🤖 RobotsGrade 3Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Great Robo-Factory Heist
The Golden Gear has been stolen from the Gearville Robo-Factory! A rogue bot snuck past the lasers and grabbed it. Help Detective Bolt scan the assembly line, solve the math puzzles, and find the thief before they rust away!
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 | Backup Gear | Active Sensor | Head Antenna | System Vulnerability |
|---|---|---|---|---|---|
| Lovelace | Jet Thruster | Search Light | Right LED Blinks | Glass Dome | Rust Spray |
| Rusty | Laser Welder | Rocket Boots | Right LED Blinks | Wire Mohawk | Rust Spray |
| Clank | Laser Welder | Rocket Boots | Right LED Blinks | Dish Antenna | Rust Spray |
| Baxter | Jet Thruster | Solar Charger | Right LED Blinks | Glass Dome | Salt Water |
| Hal | Drill Arm | Rocket Boots | Right LED Blinks | Glass Dome | Magnet Wand |
| Gort | Jet Thruster | Plasma Shield | Left LED Blinks | Glass Dome | Salt Water |
| Gizmo | Mega Magnet | Cargo Hook | Right LED Blinks | Wire Mohawk | Magnet Wand |
| Zinc | Drill Arm | Rocket Boots | Left LED Blinks | Glass Dome | Salt Water |
| Bolt | Sonic Screamer | Solar Charger | Right LED Blinks | Dish Antenna | Rust Spray |
| Sprocket | Sonic Screamer | Rocket Boots | Left LED Blinks | Dish Antenna | Rust Spray |
| Vector | Mega Magnet | Rocket Boots | Right LED Blinks | Dish Antenna | Salt Water |
| Digit | Drill Arm | Cargo Hook | Right LED Blinks | Dish Antenna | Salt Water |
| Sparky | Laser Welder | Solar Charger | Right LED Blinks | Dish Antenna | Magnet Wand |
| Micro | Sonic Screamer | Solar Charger | Right LED Blinks | Glass Dome | Salt Water |
| Turing | Laser Welder | Rocket Boots | Left LED Blinks | Wire Mohawk | Magnet Wand |
| Astro | Sonic Screamer | Solar Charger | Left LED Blinks | Wire Mohawk | Rust Spray |
| Robby | Sonic Screamer | Cargo Hook | Right LED Blinks | Glass Dome | Salt Water |
| Asimov | Mega Magnet | Plasma Shield | Right LED Blinks | Glass Dome | Salt Water |
| Brass | Sonic Screamer | Solar Charger | Right LED Blinks | Wire Mohawk | Rust Spray |
| Cyber | Jet Thruster | Search Light | Left LED Blinks | Dish Antenna | Rust Spray |
| Copper | Laser Welder | Rocket Boots | Right LED Blinks | Glass Dome | Salt Water |
Clue 1
Rounding
The factory radar screen only shows rounded numbers for power usage. We need to round these signals to find the robot's main blueprint!
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
500
30
8000
3000
7000
200
900
600
3000
600
T
500
50
7000
70
800
4000
T
500
30
8000
90
50
7000
4000
6000
7000
4000
30
9000
8000
50
200
Round 529 to the nearest hundredT
Round 73 to the nearest tenC
Round 90 to the nearest tenP
Round 4,052 to the nearest thousandS
Round 54 to the nearest tenL
Round 9,104 to the nearest thousandI
Round 7,254 to the nearest thousandA
Round 779 to the nearest hundredK
Round 177 to the nearest hundredD
Round 896 to the nearest hundredR
Round 6,413 to the nearest thousandM
Round 2,694 to the nearest thousandB
Round 26 to the nearest tenH
Round 7,697 to the nearest thousandE
Round 637 to the nearest hundredO
0/15 letters found
Clue 2
Addition
We found some spare gear piles near the assembly line. Let us add up the total parts to see which system was modified.
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
907
828
554
856
481
850
563
632
249
T
907
966
850
626
946
828
554
946
T
907
828
554
249
632
632
249
630
828
T
907
850
249
630
828
T
907
441 + 466 =T
351 + 203 =E
471 + 379 =L
394 + 552 =S
415 + 441 =C
194 + 436 =G
560 + 406 =F
109 + 140 =I
365 + 261 =A
303 + 178 =U
199 + 364 =P
420 + 212 =R
293 + 535 =H
0/13 letters found
Clue 3
Subtraction
The energy vault lost a lot of battery juice during the break-in. We must subtract the leftover power to see what the robber took.
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
290
636
330
577
S
290
778
456
227
556
S
290
577
330
720
297
577
720
169
406
S
290
778
164
720
S
290
720
778
169
659
124
525
297
227
642 - 352 =S
902 - 182 =T
619 - 392 =N
406 - 76 =L
297 - 133 =U
670 - 93 =A
537 - 81 =I
896 - 237 =M
810 - 32 =H
698 - 142 =G
320 - 151 =E
613 - 88 =O
371 - 247 =D
498 - 201 =W
588 - 182 =R
810 - 174 =P
0/16 letters found
Clue 4
Multiplication facts (1-12)
The security camera took pictures in groups of four. We can multiply the rows of photos to unlock the next file!
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
48
77
5
45
80
45
121
60
44
90
A
48
7
7
70
121
4
45
72
A
48
7
60
121
50
12
70
100
45
14
45
12 × 4 =A
12 × 6 =W
7 × 11 =P
5 × 10 =U
4 × 1 =M
1 × 5 =I
8 × 10 =C
2 × 6 =N
10 × 9 =L
11 × 11 =O
1 × 7 =S
9 × 5 =E
7 × 2 =R
5 × 12 =F
4 × 11 =G
10 × 10 =H
10 × 7 =D
0/17 letters found
Clue 5
Division facts (1-12) — the last clue
The oil canisters need to be shared equally among the robot guards. Let us divide the boxes to get the final clue!
