🐱 CatsGrade 4Reading: grades 3-4MultiplicationFractions of a numberRoundingAddition

The Great Fish Market Heist

Oh no! Someone has snuck into the Golden Fish Market and snatched the legendary Sparkly Salmon! Detective Whiskers of the Mew-York Police Department needs your help to crack the case and find the thief.

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	Claw Skill	Stealth Gear	Collar Color	Fur Coat	Fear
Tom	Silent Pounce	Squeaky Mouse	Blue Collar	Calico Patches	Crinkly Paper
Boots	Mega Meow	Shiny Bell	Blue Collar	Tabby Stripes	Cucumber Scare
Simba	High Jump	Feather Wand	Blue Collar	Tuxedo Coat	Water Squirt
Ziggy	Super Scratch	Shiny Bell	Red Collar	Calico Patches	Crinkly Paper
Morris	Mega Meow	Feather Wand	Blue Collar	Tabby Stripes	Crinkly Paper
Garfield	Super Scratch	Laser Pointer	Red Collar	Tabby Stripes	Crinkly Paper
Luna	Mega Meow	Laser Pointer	Blue Collar	Tuxedo Coat	Water Squirt
Figaro	Super Scratch	Shiny Bell	Blue Collar	Calico Patches	Crinkly Paper
Ginger	Super Scratch	Laser Pointer	Blue Collar	Calico Patches	Cucumber Scare
Smokey	High Jump	Cardboard Shield	Blue Collar	Tabby Stripes	Crinkly Paper
Socks	Fast Chase	Cardboard Shield	Red Collar	Tabby Stripes	Crinkly Paper
Barnaby	Silent Pounce	Laser Pointer	Blue Collar	Calico Patches	Cucumber Scare
Sylvester	Mega Meow	Squeaky Mouse	Red Collar	Tuxedo Coat	Water Squirt
Bella	High Jump	Squeaky Mouse	Blue Collar	Calico Patches	Crinkly Paper
Felix	High Jump	Feather Wand	Red Collar	Calico Patches	Crinkly Paper
Penelope	High Jump	Feather Wand	Blue Collar	Calico Patches	Crinkly Paper
Cleo	Silent Pounce	Shiny Bell	Red Collar	Calico Patches	Crinkly Paper
Milo	Fast Chase	Shiny Bell	Blue Collar	Tuxedo Coat	Crinkly Paper
Shadow	Super Scratch	Laser Pointer	Blue Collar	Tuxedo Coat	Crinkly Paper
Mittens	Super Scratch	Cardboard Shield	Blue Collar	Tuxedo Coat	Water Squirt
Chloe	Super Scratch	Cardboard Shield	Blue Collar	Calico Patches	Crinkly Paper

Clue 1

Multiplication facts (1-12)

Detective Whiskers finds a stack of canned tuna arranged in neat rows. To find the total cans, we must multiply the rows together.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

110

3 × 2 =T

1 × 5 =W

4 × 1 =O

1 × 2 =H

10 × 5 =N

6 × 11 =I

10 × 3 =D

4 × 2 =B

1 × 11 =S

10 × 11 =E

4 × 10 =R

3 × 3 =U

11 × 4 =A

3 × 5 =F

0/14 letters found

Clue 2

Fractions of a number

The alley cats agree to share a bowl of tasty treats. We need to find what fraction of the treats goes to each hungry kitten.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

2/10 of 150 =T

3/6 of 46 =U

4/8 of 80 =I

4/10 of 35 =E

3/8 of 16 =H

3/10 of 90 =W

1/8 of 80 =B

1/5 of 110 =R

2/6 of 45 =L

2/4 of 6 =S

1/2 of 66 =P

5/8 of 32 =N

4/5 of 40 =C

8/10 of 10 =O

4/8 of 18 =Y

6/10 of 20 =A

0/16 letters found

Clue 3

Rounding

The security laser scale only shows rounded numbers. We must round the heavy paw print weight to the nearest ten to unlock the gate.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

370

2000

430

300

290

110

130

2900

290

9000

3700

900

130

5000

3000

1100

700

430

300

370

290

430

2900

370

2000

430

500

Round 368 to the nearest tenT

Round 1,058 to the nearest hundredY

Round 134 to the nearest tenN

Round 94 to the nearest tenP

Round 431 to the nearest tenE

Round 871 to the nearest hundredI

Round 289 to the nearest tenO

Round 8,739 to the nearest thousandF

Round 2,879 to the nearest thousandL

Round 1,824 to the nearest thousandH

Round 3,743 to the nearest hundredC

Round 31 to the nearest tenR

Round 4,707 to the nearest thousandK

Round 258 to the nearest hundredS

Round 2,862 to the nearest hundredD

Round 532 to the nearest hundredM

Round 110 to the nearest tenU

Round 748 to the nearest hundredA

0/18 letters found

Clue 4

Addition

To follow the paw prints, we need to add up all the yarn balls found in the kitchen and 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.

6347

4565

8579

7145

8579

3772

3435

6417

2340

3435

5297

3776

2340

6106

7753

5880

7145

5297

8579

7753

6347

7956

3208

6347

4565

8579

8251

6106

7145

3892 + 2455 =T

3323 + 1974 =L

1326 + 2109 =A

4174 + 3579 =F

3119 + 1446 =H

1758 + 2018 =I

1610 + 1598 =Y

3468 + 2638 =O

796 + 1544 =C

2096 + 1676 =W

4564 + 3687 =D

4627 + 2518 =R

3740 + 4839 =E

3642 + 2775 =S

4079 + 1801 =U

4197 + 3759 =B

0/16 letters found

Clue 5

Fractions of a number — the last clue

The friendly neighborhood birds saw the bandit run past. If they share a box of crackers, we can find out who gets the biggest fraction.

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

2/4 of 14 = ?

4/6 of 9 = ?

1/4 of 20 = ?

4/10 of 25 = ?

4/8 of 8 = ?

1/4 of 36 = ?

2/3 of 3 = ?

2/10 of 40 = ?

2/8 of 4 = ?

4/8 of 24 = ?

2/10 of 55 = ?

Step 2 — cross out the sentence with each answer

1.The villain pounced silently from above, then rang a tiny shiny bell.

2.The villain pounced silently from above, then waved a bright feather wand.

3.The villain scratched the wooden walls, then blocked the security cameras with a cardboard shield.

4.The villain chased down the delivery van, then blocked the security cameras with a cardboard shield.

5.The villain pounced silently from above, then distracted the watchdogs with a squeaky mouse.

6.The villain jumped over the high fence, then distracted the watchdogs with a squeaky mouse.

7.The villain scratched the wooden walls, then rang a tiny shiny bell.

8.The villain meowed loudly to distract the guards, then rang a tiny shiny bell.

9.The villain pounced silently from above, then blocked the security cameras with a cardboard shield.

10.The villain pounced silently from above, then shined a glowing laser pointer.

11.The villain chased down the delivery van, then rang a tiny shiny bell.

12.The villain meowed loudly to distract the guards, then shined a glowing laser pointer.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Great Fish Market Heist

Culprit: Chloe (Super Scratch · Cardboard Shield · Blue Collar · Calico Patches · Crinkly Paper)

Clue 1 (Multiplication facts (1-12)): "THE BANDIT DOES NOT USE A FEATHER WAND"
3 × 2 = 6 (T) · 1 × 5 = 5 (W) · 4 × 1 = 4 (O) · 1 × 2 = 2 (H) · 10 × 5 = 50 (N) · 6 × 11 = 66 (I) · 10 × 3 = 30 (D) · 4 × 2 = 8 (B) · 1 × 11 = 11 (S) · 10 × 11 = 110 (E) · 4 × 10 = 40 (R) · 3 × 3 = 9 (U) · 11 × 4 = 44 (A) · 3 × 5 = 15 (F)
Clue 2 (Fractions of a number): "THE SUSPECT WORE A SHINY BLUE COLLAR"
2/10 of 150 = 30 (T) · 3/6 of 46 = 23 (U) · 4/8 of 80 = 40 (I) · 4/10 of 35 = 14 (E) · 3/8 of 16 = 6 (H) · 3/10 of 90 = 27 (W) · 1/8 of 80 = 10 (B) · 1/5 of 110 = 22 (R) · 2/6 of 45 = 15 (L) · 2/4 of 6 = 3 (S) · 1/2 of 66 = 33 (P) · 5/8 of 32 = 20 (N) · 4/5 of 40 = 32 (C) · 8/10 of 10 = 8 (O) · 4/8 of 18 = 9 (Y) · 6/10 of 20 = 12 (A)
Clue 3 (Rounding): "THE SOUND OF CRINKLY PAPER STOPPED THEM"
Round 368 to the nearest ten = 370 (T) · Round 1,058 to the nearest hundred = 1100 (Y) · Round 134 to the nearest ten = 130 (N) · Round 94 to the nearest ten = 90 (P) · Round 431 to the nearest ten = 430 (E) · Round 871 to the nearest hundred = 900 (I) · Round 289 to the nearest ten = 290 (O) · Round 8,739 to the nearest thousand = 9000 (F) · Round 2,879 to the nearest thousand = 3000 (L) · Round 1,824 to the nearest thousand = 2000 (H) · Round 3,743 to the nearest hundred = 3700 (C) · Round 31 to the nearest ten = 30 (R) · Round 4,707 to the nearest thousand = 5000 (K) · Round 258 to the nearest hundred = 300 (S) · Round 2,862 to the nearest hundred = 2900 (D) · Round 532 to the nearest hundred = 500 (M) · Round 110 to the nearest ten = 110 (U) · Round 748 to the nearest hundred = 700 (A)
Clue 4 (Addition): "THERE WAS CALICO FUR LEFT BY THE DOOR"
3892 + 2455 = 6347 (T) · 3323 + 1974 = 5297 (L) · 1326 + 2109 = 3435 (A) · 4174 + 3579 = 7753 (F) · 3119 + 1446 = 4565 (H) · 1758 + 2018 = 3776 (I) · 1610 + 1598 = 3208 (Y) · 3468 + 2638 = 6106 (O) · 796 + 1544 = 2340 (C) · 2096 + 1676 = 3772 (W) · 4564 + 3687 = 8251 (D) · 4627 + 2518 = 7145 (R) · 3740 + 4839 = 8579 (E) · 3642 + 2775 = 6417 (S) · 4079 + 1801 = 5880 (U) · 4197 + 3759 = 7956 (B)
Clue 5 (Fractions of a number): surviving statement (box 3) → Chloe
2/4 of 14 = 7 · 4/6 of 9 = 6 · 1/4 of 20 = 5 · 4/10 of 25 = 10 · 4/8 of 8 = 4 · 1/4 of 36 = 9 · 2/3 of 3 = 2 · 2/10 of 40 = 8 · 2/8 of 4 = 1 · 4/8 of 24 = 12 · 2/10 of 55 = 11

About this mystery

Grade level: Grade 4 math
Math topics: Multiplication, Fractions of a number, Rounding, Addition
Reading level: grades 3-4
Theme: The Great Fish Market Heist — set in Mew-York City
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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