Math Mysteries
🐱 CatsGrade 10Reading: grades 7-9Pythagorean theoremMulti-step word problemsSquare rootsExponents

The Case of the Golden Catnip Mouse

The legendary Golden Catnip Mouse has been swiped from the Whisker City Vault! A mysterious feline thief slipped past the laser grids. Officer Whiskers needs your help to crack the clues, solve the math, and identify the culprit from the lineup.

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 SkillSpecial UtilityDistinguishing FeatureFur PatternKnown Detractor
Tom CatHigh LeapYarn SpinNo collar bellCalico furCrinkly foil
OliverHigh LeapCatnip BrewNo collar bellSleek black coatWater mist
FluffySuper PurrBox HideWears collar bellTabby stripesWater mist
SockyHigh LeapMouse HuntNo collar bellTabby stripesWater mist
MittensHigh LeapBox HideNo collar bellTabby stripesWater mist
BootsNight VisionCatnip BrewNo collar bellTabby stripesVacuum noise
SylvesterHigh LeapMouse HuntNo collar bellCalico furCrinkly foil
GarfieldSuper PurrBox HideNo collar bellSleek black coatVacuum noise
Grumpy CatSuper PurrCatnip BrewWears collar bellSleek black coatVacuum noise
SalemSuper PurrYarn SpinNo collar bellCalico furCrinkly foil
Mr BigglesworthNight VisionBox HideWears collar bellSleek black coatVacuum noise
MarieNight VisionCatnip BrewNo collar bellCalico furWater mist
PawsSuper PurrCatnip BrewNo collar bellTabby stripesWater mist
Lil BubHigh LeapMouse HuntWears collar bellCalico furCrinkly foil
NalaSuper PurrMouse HuntWears collar bellSleek black coatWater mist
CheshireHigh LeapYarn SpinNo collar bellTabby stripesVacuum noise
Bob the CatSuper PurrYarn SpinWears collar bellSleek black coatWater mist
MaruSilent PawsYarn SpinWears collar bellTabby stripesWater mist
SassySuper PurrMouse HuntNo collar bellCalico furWater mist
ChoupetteNight VisionLaser DodgeNo collar bellTabby stripesWater mist
WhiskersSuper PurrMouse HuntNo collar bellTabby stripesWater mist
Clue 1

Pythagorean theorem

We tracked the thief's escape route across several roofs. The security team had to calculate the total energy spent over three distinct climbs and two descents to find where they rested.

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
51
15
25
30
17
5
5
52
17
82
100
20
25
34
82
20
T
51
10
75
25
40
58
52
T
51
82
17
41
legs 24 and 45, hypotenuse =T
legs 20 and 48, hypotenuse =A
legs 24 and 32, hypotenuse =W
legs 8 and 15, hypotenuse =I
legs 40 and 42, hypotenuse =C
legs 28 and 96, hypotenuse =D
legs 15 and 20, hypotenuse =E
legs 16 and 30, hypotenuse =S
legs 21 and 72, hypotenuse =R
legs 18 and 80, hypotenuse =N
legs 9 and 12, hypotenuse =H
legs 6 and 8, hypotenuse =B
legs 18 and 24, hypotenuse =V
legs 3 and 4, hypotenuse =L
legs 9 and 40, hypotenuse =P
legs 12 and 16, hypotenuse =O
0/16 letters found
Clue 2

Multi-step word problems

The suspect made a daring diagonal leap from the museum ledge directly to a high lamppost. We must calculate the straight-line distance of this jump using the wall height and ground distance.

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

Awitnesssawthevillainwas
N
11
12
85
12
47
47
40
86
10
E
 
47
47
.
There were 84 scratching posts in all. 40 scratching posts were set aside. The rest were shared equally among 4 Feline Patrol Unit. How many scratching posts did each get?N
There were 72 catnip treats in all. 24 catnip treats were set aside. The rest were shared equally among 4 Feline Patrol Unit. How many catnip treats did each get?O
There were 460 yarn balls in all. 2 Feline Patrol Unit used 15 yarn balls each. The other 5 Feline Patrol Unit shared the rest equally. How many yarn balls did each of the other Feline Patrol Unit get?R
There were 208 catnip treats in all. 8 catnip treats were set aside. The rest were shared equally among 5 Feline Patrol Unit. How many catnip treats did each get?A
Officer Whiskers filled 7 boxes with 4 feather wands each, then found 57 more feather wands. How many feather wands are there in all?C
There were 166 toy mice in all. 4 Feline Patrol Unit used 18 toy mice each. The other 2 Feline Patrol Unit shared the rest equally. How many toy mice did each of the other Feline Patrol Unit get?L
There were 67 toy mice in all. 3 Feline Patrol Unit used 9 toy mice each. The other 4 Feline Patrol Unit shared the rest equally. How many toy mice did each of the other Feline Patrol Unit get?B
0/7 letters found
Clue 3

Square roots

A mysterious square patch of spilled catnip was left on the lawn. To find the length of the suspect's stride, we need to determine the side length of this perfectly square botanical mess.

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
15
9
18
19
20
19
21
18
3
T
15
10
8
18
2
12
19
21
17
12
6
5
14
T
15
T
15
8
18
sqrt(225) =T
sqrt(324) =E
sqrt(64) =L
sqrt(81) =H
sqrt(4) =D
sqrt(100) =F
sqrt(196) =O
sqrt(441) =P
sqrt(289) =R
sqrt(144) =A
sqrt(25) =B
sqrt(36) =Y
sqrt(9) =C
sqrt(361) =S
sqrt(400) =U
0/15 letters found
Clue 4

Exponents

The bandit left a trail of toy mice that doubles at every block they ran. We can predict their final destination by calculating the total mice dropped using exponential powers of two.

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
441
625
484
169
81
25
256
36
324
484
49
100
S
441
36
729
324
512
256
729
512
625
361
25
125
25
256
9
25
21^2 =S
22^2 =R
9^2 =P
19^2 =H
5^3 =L
7^2 =W
3^2 =G
5^4 =T
4^4 =D
13^2 =I
6^2 =F
10^2 =A
5^2 =E
18^2 =U
3^6 =O
8^3 =N
0/16 letters found
Clue 5

Square roots — the last clue

The getaway vehicle was parked inside a fenced, square courtyard with a known area. Finding the perimeter will tell us how much tape we need to seal off the crime scene.

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
sqrt(9) = ?
sqrt(1) = ?
sqrt(144) = ?
sqrt(16) = ?
sqrt(25) = ?
sqrt(49) = ?
sqrt(81) = ?
sqrt(36) = ?
sqrt(4) = ?
sqrt(100) = ?
sqrt(121) = ?
Step 2 — cross out the sentence with each answer
1.The villain leaped from the highest rafter, then hid inside an empty cardboard box.
2.The villain used night vision to navigate the dark, then spilled aromatic catnip on the floor.
3.The villain purred loudly to disrupt the alarms, then chased a toy mouse to escape.
4.The villain scaled the steep brick wall, then hid inside an empty cardboard box.
5.The villain padded silently across the floor, then chased a toy mouse to escape.
6.The villain used night vision to navigate the dark, then hid inside an empty cardboard box.
7.The villain padded silently across the floor, then hid inside an empty cardboard box.
8.The villain used night vision to navigate the dark, then dodged the security lasers with ease.
9.The villain purred loudly to disrupt the alarms, then dodged the security lasers with ease.
10.The villain scaled the steep brick wall, then dodged the security lasers with ease.
11.The villain purred loudly to disrupt the alarms, then spilled aromatic catnip on the floor.
12.The villain leaped from the highest rafter, then chased a toy mouse to escape.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 10 math
Math topics
Pythagorean theorem, Multi-step word problems, Square roots, Exponents
Reading level
grades 7-9
Theme
The Case of the Golden Catnip Mouse — set in Whisker City
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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