🤖 RobotsGrade 3Reading: grades 3-4MultiplicationRoundingAdditionSubtractionDivision
The Great Power Core Glitch
A rogue robot has shut down the main energy core of Robo-City! The Head Operator needs your help to decode the signals and find the bot before the whole city runs out of battery power.
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 | Secret Chip | Oil Leak Side | Head Accessory | System Vulnerability |
|---|---|---|---|---|---|
| Robbie | Magnetic Clamp | Grappling Hook | Left Grip Leak | Chrome Dome | Strong Magnet |
| Megatron | Laser Welder | Grappling Hook | Right Grip Leak | Chrome Dome | Water Splash |
| Binary | Laser Welder | Ice Beam | Right Grip Leak | Copper Antenna | Strong Magnet |
| Rodney | Magnetic Clamp | Solar Panel | Left Grip Leak | Copper Antenna | Rust Spray |
| Wall-E | Magnetic Clamp | Sonar Radar | Left Grip Leak | Chrome Dome | Rust Spray |
| Circuit | Plasma Cutter | Sonar Radar | Left Grip Leak | Copper Antenna | Rust Spray |
| Pixel | Plasma Cutter | Sonar Radar | Left Grip Leak | Copper Antenna | Water Splash |
| Gizmo | Plasma Cutter | Grappling Hook | Right Grip Leak | Chrome Dome | Water Splash |
| Hal | Plasma Cutter | Ice Beam | Right Grip Leak | Copper Antenna | Rust Spray |
| Bender | Rocket Booster | Ice Beam | Right Grip Leak | Copper Antenna | Rust Spray |
| Sprocket | Plasma Cutter | Turbo Thruster | Left Grip Leak | Spiky Wires | Water Splash |
| Rosie | Laser Welder | Sonar Radar | Left Grip Leak | Copper Antenna | Strong Magnet |
| Data | Magnetic Clamp | Turbo Thruster | Left Grip Leak | Copper Antenna | Strong Magnet |
| Arcee | Laser Welder | Ice Beam | Right Grip Leak | Spiky Wires | Rust Spray |
| Rusty | Magnetic Clamp | Turbo Thruster | Left Grip Leak | Copper Antenna | Rust Spray |
| Clank | Laser Welder | Turbo Thruster | Right Grip Leak | Spiky Wires | Water Splash |
| Astro | Magnetic Clamp | Sonar Radar | Right Grip Leak | Spiky Wires | Rust Spray |
| Micro | Sonic Drill | Turbo Thruster | Left Grip Leak | Copper Antenna | Rust Spray |
| Cyber | Sonic Drill | Grappling Hook | Left Grip Leak | Copper Antenna | Rust Spray |
| Gearbox | Sonic Drill | Solar Panel | Right Grip Leak | Copper Antenna | Water Splash |
| Widget | Rocket Booster | Turbo Thruster | Left Grip Leak | Spiky Wires | Water Splash |
Clue 1
Multiplication facts (1-12)
To start the search, we need to count the charging stations. The bays are lined up in perfect rows of chargers.
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
4
55
70
64
63
84
84
44
63
120
49
33
70
132
120
33
T
4
55
44
64
70
44
72
110
44
21
21
84
63
120
72
55
33
33
3
2 × 2 =T
10 × 12 =N
3 × 7 =P
12 × 11 =S
3 × 1 =K
12 × 7 =L
4 × 11 =A
5 × 11 =H
7 × 10 =E
11 × 3 =O
7 × 7 =D
8 × 8 =V
6 × 12 =G
7 × 9 =I
10 × 11 =R
0/15 letters found
Clue 2
Rounding
Our heat scanner is glitching! It only shows temperatures rounded to the nearest ten degrees.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
L
300
60
500
50
2000
8000
L
300
20
90
8000
80
4000
700
60
90
60
500
2000
3000
800
20
900
70
50
40
60
L
300
2000
200
400
Round 282 to the nearest hundredL
Round 710 to the nearest hundredW
Round 4,079 to the nearest thousandS
Round 351 to the nearest hundredK
Round 7,628 to the nearest thousandI
Round 16 to the nearest tenD
Round 48 to the nearest tenT
Round 513 to the nearest hundredF
Round 71 to the nearest tenY
Round 90 to the nearest tenR
Round 882 to the nearest hundredB
Round 82 to the nearest tenP
Round 39 to the nearest tenH
Round 2,831 to the nearest thousandU
Round 798 to the nearest hundredN
Round 2,410 to the nearest thousandO
Round 63 to the nearest tenE
Round 160 to the nearest hundredC
0/18 letters found
Clue 3
Addition
We need to pack spare batteries. Let us add up the heavy power cells left in both storage bins.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
R
789
686
447
409
447
860
R
789
857
358
447
649
240
806
753
255
409
603
753
906
726
649
649
857
726
224
255
240
806
224
553 + 236 =R
80 + 175 =D
155 + 203 =Y
112 + 112 =N
410 + 343 =E
178 + 231 =T
473 + 253 =I
81 + 159 =O
341 + 345 =U
384 + 219 =H
196 + 453 =L
517 + 343 =P
387 + 470 =A
505 + 401 =V
144 + 303 =S
319 + 487 =W
0/16 letters found
Clue 4
Subtraction
A small power drain took some energy from our blasters. Subtract the lost charge to see what remains.
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
285
177
339
569
642
778
769
138
819
589
397
778
581
825
569
804
804
177
203
138
778
468
177
778
778
138
468
397
804
621 - 336 =W
881 - 112 =D
807 - 226 =Y
766 - 298 =T
567 - 364 =R
1148 - 329 =S
706 - 64 =U
1039 - 261 =N
194 - 56 =A
322 - 145 =E
951 - 126 =C
687 - 98 =H
746 - 349 =I
891 - 322 =O
904 - 100 =P
525 - 186 =F
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
We must share our tracker chips equally among the search teams so everyone has the exact same amount.
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
36 ÷ 6 = ?
18 ÷ 6 = ?
18 ÷ 9 = ?
144 ÷ 12 = ?
9 ÷ 9 = ?
77 ÷ 7 = ?
20 ÷ 5 = ?
63 ÷ 7 = ?
40 ÷ 5 = ?
20 ÷ 2 = ?
42 ÷ 6 = ?
Step 2 — cross out the sentence with each answer
1.The villain flew past the high security cameras, then charged up on a solar pad.
2.The villain sliced open the backup generator, then scanned for guard bots.
3.The villain stole the giant golden battery, then speeded down the highway.
4.The villain drilled through the vault wall, then swung away on a wire rope.
5.The villain stole the giant golden battery, then charged up on a solar pad.
6.The villain drilled through the vault wall, then speeded down the highway.
7.The villain drilled through the vault wall, then charged up on a solar pad.
8.The villain sliced open the backup generator, then charged up on a solar pad.
9.The villain melted the central power core, then charged up on a solar pad.
10.The villain flew past the high security cameras, then froze the cooling pipes.
11.The villain stole the giant golden battery, then swung away on a wire rope.
12.The villain melted the central power core, then scanned for guard bots.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Power Core Glitch
Culprit: Rodney (Magnetic Clamp · Solar Panel · Left Grip Leak · Copper Antenna · Rust Spray)
- Clue 1 (Multiplication facts (1-12)): "THE VILLAIN DOES NOT HAVE A GRAPPLING HOOK"2 × 2 = 4 (T) · 10 × 12 = 120 (N) · 3 × 7 = 21 (P) · 12 × 11 = 132 (S) · 3 × 1 = 3 (K) · 12 × 7 = 84 (L) · 4 × 11 = 44 (A) · 5 × 11 = 55 (H) · 7 × 10 = 70 (E) · 11 × 3 = 33 (O) · 7 × 7 = 49 (D) · 8 × 8 = 64 (V) · 6 × 12 = 72 (G) · 7 × 9 = 63 (I) · 10 × 11 = 110 (R)
- Clue 2 (Rounding): "LEFT OIL DRIPS WERE FOUND BY THE LOCK"Round 282 to the nearest hundred = 300 (L) · Round 710 to the nearest hundred = 700 (W) · Round 4,079 to the nearest thousand = 4000 (S) · Round 351 to the nearest hundred = 400 (K) · Round 7,628 to the nearest thousand = 8000 (I) · Round 16 to the nearest ten = 20 (D) · Round 48 to the nearest ten = 50 (T) · Round 513 to the nearest hundred = 500 (F) · Round 71 to the nearest ten = 70 (Y) · Round 90 to the nearest ten = 90 (R) · Round 882 to the nearest hundred = 900 (B) · Round 82 to the nearest ten = 80 (P) · Round 39 to the nearest ten = 40 (H) · Round 2,831 to the nearest thousand = 3000 (U) · Round 798 to the nearest hundred = 800 (N) · Round 2,410 to the nearest thousand = 2000 (O) · Round 63 to the nearest ten = 60 (E) · Round 160 to the nearest hundred = 200 (C)
- Clue 3 (Addition): "RUST SPRAY SLOWED THE VILLAIN DOWN"553 + 236 = 789 (R) · 80 + 175 = 255 (D) · 155 + 203 = 358 (Y) · 112 + 112 = 224 (N) · 410 + 343 = 753 (E) · 178 + 231 = 409 (T) · 473 + 253 = 726 (I) · 81 + 159 = 240 (O) · 341 + 345 = 686 (U) · 384 + 219 = 603 (H) · 196 + 453 = 649 (L) · 517 + 343 = 860 (P) · 387 + 470 = 857 (A) · 505 + 401 = 906 (V) · 144 + 303 = 447 (S) · 319 + 487 = 806 (W)
- Clue 4 (Subtraction): "WE FOUND A SHINY COPPER ANTENNA TIP"621 - 336 = 285 (W) · 881 - 112 = 769 (D) · 807 - 226 = 581 (Y) · 766 - 298 = 468 (T) · 567 - 364 = 203 (R) · 1148 - 329 = 819 (S) · 706 - 64 = 642 (U) · 1039 - 261 = 778 (N) · 194 - 56 = 138 (A) · 322 - 145 = 177 (E) · 951 - 126 = 825 (C) · 687 - 98 = 589 (H) · 746 - 349 = 397 (I) · 891 - 322 = 569 (O) · 904 - 100 = 804 (P) · 525 - 186 = 339 (F)
- Clue 5 (Division facts (1-12)): surviving statement (box 5) → Rodney36 ÷ 6 = 6 · 18 ÷ 6 = 3 · 18 ÷ 9 = 2 · 144 ÷ 12 = 12 · 9 ÷ 9 = 1 · 77 ÷ 7 = 11 · 20 ÷ 5 = 4 · 63 ÷ 7 = 9 · 40 ÷ 5 = 8 · 20 ÷ 2 = 10 · 42 ÷ 6 = 7
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Multiplication, Rounding, Addition, Subtraction, Division
- Reading level
- grades 3-4
- Theme
- The Great Power Core Glitch — set in The Robo-City Power Grid
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects