🤖 RobotsGrade 3Reading: grades 3-4AdditionRoundingSubtractionMultiplicationDivision
The Runaway Bot
A sneaky rogue bot has locked the Head Engineer out of the main server room! We must look at the scrap metal and oil leaks to find out which robot did it before they rewrite all our code.
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 Tool | Charging Port | Wire Color | System Bug |
|---|---|---|---|---|---|
| Data | Sonic Horn | Drill Nose | Left-Side Port | Blue Cables | Water Mist |
| Widget | Sonic Horn | Radar Dish | Left-Side Port | Blue Cables | Strong Magnets |
| Rusty | Magnet Hands | Tire Feet | Right-Side Port | Green Cables | Strong Magnets |
| Axel | Sonic Horn | Radar Dish | Right-Side Port | Green Cables | Strong Magnets |
| Gizmo | Laser Eyes | Tire Feet | Left-Side Port | Red Cables | Strong Magnets |
| Rivet | Magnet Hands | Drill Nose | Right-Side Port | Blue Cables | Strong Magnets |
| Clank | Sonic Horn | Tire Feet | Right-Side Port | Blue Cables | Strong Magnets |
| Turbo | Rocket Boots | Solar Wings | Left-Side Port | Green Cables | Water Mist |
| Geary | Spring Legs | Drill Nose | Right-Side Port | Green Cables | Rust Spray |
| Bolt | Spring Legs | Solar Wings | Left-Side Port | Red Cables | Water Mist |
| Cyber | Spring Legs | Spark Plug | Left-Side Port | Green Cables | Strong Magnets |
| Chip | Magnet Hands | Solar Wings | Left-Side Port | Green Cables | Strong Magnets |
| Sparky | Magnet Hands | Spark Plug | Right-Side Port | Green Cables | Rust Spray |
| Radar | Sonic Horn | Spark Plug | Right-Side Port | Red Cables | Strong Magnets |
| Glitch | Sonic Horn | Solar Wings | Right-Side Port | Blue Cables | Strong Magnets |
| Vector | Sonic Horn | Spark Plug | Right-Side Port | Green Cables | Strong Magnets |
| Byte | Spring Legs | Drill Nose | Right-Side Port | Green Cables | Strong Magnets |
| Circuit | Rocket Boots | Drill Nose | Right-Side Port | Green Cables | Strong Magnets |
| Pixel | Sonic Horn | Radar Dish | Left-Side Port | Green Cables | Water Mist |
| Rotor | Magnet Hands | Tire Feet | Right-Side Port | Green Cables | Water Mist |
| Socket | Magnet Hands | Solar Wings | Left-Side Port | Red Cables | Water Mist |
Clue 1
Addition
We need to tally up all the metal scraps left on the floor. Let's add the copper plates and the steel bolts to find our 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.
T
837
723
600
211
647
659
659
980
647
850
519
646
600
679
850
646
T
837
742
679
600
980
679
366
980
755
241
366
659
742
575
579 + 258 =T
346 + 409 =R
203 + 456 =L
220 + 299 =D
351 + 295 =O
239 + 503 =U
359 + 320 =S
143 + 68 =V
231 + 344 =G
426 + 297 =H
133 + 108 =K
365 + 485 =N
314 + 286 =E
670 + 310 =A
238 + 409 =I
175 + 191 =P
0/16 letters found
Clue 2
Rounding
The computer monitor is blinking with a blurry power level! Round this three-digit number to the nearest ten to clear up the screen.
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
6000
8000
30
600
8000
5000
20
2000
30
20
300
5000
200
40
70
4000
2000
2000
30
7000
900
400
T
6000
8000
30
20
60
2000
8000
T
6000
200
60
7000
30
Round 6,414 to the nearest thousandT
Round 380 to the nearest hundredN
Round 341 to the nearest hundredW
Round 4,687 to the nearest thousandA
Round 74 to the nearest tenL
Round 6,895 to the nearest thousandD
Round 58 to the nearest tenI
Round 24 to the nearest tenR
Round 1,854 to the nearest thousandG
Round 579 to the nearest hundredC
Round 857 to the nearest hundredO
Round 196 to the nearest hundredS
Round 7,972 to the nearest thousandH
Round 33 to the nearest tenE
Round 4,031 to the nearest thousandU
Round 38 to the nearest tenP
0/16 letters found
Clue 3
Subtraction
A leaky pipe is dripping oil. We had a full gallon, but some spilled out. Subtract the spilled oil to see how much we have left.
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
522
502
197
715
331
673
671
815
673
331
683
502
S
522
502
197
815
633
633
683
162
502
410
683
671
683
502
815
154
197
238
331
815
765
815
429
574 - 52 =S
1152 - 387 =W
518 - 321 =R
687 - 16 =M
787 - 154 =P
322 - 168 =L
1005 - 290 =O
423 - 261 =D
263 - 25 =U
1120 - 305 =A
637 - 208 =Y
638 - 136 =T
1035 - 352 =E
550 - 219 =N
479 - 69 =H
738 - 65 =G
0/16 letters found
Clue 4
Multiplication facts (1-12)
The battery packs are stacked neatly in rows on the shelf. Multiply the rows by the packs in each row to see how much energy we can use.
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
22
33
120
120
20
72
100
33
120
100
20
42
96
63
4
45
100
81
20
72
4
42
63
120
80
45
49
120
16
100
20
132
2 × 11 =G
11 × 12 =D
9 × 7 =L
10 × 10 =I
9 × 9 =O
3 × 11 =R
7 × 7 =B
8 × 9 =W
8 × 12 =U
9 × 5 =T
8 × 10 =F
7 × 6 =S
8 × 2 =H
2 × 2 =A
2 × 10 =N
12 × 10 =E
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
We found a box of spare gears. Share the gears equally among our friendly repair bots to get the final clue decoded.