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
9 ÷ 1 = ?
12 ÷ 1 = ?
9 ÷ 3 = ?
18 ÷ 3 = ?
64 ÷ 8 = ?
16 ÷ 8 = ?
7 ÷ 7 = ?
132 ÷ 12 = ?
4 ÷ 1 = ?
10 ÷ 1 = ?
5 ÷ 1 = ?
Step 2 — cross out the sentence with each answer
1.The villain pulls the metal door off with a mega magnet, then escapes into the sky with rocket boots.
2.The villain shatters the glass case with a sonic screamer, then blocks the alarm rays with a plasma shield.
3.The villain blasts open the vault with a laser welder, then escapes into the sky with rocket boots.
4.The villain pulls the metal door off with a mega magnet, then blocks the alarm rays with a plasma shield.
5.The villain tunnels through the concrete with a drill arm, then blocks the alarm rays with a plasma shield.
6.The villain shatters the glass case with a sonic screamer, then escapes into the sky with rocket boots.
7.The villain shatters the glass case with a sonic screamer, then powers up using a solar charger.
8.The villain flies into the laboratory with a jet thruster, then lifts the prize using a cargo hook.
9.The villain shatters the glass case with a sonic screamer, then lifts the prize using a cargo hook.
10.The villain blasts open the vault with a laser welder, then spots the exit path with a search light.
11.The villain tunnels through the concrete with a drill arm, then spots the exit path with a search light.
12.The villain flies into the laboratory with a jet thruster, then powers up using a solar charger.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Robo-Factory Heist
Culprit: Micro (Sonic Screamer · Solar Charger · Right LED Blinks · Glass Dome · Salt Water)
- Clue 1 (Rounding): "THE BAD ROBOT LACKS THE PLASMA SHIELD"Round 529 to the nearest hundred = 500 (T) · Round 73 to the nearest ten = 70 (C) · Round 90 to the nearest ten = 90 (P) · Round 4,052 to the nearest thousand = 4000 (S) · Round 54 to the nearest ten = 50 (L) · Round 9,104 to the nearest thousand = 9000 (I) · Round 7,254 to the nearest thousand = 7000 (A) · Round 779 to the nearest hundred = 800 (K) · Round 177 to the nearest hundred = 200 (D) · Round 896 to the nearest hundred = 900 (R) · Round 6,413 to the nearest thousand = 6000 (M) · Round 2,694 to the nearest thousand = 3000 (B) · Round 26 to the nearest ten = 30 (H) · Round 7,697 to the nearest thousand = 8000 (E) · Round 637 to the nearest hundred = 600 (O)
- Clue 2 (Addition): "THE CULPRIT FLASHES THEIR RIGHT LIGHT"441 + 466 = 907 (T) · 351 + 203 = 554 (E) · 471 + 379 = 850 (L) · 394 + 552 = 946 (S) · 415 + 441 = 856 (C) · 194 + 436 = 630 (G) · 560 + 406 = 966 (F) · 109 + 140 = 249 (I) · 365 + 261 = 626 (A) · 303 + 178 = 481 (U) · 199 + 364 = 563 (P) · 420 + 212 = 632 (R) · 293 + 535 = 828 (H)
- Clue 3 (Subtraction): "SPLASHING SALT WATER SHUTS THEM DOWN"642 - 352 = 290 (S) · 902 - 182 = 720 (T) · 619 - 392 = 227 (N) · 406 - 76 = 330 (L) · 297 - 133 = 164 (U) · 670 - 93 = 577 (A) · 537 - 81 = 456 (I) · 896 - 237 = 659 (M) · 810 - 32 = 778 (H) · 698 - 142 = 556 (G) · 320 - 151 = 169 (E) · 613 - 88 = 525 (O) · 371 - 247 = 124 (D) · 498 - 201 = 297 (W) · 588 - 182 = 406 (R) · 810 - 174 = 636 (P)
- Clue 4 (Multiplication facts (1-12)): "A PIECE OF GLASS DOME WAS FOUND HERE"12 × 4 = 48 (A) · 12 × 6 = 72 (W) · 7 × 11 = 77 (P) · 5 × 10 = 50 (U) · 4 × 1 = 4 (M) · 1 × 5 = 5 (I) · 8 × 10 = 80 (C) · 2 × 6 = 12 (N) · 10 × 9 = 90 (L) · 11 × 11 = 121 (O) · 1 × 7 = 7 (S) · 9 × 5 = 45 (E) · 7 × 2 = 14 (R) · 5 × 12 = 60 (F) · 4 × 11 = 44 (G) · 10 × 10 = 100 (H) · 10 × 7 = 70 (D)
- Clue 5 (Division facts (1-12)): surviving statement (box 7) → Micro9 ÷ 1 = 9 · 12 ÷ 1 = 12 · 9 ÷ 3 = 3 · 18 ÷ 3 = 6 · 64 ÷ 8 = 8 · 16 ÷ 8 = 2 · 7 ÷ 7 = 1 · 132 ÷ 12 = 11 · 4 ÷ 1 = 4 · 10 ÷ 1 = 10 · 5 ÷ 1 = 5
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Great Robo-Factory Heist — set in Gearville Robo-Factory
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects