Math Mysteries
🐱 CatsGrade 4Reading: grades 3-4MultiplicationRoundingAdditionSubtractionDivision

The Great Catnip Caper

A sneaky cat burglar has swiped the Golden Catnip Mouse right out of its glass case! Chief Detective Whiskers needs your help to crack the codes and catch the culprit before they escape the city.

Suspects

Possible suspects

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

21 of 21 still in play
NameCat SkillPocket ToyFavorite PawFur PatternSecret Weakness
Felixsuper purrbox trapleft pawedcalico patchwater sprayer
Nalaquick clawbox trapleft pawedcalico patchwater sprayer
Milohigh jumpyarn throwright pawedorange stripebelly rub
Bootsquick clawyarn throwright pawedmidnight blackwater sprayer
Chloehigh jumpyarn throwleft pawedcalico patchbelly rub
Duchessquick clawbox trapleft pawedorange stripewater sprayer
Garbanzonight visionyarn throwright pawedorange stripebelly rub
Garfieldsuper purryarn throwright pawedcalico patchwater sprayer
Cheshiresuper purrlaser pointerleft pawedmidnight blackbelly rub
Mittenssilent sneakbox trapright pawedmidnight blackwater sprayer
Sockssilent sneakmilk splashright pawedcalico patchwater sprayer
Figarosilent sneakyarn throwleft pawedorange stripebelly rub
Whiskersnight visioncatnip sprayright pawedcalico patchwater sprayer
Olivernight visionbox trapleft pawedcalico patchbelly rub
Salemsuper purrmilk splashright pawedorange stripesqueaky toy
Simbasuper purrlaser pointerleft pawedcalico patchbelly rub
Tiggersilent sneakyarn throwright pawedcalico patchbelly rub
Smokeyhigh jumplaser pointerleft pawedcalico patchsqueaky toy
Sylvesterquick clawmilk splashleft pawedcalico patchbelly rub
Pusssuper purrlaser pointerleft pawedorange stripebelly rub
Morrissilent sneakyarn throwleft pawedcalico patchbelly rub
Clue 1

Multiplication facts (1-12)

The museum guard found rows of empty cat food cans left behind. Let's multiply the rows to find out how many cans the burglar ate!

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
9
5
56
81
27
11
24
35
18
11
66
45
56
72
7
45
T
9
27
72
56
18
22
16
35
50
72
80
35
18
72
5
1 × 9 =T
10 × 8 =P
12 × 2 =G
1 × 7 =N
3 × 9 =U
5 × 9 =O
9 × 9 =B
5 × 1 =H
2 × 11 =M
6 × 12 =S
10 × 5 =K
2 × 9 =A
8 × 2 =I
7 × 8 =E
11 × 6 =D
11 × 1 =R
7 × 5 =L
0/17 letters found
Clue 2

Rounding

We check the security laser display, but the screen only shows rounded numbers. Round the distance of the tracks to get a clean signal!

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
700
370
30
1700
900
7000
130
70
1300
430
50
T
700
5000
5000
370
3000
130
7000
900
30
4300
T
700
70
7000
130
Round 679 to the nearest hundredT
Round 4,273 to the nearest hundredF
Round 67 to the nearest tenP
Round 945 to the nearest hundredL
Round 48 to the nearest tenN
Round 7,199 to the nearest thousandA
Round 32 to the nearest tenE
Round 426 to the nearest tenI
Round 4,659 to the nearest thousandS
Round 126 to the nearest tenW
Round 1,681 to the nearest hundredC
Round 1,332 to the nearest hundredR
Round 374 to the nearest tenH
Round 2,744 to the nearest thousandO
0/14 letters found
Clue 3

Addition

The curator is adding up the recovered cat toys. Help count the shiny bells and plastic mice to get our next big lead!

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
6927
7372
5671
2424
7943
5671
3016
8532
4013
5676
7943
2424
5875
4013
7577
4686
3016
3290
5671
3483
3483
6849
4013
5676
3290
3782 + 3145 =T
5150 + 3382 =K
3588 + 3989 =O
2481 + 5462 =N
2131 + 3540 =E
1727 + 1563 =B
1885 + 3990 =F
3102 + 4270 =H
4406 + 2443 =Y
1405 + 1019 =S
1951 + 2062 =R
2817 + 1869 =M
1247 + 2236 =L
3911 + 1765 =U
933 + 2083 =A
0/15 letters found
Clue 4

Subtraction

Someone stole tuna cans from the pantry! Subtract the leftover cans from the starting total to find out how many are missing.

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
2726
5785
6714
6758
2605
1372
3619
2532
8749
2532
6079
8822
8749
6758
3366
2532
5758
8749
2002
6714
2605
2794
5400 - 2674 =W
13474 - 4652 =I
9480 - 3722 =T
3592 - 226 =P
7055 - 976 =L
8070 - 1312 =O
3700 - 906 =R
2624 - 92 =A
7376 - 3757 =D
5241 - 3239 =H
2955 - 1583 =N
10155 - 3441 =F
10751 - 2002 =C
6109 - 324 =E
3646 - 1041 =U
0/15 letters found
Clue 5

Division facts (1-12) — the last clue

We found a pile of fish treats to share equally among the detective pups. Divide them up to unlock the final clue!

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
100 ÷ 10 = ?
45 ÷ 9 = ?
48 ÷ 8 = ?
72 ÷ 6 = ?
99 ÷ 11 = ?
49 ÷ 7 = ?
20 ÷ 10 = ?
99 ÷ 9 = ?
24 ÷ 3 = ?
48 ÷ 12 = ?
15 ÷ 5 = ?
Step 2 — cross out the sentence with each answer
1.The villain shakes the windows with a super purr, then distracts the museum drones with a laser pointer.
2.The villain swipes the lock open with a quick claw, then tangles up the guard dogs with a yarn throw.
3.The villain navigates the dark museum using night vision, then distracts the museum drones with a laser pointer.
4.The villain shakes the windows with a super purr, then tricks the museum guards with a cardboard box trap.
5.The villain makes a giant high jump over the laser beams, then tangles up the guard dogs with a yarn throw.
6.The villain navigates the dark museum using night vision, then tricks the museum guards with a cardboard box trap.
7.The villain navigates the dark museum using night vision, then makes a messy escape using a milk splash.
8.The villain swipes the lock open with a quick claw, then confuses the security guards with catnip spray.
9.The villain slips through the halls with a silent sneak, then makes a messy escape using a milk splash.
10.The villain slips through the halls with a silent sneak, then tangles up the guard dogs with a yarn throw.
11.The villain swipes the lock open with a quick claw, then distracts the museum drones with a laser pointer.
12.The villain slips through the halls with a silent sneak, then tricks the museum guards with a cardboard box trap.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 4 math
Math topics
Multiplication, Rounding, Addition, Subtraction, Division
Reading level
grades 3-4
Theme
The Great Catnip Caper — set in the Whisker Museum of Fine Tuna
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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