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
22 ÷ 2 = ?
81 ÷ 9 = ?
108 ÷ 9 = ?
90 ÷ 9 = ?
10 ÷ 10 = ?
44 ÷ 11 = ?
64 ÷ 8 = ?
35 ÷ 5 = ?
9 ÷ 3 = ?
50 ÷ 10 = ?
8 ÷ 4 = ?
Step 2 — cross out the sentence with each answer
1.The villain blasted into the air on fiery thrusters, then rolled down the hallway on rubber wheels.
2.The villain shattered the glass with a loud screech, then lit up the dark room with glowing sparks.
3.The villain shined a bright laser beam at the camera, then rolled down the hallway on rubber wheels.
4.The villain blasted into the air on fiery thrusters, then tracked the guards using a spinny radar.
5.The villain bounced right over the high security wall, then rolled down the hallway on rubber wheels.
6.The villain grabbed the keycard with a magnetic pull, then rolled down the hallway on rubber wheels.
7.The villain bounced right over the high security wall, then glided away using shiny solar panels.
8.The villain bounced right over the high security wall, then lit up the dark room with glowing sparks.
9.The villain blasted into the air on fiery thrusters, then bored a hole through the door with steel drills.
10.The villain shined a bright laser beam at the camera, then glided away using shiny solar panels.
11.The villain bounced right over the high security wall, then bored a hole through the door with steel drills.
12.The villain shattered the glass with a loud screech, then tracked the guards using a spinny radar.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Runaway Bot
Culprit: Rusty (Magnet Hands · Tire Feet · Right-Side Port · Green Cables · Strong Magnets)
- Clue 1 (Addition): "THE VILLAIN DOES NOT USE A SPARK PLUG"579 + 258 = 837 (T) · 346 + 409 = 755 (R) · 203 + 456 = 659 (L) · 220 + 299 = 519 (D) · 351 + 295 = 646 (O) · 239 + 503 = 742 (U) · 359 + 320 = 679 (S) · 143 + 68 = 211 (V) · 231 + 344 = 575 (G) · 426 + 297 = 723 (H) · 133 + 108 = 241 (K) · 365 + 485 = 850 (N) · 314 + 286 = 600 (E) · 670 + 310 = 980 (A) · 238 + 409 = 647 (I) · 175 + 191 = 366 (P)
- Clue 2 (Rounding): "THE CHARGER WAS PLUGGED ON THE RIGHT SIDE"Round 6,414 to the nearest thousand = 6000 (T) · Round 380 to the nearest hundred = 400 (N) · Round 341 to the nearest hundred = 300 (W) · Round 4,687 to the nearest thousand = 5000 (A) · Round 74 to the nearest ten = 70 (L) · Round 6,895 to the nearest thousand = 7000 (D) · Round 58 to the nearest ten = 60 (I) · Round 24 to the nearest ten = 20 (R) · Round 1,854 to the nearest thousand = 2000 (G) · Round 579 to the nearest hundred = 600 (C) · Round 857 to the nearest hundred = 900 (O) · Round 196 to the nearest hundred = 200 (S) · Round 7,972 to the nearest thousand = 8000 (H) · Round 33 to the nearest ten = 30 (E) · Round 4,031 to the nearest thousand = 4000 (U) · Round 38 to the nearest ten = 40 (P)
- Clue 3 (Subtraction): "STRONG MAGNETS TRAPPED THE METAL RUNAWAY"574 - 52 = 522 (S) · 1152 - 387 = 765 (W) · 518 - 321 = 197 (R) · 687 - 16 = 671 (M) · 787 - 154 = 633 (P) · 322 - 168 = 154 (L) · 1005 - 290 = 715 (O) · 423 - 261 = 162 (D) · 263 - 25 = 238 (U) · 1120 - 305 = 815 (A) · 637 - 208 = 429 (Y) · 638 - 136 = 502 (T) · 1035 - 352 = 683 (E) · 550 - 219 = 331 (N) · 479 - 69 = 410 (H) · 738 - 65 = 673 (G)
- Clue 4 (Multiplication facts (1-12)): "GREEN WIRE INSULATION WAS LEFT BEHIND"2 × 11 = 22 (G) · 11 × 12 = 132 (D) · 9 × 7 = 63 (L) · 10 × 10 = 100 (I) · 9 × 9 = 81 (O) · 3 × 11 = 33 (R) · 7 × 7 = 49 (B) · 8 × 9 = 72 (W) · 8 × 12 = 96 (U) · 9 × 5 = 45 (T) · 8 × 10 = 80 (F) · 7 × 6 = 42 (S) · 8 × 2 = 16 (H) · 2 × 2 = 4 (A) · 2 × 10 = 20 (N) · 12 × 10 = 120 (E)
- Clue 5 (Division facts (1-12)): surviving statement (box 6) → Rusty22 ÷ 2 = 11 · 81 ÷ 9 = 9 · 108 ÷ 9 = 12 · 90 ÷ 9 = 10 · 10 ÷ 10 = 1 · 44 ÷ 11 = 4 · 64 ÷ 8 = 8 · 35 ÷ 5 = 7 · 9 ÷ 3 = 3 · 50 ÷ 10 = 5 · 8 ÷ 4 = 2
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Addition, Rounding, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Runaway Bot — set in The Robo-Research Lab
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects