Math Mysteries
🤖 Cats, RobotsGrade 7Reading: grades 3-4Place valueMulti-step word problemsAdditionSubtractionDivision

The Great Robo-Cat Heist

Oh no! A sneaky rogue Robo-Cat has broken into the Meow-Tech Robotics Lab and snatched the Golden Tuna Microchip! The Chief Inventor needs your help. We must trace the clues and use our math-decoding sensors to find out which of the city's metal felines is the culprit!

Suspects

Possible suspects

Cross off a row as each clue rules it out. On screen, tap a row.

21 of 21 still in play
Nameprimary programspecial gadgetlaser light colormetal fur coatglitch trigger
Widget whiskersRocket Paws JettingMagnetic Tail GripGreen Eye LEDSilver Chrome PlateWater Sprinklers
Circuit FelixHologram Mouse ProjectionSolar Panel EarsBlue Eye LEDRusty Copper MeshWater Sprinklers
Zinc ZiggySuper Sonic MeowHover Booster BootsGreen Eye LEDRusty Copper MeshWater Sprinklers
Pixel PawHologram Mouse ProjectionNight Vision ScannersBlue Eye LEDSilver Chrome PlateSqueaky Toy Sound
Byte BobHologram Mouse ProjectionSolar Panel EarsBlue Eye LEDGold Brass WireStrong Magnet Waves
Micro MiloHologram Mouse ProjectionMetal Claw DrillBlue Eye LEDGold Brass WireWater Sprinklers
Vector VixenYarn Ball LauncherMetal Claw DrillBlue Eye LEDRusty Copper MeshWater Sprinklers
Bolt BootsSuper Sonic MeowNight Vision ScannersGreen Eye LEDRusty Copper MeshWater Sprinklers
Sprocket PurrLaser Pointer BeamHover Booster BootsBlue Eye LEDRusty Copper MeshWater Sprinklers
Gizmo GarfieldSuper Sonic MeowMagnetic Tail GripBlue Eye LEDGold Brass WireSqueaky Toy Sound
Pliers PixieSuper Sonic MeowMetal Claw DrillBlue Eye LEDRusty Copper MeshSqueaky Toy Sound
Sparky SimbaSuper Sonic MeowMetal Claw DrillBlue Eye LEDSilver Chrome PlateSqueaky Toy Sound
Rusty ClawHologram Mouse ProjectionHover Booster BootsGreen Eye LEDGold Brass WireSqueaky Toy Sound
Silicon SylvesterSuper Sonic MeowHover Booster BootsBlue Eye LEDRusty Copper MeshSqueaky Toy Sound
Copper CleoSuper Sonic MeowNight Vision ScannersBlue Eye LEDSilver Chrome PlateStrong Magnet Waves
Meow-tronYarn Ball LauncherMagnetic Tail GripBlue Eye LEDRusty Copper MeshWater Sprinklers
Alloy OliverSuper Sonic MeowMagnetic Tail GripGreen Eye LEDSilver Chrome PlateStrong Magnet Waves
Turbo TomLaser Pointer BeamMagnetic Tail GripBlue Eye LEDSilver Chrome PlateStrong Magnet Waves
Giga GeorgeLaser Pointer BeamMetal Claw DrillGreen Eye LEDSilver Chrome PlateWater Sprinklers
Radar RomeoYarn Ball LauncherSolar Panel EarsGreen Eye LEDRusty Copper MeshWater Sprinklers
Cyber MittensRocket Paws JettingMetal Claw DrillBlue Eye LEDRusty Copper MeshWater Sprinklers
Clue 1

Place value

We found a locked computer terminal. The passcode screen shows a huge number, but the security chip only reads the digit in the thousands place.

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
500
800
T
40
500
200
800
600
4000
700
800
20
90
700
T
40
8000
20
800
500
700
900
800
60
400
700
700
20
T
40
800
60
400
700
700
T
40
20
What is the value of the 4 in 39,542?T
What is the value of the 9 in 67,297?N
What is the value of the 8 in 46,825?E
What is the value of the 5 in 667,522?H
What is the value of the 2 in 365,250?I
What is the value of the 2 in 135,126?S
What is the value of the 7 in 16,745?O
What is the value of the 4 in 96,426?B
What is the value of the 8 in 28,521?U
What is the value of the 9 in 412,954?V
What is the value of the 4 in 834,005?D
What is the value of the 6 in 497,262?R
What is the value of the 6 in 53,600?F
0/13 letters found
Clue 2

Multi-step word problems

We checked the inventory logs. To find out how many spare screws are missing, we must combine the heavy boxes and subtract the empty ones.

Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.

Awitnesssawthevillainwas
B
35
40
55
38
38
68
38
40
38
67
.
Robo-Kitten earned 6 shiny cog in each of 3 rounds, plus 27 bonus shiny cog. Then 10 shiny cog were lost. How many shiny cog are left?B
Robo-Kitten collected 19 copper wire in the morning and 146 copper wire in the afternoon, then split them equally among 3 The Alley-Bot Patrol. How many copper wire did each get?U
Robo-Kitten collected 190 battery pack in the morning and 38 battery pack in the afternoon, then split them equally among 6 The Alley-Bot Patrol. How many battery pack did each get?E
Robo-Kitten collected 106 copper wire in the morning and 234 copper wire in the afternoon, then split them equally among 5 The Alley-Bot Patrol. How many copper wire did each get?Y
There were 222 battery pack in all. 2 The Alley-Bot Patrol used 31 battery pack each. The other 4 The Alley-Bot Patrol shared the rest equally. How many battery pack did each of the other The Alley-Bot Patrol get?L
There were 222 shiny cog in all. 1 The Alley-Bot Patrol used 21 shiny cog each. The other 3 The Alley-Bot Patrol shared the rest equally. How many shiny cog did each of the other The Alley-Bot Patrol get?D
0/6 letters found
Clue 3

Addition

A broken power dock was bypassed. We need to add up the charges of all the connected battery packs to see the total output.

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
3570
8312
3386
6845
8329
4142
4759
8329
9624
8106
2407
9080
6845
8329
4142
W
3570
9624
9080
9080
4142
8248
2389
8329
3386
2389
3113
3386
3386
8248
9624
4142
6858
8312
3386
1157 + 2413 =W
2627 + 1515 =S
4303 + 4777 =L
4699 + 3549 =H
2537 + 2222 =P
4168 + 5456 =I
5136 + 3176 =A
968 + 2145 =U
2201 + 1185 =T
957 + 1432 =O
3968 + 2877 =E
4608 + 3498 =N
5327 + 3002 =R
1153 + 1254 =K
3560 + 3298 =C
0/15 letters found
Clue 4

Subtraction

The villain drained energy from the main generator. Let us subtract the leftover power from the starting amount to find the usage.

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
6527
2450
3039
3667
5695
5091
8286
6253
6253
6384
R
6527
2078
6384
3039
6217
4490
8109
3039
3039
3667
2450
5091
8279
3667
8286
3667
6217
6384
4490
8109
7734
7734
9494 - 2967 =R
6739 - 4661 =M
5439 - 2989 =U
6351 - 134 =H
11361 - 3252 =A
7185 - 801 =E
5013 - 1346 =T
10434 - 2148 =O
5421 - 2382 =S
7596 - 1343 =P
5232 - 141 =C
11740 - 4006 =L
10530 - 2251 =K
5810 - 1320 =W
6978 - 1283 =Y
0/15 letters found
Clue 5

Division facts (1-12) — the last clue

A box of backup microchips was knocked over. We must share the chips equally among the empty robot chassis to see how many each gets.

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
6 ÷ 6 = ?
18 ÷ 2 = ?
16 ÷ 2 = ?
48 ÷ 12 = ?
15 ÷ 3 = ?
84 ÷ 7 = ?
36 ÷ 12 = ?
6 ÷ 1 = ?
35 ÷ 5 = ?
4 ÷ 2 = ?
50 ÷ 5 = ?
Step 2 — cross out the sentence with each answer
1.The villain fires a massive yarn projectile, then climbs the steel pipe.
2.The villain screeches a sonic soundwave, then floats over the laser grid.
3.The villain projects bright holograms, then scans the dark room.
4.The villain fires a massive yarn projectile, then floats over the laser grid.
5.The villain screeches a sonic soundwave, then scans the dark room.
6.The villain fires a massive yarn projectile, then scans the dark room.
7.The villain screeches a sonic soundwave, then climbs the steel pipe.
8.The villain ignites rocket boosters, then drills through the wall.
9.The villain projects bright holograms, then charges up in the sun.
10.The villain projects bright holograms, then climbs the steel pipe.
11.The villain fires a massive yarn projectile, then drills through the wall.
12.The villain blasts a high-energy laser, then drills through the wall.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 7 math
Math topics
Place value, Multi-step word problems, Addition, Subtraction, Division
Reading level
grades 3-4
Theme
The Great Robo-Cat Heist — set in The Meow-Tech Robotics Lab
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

More free printable math mysteries

7th grade worksheetsAddition worksheetsSubtraction worksheetsDivision worksheetsPlace value worksheets🐾 Animals worksheetsAll worksheets →
The Lost Sunstone of Whispering Canyons
Grade 7
The Lost Compass of Whispering Winds
Grade 7
The Airship Academy Mystery
Grade 7
The Lost Compass of the Sky-Isles
Grade 7