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

The Case of the Golden Tuna

The Golden Tuna Statue has been swiped from the Purrville Museum! Mayor Whiskers needs the Kitty Squad to track down the sneaky cat burglar before the big fish feast tonight.

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 AbilitySecret SkillDominant PawCoat StyleGreatest Fear
FigaroSuper JumpCatnip FloatingLeft PawedBlack Cat FurSpray Water Bottle
BerliozFast ScratchingCatnip FloatingRight PawedOrange Tabby FurSpray Water Bottle
FluffyLoud PurringChasing LasersLeft PawedBlack Cat FurVacuum Cleaner Hum
SnowballSilent SneakingTuna SniffingRight PawedBlack Cat FurSpray Water Bottle
BootsFast ScratchingYarn TanglingRight PawedCalico Patched FurVacuum Cleaner Hum
SylvesterSuper JumpCatnip FloatingRight PawedOrange Tabby FurSqueaky Toy Noise
WhiskersNight VisionCatnip FloatingRight PawedOrange Tabby FurSpray Water Bottle
SalemNight VisionChasing LasersLeft PawedCalico Patched FurSqueaky Toy Noise
FelixFast ScratchingChasing LasersLeft PawedBlack Cat FurSpray Water Bottle
MorrisFast ScratchingYarn TanglingRight PawedOrange Tabby FurSpray Water Bottle
ChloeLoud PurringTuna SniffingRight PawedCalico Patched FurVacuum Cleaner Hum
OliverLoud PurringClimbing WallsLeft PawedOrange Tabby FurSqueaky Toy Noise
NalaFast ScratchingCatnip FloatingLeft PawedBlack Cat FurSpray Water Bottle
LunaSilent SneakingYarn TanglingRight PawedOrange Tabby FurVacuum Cleaner Hum
SimbaSilent SneakingTuna SniffingRight PawedOrange Tabby FurSpray Water Bottle
MittensSuper JumpCatnip FloatingLeft PawedCalico Patched FurSqueaky Toy Noise
MarieFast ScratchingClimbing WallsRight PawedOrange Tabby FurSpray Water Bottle
MiloSilent SneakingCatnip FloatingRight PawedOrange Tabby FurSqueaky Toy Noise
SocksLoud PurringChasing LasersLeft PawedOrange Tabby FurSpray Water Bottle
HobbesNight VisionCatnip FloatingLeft PawedOrange Tabby FurSqueaky Toy Noise
GarfieldNight VisionClimbing WallsLeft PawedBlack Cat FurSqueaky Toy Noise
Clue 1

Rounding

A fuzzy heat camera scanned the backyard. It only displays numbers rounded to the nearest ten to save power. Let us solve it to get our first 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
3700
70
300
90
230
T
3700
3000
1700
1100
200
110
230
1100
90
230
4300
4300
2900
T
3700
T
3700
230
4300
200
110
300
900
230
1100
4300
Round 3,696 to the nearest hundredT
Round 68 to the nearest tenH
Round 93 to the nearest tenC
Round 163 to the nearest hundredG
Round 254 to the nearest hundredE
Round 933 to the nearest hundredY
Round 1,092 to the nearest hundredR
Round 1,663 to the nearest hundredU
Round 107 to the nearest tenL
Round 2,620 to the nearest thousandB
Round 231 to the nearest tenA
Round 4,298 to the nearest hundredN
Round 2,934 to the nearest hundredO
0/13 letters found
Clue 2

Addition

We found a box of dropped catnip mice near the gate. Let us add up all the lost toys to find another hint.

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
2879
8904
7386
9055
4430
7386
3919
8614
6734
4131
3365
5427
8440
4070
3919
5427
2218
9055
5427
2218
8440
8904
T
2879
6369
3919
4499
7386
6070
1904 + 975 =T
2473 + 1446 =A
2096 + 2334 =N
1437 + 3062 =W
2423 + 3004 =R
1814 + 1551 =U
5584 + 3320 =H
1408 + 810 =I
5416 + 3024 =G
2336 + 3734 =D
2908 + 3461 =P
2608 + 4126 =Y
2026 + 2044 =L
4870 + 2516 =E
4739 + 3875 =K
4761 + 4294 =S
1687 + 2444 =B
0/17 letters found
Clue 3

Subtraction

The thief ate some fish treats from the pantry jar. Subtract the leftovers from the start amount to see what they took.

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
8615
3526
2565
4907
3526
7656
T
8615
2565
T
8615
3526
2565
6038
7656
T
8615
2565
7618
3995
8896
7618
7656
4907
13335 - 4720 =T
7569 - 2662 =Y
8265 - 2227 =W
4593 - 598 =S
9246 - 1628 =R
5703 - 3138 =E
4588 - 1062 =H
10051 - 2395 =A
11660 - 2764 =P
0/9 letters found
Clue 4

Multiplication facts (1-12)

The kitty squad spotted neat rows of paw prints in the mud. Multiply the rows of prints to reveal the suspect's hair color.

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
33
100
24
70
1
3
96
70
54
16
3
72
100
77
16
32
32
42
24
1
54
11 × 3 =W
9 × 8 =G
11 × 7 =T
8 × 12 =D
1 × 1 =U
7 × 10 =O
10 × 10 =E
1 × 3 =N
8 × 3 =F
2 × 8 =A
9 × 6 =R
8 × 4 =B
7 × 6 =Y
0/13 letters found
Clue 5

Division facts (1-12) — the last clue

We must split these shiny bell collars equally among the team. Divide them up to discover the villain's secret weakness.

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
56 ÷ 7 = ?
10 ÷ 2 = ?
33 ÷ 3 = ?
30 ÷ 3 = ?
60 ÷ 10 = ?
3 ÷ 3 = ?
36 ÷ 9 = ?
20 ÷ 10 = ?
70 ÷ 10 = ?
3 ÷ 1 = ?
99 ÷ 11 = ?
Step 2 — cross out the sentence with each answer
1.The villain leaped over the security lasers, then then hid behind the giant fish tank.
2.The villain leaped over the security lasers, then then meowed loudly at the moon.
3.The villain snuck through the cat flap door, then then took a quick catnap in the sun.
4.The villain leaped over the security lasers, then then took a quick catnap in the sun.
5.The villain scratched the velvet museum chairs, then then hid behind the giant fish tank.
6.The villain knocked over a glass milk bottle, then then hid behind the giant fish tank.
7.The villain scrambled up the high velvet drapes, then then left muddy paw prints on the rug.
8.The villain snuck through the cat flap door, then then hid behind the giant fish tank.
9.The villain knocked over a glass milk bottle, then then left muddy paw prints on the rug.
10.The villain scratched the velvet museum chairs, then then meowed loudly at the moon.
11.The villain leaped over the security lasers, then then batted a loose yarn ball away.
12.The villain snuck through the cat flap door, then then left muddy paw prints on the rug.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

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

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