🤖 RobotsGrade 3Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Great Robo-Rampage
Oh no! A rogue robot has broken out of the Spark City Lab and locked the Chief Inventor in the high-voltage supply closet! The robot is causing wild glitches all over the city. We need to track it down using our math sensors before it short-circuits the entire grid!
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 Laser | Backup Tool | LED Color | Antenna Style | System Vulnerability |
|---|---|---|---|---|---|
| Sparky | Heat Wave | Drill Arm | Glowing Blue LED | Radar Dish Antenna | Salty Water |
| Byte | Plasma Beam | Buzz Saw | Glowing Red LED | Radar Dish Antenna | Salty Water |
| Zinc | Plasma Beam | Buzz Saw | Glowing Blue LED | Radar Dish Antenna | Strong Magnets |
| Pixel | Freeze Ray | Drill Arm | Glowing Red LED | Radar Dish Antenna | Salty Water |
| Clank | Magnetic Pull | Grapple Hook | Glowing Red LED | Coiled Wire Antenna | Strong Magnets |
| Bop | Plasma Beam | Grapple Hook | Glowing Blue LED | Coiled Wire Antenna | Salty Water |
| Proton | Plasma Beam | Rocket Boots | Glowing Red LED | Coiled Wire Antenna | Strong Magnets |
| Beep | Magnetic Pull | Buzz Saw | Glowing Blue LED | Coiled Wire Antenna | Static Shock |
| Vector | Plasma Beam | Grapple Hook | Glowing Blue LED | Coiled Wire Antenna | Strong Magnets |
| Bolts | Heat Wave | Grapple Hook | Glowing Red LED | Coiled Wire Antenna | Strong Magnets |
| Chip | Sonic Blast | Scanner Eye | Glowing Red LED | Radar Dish Antenna | Strong Magnets |
| Radar | Freeze Ray | Rocket Boots | Glowing Blue LED | Radar Dish Antenna | Static Shock |
| Widget | Freeze Ray | Scanner Eye | Glowing Blue LED | Radar Dish Antenna | Salty Water |
| Rivet | Heat Wave | Scanner Eye | Glowing Blue LED | Radar Dish Antenna | Static Shock |
| Copper | Sonic Blast | Drill Arm | Glowing Red LED | Radar Dish Antenna | Strong Magnets |
| Dynamo | Magnetic Pull | Scanner Eye | Glowing Red LED | Coiled Wire Antenna | Strong Magnets |
| Sprocket | Sonic Blast | Scanner Eye | Glowing Blue LED | Coiled Wire Antenna | Static Shock |
| Gizmo | Freeze Ray | Rocket Boots | Glowing Red LED | Coiled Wire Antenna | Strong Magnets |
| Sonic | Plasma Beam | Grapple Hook | Glowing Red LED | Coiled Wire Antenna | Static Shock |
| Geary | Plasma Beam | Grapple Hook | Glowing Red LED | Spike Antenna | Static Shock |
| Turbo | Magnetic Pull | Drill Arm | Glowing Red LED | Radar Dish Antenna | Strong Magnets |
Clue 1
Rounding
The laboratory radar screen displays the rogue robot speed but the old monitor only shows numbers 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
5000
7000
3000
50
6000
900
900
2000
6000
4000
800
80
3000
70
4000
80
T
5000
7000
2000
50
3000
2000
70
40
2000
4000
4000
3000
300
3000
400
3000
Round 4,956 to the nearest thousandT
Round 7,430 to the nearest thousandH
Round 74 to the nearest tenS
Round 811 to the nearest hundredD
Round 2,715 to the nearest thousandE
Round 338 to the nearest hundredR
Round 39 to the nearest tenC
Round 5,733 to the nearest thousandI
Round 2,367 to the nearest thousandA
Round 426 to the nearest hundredY
Round 46 to the nearest tenV
Round 78 to the nearest tenO
Round 4,064 to the nearest thousandN
Round 893 to the nearest hundredL
0/14 letters found
Clue 2
Addition
To track the robot battery trail the junior mechanics are adding up all the spare power cells found in the hallway.
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
733
720
274
426
499
T
733
989
274
567
567
567
558
426
558
327
772
499
522
720
T
733
522
735
767
426
499
989
522
772
274
633
735
499
522
720
T
733
461 + 272 =T
394 + 239 =D
155 + 344 =I
247 + 179 =W
187 + 87 =E
113 + 214 =B
447 + 325 =R
335 + 187 =G
301 + 257 =A
314 + 253 =S
287 + 448 =L
501 + 219 =H
588 + 401 =N
365 + 402 =O
0/14 letters found
Clue 3
Subtraction
The escape pod lost fuel as it sped away. We need to subtract the spilled oil canisters from the starting supply to find the route.
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
209
157
282
583
530
421
755
457
421
583
282
457
583
T
209
394
114
417
625
547
755
625
417
282
T
209
583
T
209
114
583
T
209
114
564
224
T
209
606 - 397 =T
546 - 89 =D
918 - 354 =P
367 - 253 =O
546 - 152 =R
801 - 380 =U
736 - 111 =G
235 - 78 =H
722 - 139 =S
754 - 224 =Q
355 - 131 =I
392 - 110 =E
659 - 242 =N
981 - 226 =A
801 - 254 =M
0/15 letters found
Clue 4
Multiplication facts (1-12)
The repair shop floor has neat rows of microchips. We must multiply the rows by the columns to count the total parts left behind.
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
2
54
10
44
18
120
30
15
49
54
120
7
45
44
64
5
54
30
W
2
64
60
54
15
120
7
54
120
120
15
2 × 1 =W
7 × 1 =T
7 × 7 =B
12 × 5 =R
6 × 5 =D
12 × 10 =N
5 × 3 =A
5 × 2 =F
8 × 8 =I
5 × 1 =L
9 × 6 =E
4 × 11 =O
9 × 5 =C
3 × 6 =U
0/14 letters found
Clue 5
Division facts (1-12) — the last clue
To set up the final signal jammer the team must split the colorful copper wires equally among the green circuit boards.
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 = ?
6 ÷ 2 = ?
5 ÷ 1 = ?
56 ÷ 8 = ?
6 ÷ 6 = ?
44 ÷ 11 = ?
16 ÷ 8 = ?
81 ÷ 9 = ?
42 ÷ 7 = ?
96 ÷ 8 = ?
100 ÷ 10 = ?
Step 2 — cross out the sentence with each answer
1.The villain released a loud sonic blast, then searched the area with a scanner eye.
2.The villain released a loud sonic blast, then escaped using a grapple hook.
3.The villain blasted a freezing subzero ray, then zoomed away on rocket boots.
4.The villain activated a strong magnetic pull, then sliced through the fence with a buzz saw.
5.The villain fired a glowing plasma beam, then zoomed away on rocket boots.
6.The villain fired a glowing plasma beam, then escaped using a grapple hook.
7.The villain blasted a freezing subzero ray, then sliced through the fence with a buzz saw.
8.The villain activated a strong magnetic pull, then escaped using a grapple hook.
9.The villain released a loud sonic blast, then tunneled underground with a drill arm.
10.The villain activated a strong magnetic pull, then searched the area with a scanner eye.
11.The villain shot a scorching heat wave, then escaped using a grapple hook.
12.The villain fired a glowing plasma beam, then tunneled underground with a drill arm.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Robo-Rampage
Culprit: Clank (Magnetic Pull · Grapple Hook · Glowing Red LED · Coiled Wire Antenna · Strong Magnets)
- Clue 1 (Rounding): "THE VILLAIN DOES NOT HAVE A SCANNER EYE"Round 4,956 to the nearest thousand = 5000 (T) · Round 7,430 to the nearest thousand = 7000 (H) · Round 74 to the nearest ten = 70 (S) · Round 811 to the nearest hundred = 800 (D) · Round 2,715 to the nearest thousand = 3000 (E) · Round 338 to the nearest hundred = 300 (R) · Round 39 to the nearest ten = 40 (C) · Round 5,733 to the nearest thousand = 6000 (I) · Round 2,367 to the nearest thousand = 2000 (A) · Round 426 to the nearest hundred = 400 (Y) · Round 46 to the nearest ten = 50 (V) · Round 78 to the nearest ten = 80 (O) · Round 4,064 to the nearest thousand = 4000 (N) · Round 893 to the nearest hundred = 900 (L)
- Clue 2 (Addition): "THE WITNESS SAW A BRIGHT GLOWING RED LIGHT"461 + 272 = 733 (T) · 394 + 239 = 633 (D) · 155 + 344 = 499 (I) · 247 + 179 = 426 (W) · 187 + 87 = 274 (E) · 113 + 214 = 327 (B) · 447 + 325 = 772 (R) · 335 + 187 = 522 (G) · 301 + 257 = 558 (A) · 314 + 253 = 567 (S) · 287 + 448 = 735 (L) · 501 + 219 = 720 (H) · 588 + 401 = 989 (N) · 365 + 402 = 767 (O)
- Clue 3 (Subtraction): "THE SQUAD USED STRONG MAGNETS TO STOP IT"606 - 397 = 209 (T) · 546 - 89 = 457 (D) · 918 - 354 = 564 (P) · 367 - 253 = 114 (O) · 546 - 152 = 394 (R) · 801 - 380 = 421 (U) · 736 - 111 = 625 (G) · 235 - 78 = 157 (H) · 722 - 139 = 583 (S) · 754 - 224 = 530 (Q) · 355 - 131 = 224 (I) · 392 - 110 = 282 (E) · 659 - 242 = 417 (N) · 981 - 226 = 755 (A) · 801 - 254 = 547 (M)
- Clue 4 (Multiplication facts (1-12)): "WE FOUND A BENT COILED WIRE ANTENNA"2 × 1 = 2 (W) · 7 × 1 = 7 (T) · 7 × 7 = 49 (B) · 12 × 5 = 60 (R) · 6 × 5 = 30 (D) · 12 × 10 = 120 (N) · 5 × 3 = 15 (A) · 5 × 2 = 10 (F) · 8 × 8 = 64 (I) · 5 × 1 = 5 (L) · 9 × 6 = 54 (E) · 4 × 11 = 44 (O) · 9 × 5 = 45 (C) · 3 × 6 = 18 (U)
- Clue 5 (Division facts (1-12)): surviving statement (box 8) → Clank22 ÷ 2 = 11 · 6 ÷ 2 = 3 · 5 ÷ 1 = 5 · 56 ÷ 8 = 7 · 6 ÷ 6 = 1 · 44 ÷ 11 = 4 · 16 ÷ 8 = 2 · 81 ÷ 9 = 9 · 42 ÷ 7 = 6 · 96 ÷ 8 = 12 · 100 ÷ 10 = 10
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Great Robo-Rampage — set in The Spark City Circuit Board
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects