Wires | Magnet Wand |
| Pixel | Rocket Boots | Jet Thruster | Left Handed | Bright Red Wires | Water Spray |
| Ada | Sonic Screecher | Solar Panel | Left Handed | Bright Red Wires | Magnet Wand |
| Anvil | Plasma Shield | Solar Panel | Left Handed | Silver Wires | Magnet Wand |
| Copper | Rocket Boots | Stealth Camo | Left Handed | Silver Wires | Water Spray |
| Cog | Rocket Boots | Stealth Camo | Left Handed | Bright Red Wires | Magnet Wand |
| Turing | Sonic Screecher | Jet Thruster | Left Handed | Silver Wires | High Pitch Whistle |
Clue 1
Rounding
The security console scanner only reports approximate power readings rounded to the nearest ten.
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
40
800
900
9000
80
500
500
300
80
700
90
400
900
6000
700
400
T
40
600
6000
900
6000
T
40
900
300
500
T
40
800
8000
300
5000
400
Round 39 to the nearest tenT
Round 311 to the nearest hundredA
Round 8,569 to the nearest thousandV
Round 7,783 to the nearest thousandC
Round 4,649 to the nearest thousandM
Round 5,920 to the nearest thousandS
Round 78 to the nearest tenI
Round 923 to the nearest hundredE
Round 567 to the nearest hundredU
Round 87 to the nearest tenD
Round 473 to the nearest hundredL
Round 404 to the nearest hundredO
Round 760 to the nearest hundredH
Round 733 to the nearest hundredN
0/14 letters found
Clue 2
Addition
To calculate the total spare components needed for repairs, the lab computer adds two supply crates.
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
515
454
675
981
417
201
201
201
409
W
515
409
420
417
863
675
684
409
981
524
417
524
296
724
413
724
675
420
417
409
464
417
160 + 355 =W
108 + 93 =S
213 + 251 =V
181 + 343 =D
477 + 207 =H
278 + 142 =L
338 + 643 =N
172 + 124 =R
449 + 414 =F
262 + 155 =E
231 + 182 =B
325 + 399 =O
364 + 311 =T
256 + 153 =A
172 + 282 =I
0/15 letters found
Clue 3
Subtraction
Comparing energy reserves before and after the lab break in reveals the precise missing charge.
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
739
117
A
739
363
569
839
123
500
A
739
569
251
483
123
565
709
709
839
251
123
481
839
482
246
559
559
A
739
246
569
791 - 52 =A
249 - 132 =M
305 - 182 =T
817 - 252 =O
530 - 49 =H
457 - 206 =D
325 - 79 =I
1091 - 252 =E
812 - 329 =S
590 - 227 =G
889 - 330 =L
619 - 119 =W
823 - 341 =V
610 - 41 =N
750 - 41 =P
0/15 letters found
Clue 4
Multiplication facts (1-12)
Analyzing identical storage racks of microchips requires calculating equal rows of parts.
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
10
30
6
144
121
6
49
6
30
27
12
56
70
99
18
30
T
10
70
6
12
8
99
70
6
144
10 × 1 =T
2 × 4 =W
2 × 6 =D
10 × 3 =H
11 × 11 =C
8 × 7 =B
1 × 6 =E
12 × 12 =S
2 × 9 =G
9 × 3 =A
7 × 7 =N
7 × 10 =R
9 × 11 =I
0/13 letters found
Clue 5
Division facts (1-12) — the last clue
Distributing backup energy cells evenly across charging docks determines the power per station.
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
77 ÷ 7 = ?
24 ÷ 2 = ?
110 ÷ 11 = ?
84 ÷ 12 = ?
72 ÷ 8 = ?
6 ÷ 1 = ?
48 ÷ 6 = ?
33 ÷ 11 = ?
40 ÷ 8 = ?
24 ÷ 6 = ?
11 ÷ 11 = ?
Step 2 — cross out the sentence with each answer
1.The villain blasted a sonic screecher, then activated stealth camo.
2.The villain blasted a sonic screecher, then recharged with a solar panel.
3.The villain blasted a sonic screecher, then triggered an emp blaster.
4.The villain fired a tractor beam, then triggered an emp blaster.
5.The villain deployed a plasma shield, then recharged with a solar panel.
6.The villain fired a laser cutter, then fired a jet thruster.
7.The villain booted up rocket boots, then activated stealth camo.
8.The villain booted up rocket boots, then triggered an emp blaster.
9.The villain booted up rocket boots, then launched a grapple hook.
10.The villain deployed a plasma shield, then triggered an emp blaster.
11.The villain booted up rocket boots, then fired a jet thruster.
12.The villain fired a laser cutter, then recharged with a solar panel.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Rogue Circuit
Culprit: Ada (Sonic Screecher · Solar Panel · Left Handed · Bright Red Wires · Magnet Wand)
- Clue 1 (Rounding): "THE VILLAIN DOES NOT USE STEALTH CAMO"Round 39 to the nearest ten = 40 (T) · Round 311 to the nearest hundred = 300 (A) · Round 8,569 to the nearest thousand = 9000 (V) · Round 7,783 to the nearest thousand = 8000 (C) · Round 4,649 to the nearest thousand = 5000 (M) · Round 5,920 to the nearest thousand = 6000 (S) · Round 78 to the nearest ten = 80 (I) · Round 923 to the nearest hundred = 900 (E) · Round 567 to the nearest hundred = 600 (U) · Round 87 to the nearest ten = 90 (D) · Round 473 to the nearest hundred = 500 (L) · Round 404 to the nearest hundred = 400 (O) · Round 760 to the nearest hundred = 800 (H) · Round 733 to the nearest hundred = 700 (N)
- Clue 2 (Addition): "WITNESS SAW A LEFT HANDED ROBOT LEAVE"160 + 355 = 515 (W) · 108 + 93 = 201 (S) · 213 + 251 = 464 (V) · 181 + 343 = 524 (D) · 477 + 207 = 684 (H) · 278 + 142 = 420 (L) · 338 + 643 = 981 (N) · 172 + 124 = 296 (R) · 449 + 414 = 863 (F) · 262 + 155 = 417 (E) · 231 + 182 = 413 (B) · 325 + 399 = 724 (O) · 364 + 311 = 675 (T) · 256 + 153 = 409 (A) · 172 + 282 = 454 (I)
- Clue 3 (Subtraction): "A MAGNET WAND STOPPED THE VILLAIN"791 - 52 = 739 (A) · 249 - 132 = 117 (M) · 305 - 182 = 123 (T) · 817 - 252 = 565 (O) · 530 - 49 = 481 (H) · 457 - 206 = 251 (D) · 325 - 79 = 246 (I) · 1091 - 252 = 839 (E) · 812 - 329 = 483 (S) · 590 - 227 = 363 (G) · 889 - 330 = 559 (L) · 619 - 119 = 500 (W) · 823 - 341 = 482 (V) · 610 - 41 = 569 (N) · 750 - 41 = 709 (P)
- Clue 4 (Multiplication facts (1-12)): "THE SCENE HAD BRIGHT RED WIRES"10 × 1 = 10 (T) · 2 × 4 = 8 (W) · 2 × 6 = 12 (D) · 10 × 3 = 30 (H) · 11 × 11 = 121 (C) · 8 × 7 = 56 (B) · 1 × 6 = 6 (E) · 12 × 12 = 144 (S) · 2 × 9 = 18 (G) · 9 × 3 = 27 (A) · 7 × 7 = 49 (N) · 7 × 10 = 70 (R) · 9 × 11 = 99 (I)
- Clue 5 (Division facts (1-12)): surviving statement (box 2) → Ada77 ÷ 7 = 11 · 24 ÷ 2 = 12 · 110 ÷ 11 = 10 · 84 ÷ 12 = 7 · 72 ÷ 8 = 9 · 6 ÷ 1 = 6 · 48 ÷ 6 = 8 · 33 ÷ 11 = 3 · 40 ÷ 8 = 5 · 24 ÷ 6 = 4 · 11 ÷ 11 = 1
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 5-6
- Theme
- The Case of the Rogue Circuit — set in Gearspark Cybernetics Lab
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects