🐶 DogsGrade 4Reading: grades 3-4SubtractionBar modelsAdditionWord problemsDivision

The Great Barkington Trophy Mystery

The golden trophy bone went missing right before the big dog show grand final! Detective Pup is searching the agility arena to catch the sneaky thief before the final ribbon is awarded.

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	Trick Skill	Dog Gear	Bandana Style	Fur Coat	Distraction
Oliver Hound	Barrel Roll	Squeaky Ball	Red Polka Dots	Smooth Retriever Fur	Peanut Butter Treat
Bailey Beagle	Moonwalk Jump	Squeaky Ball	Red Polka Dots	Curly Poodle Fur	Bacon Chew Toy
Zoey Poodle	Backflip	Golden Leash	Blue Stripes	Smooth Retriever Fur	Squeaky Duck
Penny Pug	High Five	Golden Leash	Blue Stripes	Curly Poodle Fur	Squeaky Duck
Bear Bulldog	Hoop Jump	Squeaky Ball	Red Polka Dots	Curly Poodle Fur	Peanut Butter Treat
Roxy Pointer	High Five	Squeaky Ball	Red Polka Dots	Curly Poodle Fur	Bacon Chew Toy
Luna Leash	Backflip	Squeaky Ball	Red Polka Dots	Curly Poodle Fur	Peanut Butter Treat
Buster Barkington	Hoop Jump	Doggy Backpack	Blue Stripes	Curly Poodle Fur	Peanut Butter Treat
Stella Husky	Barrel Roll	Plush Donut	Blue Stripes	Curly Poodle Fur	Peanut Butter Treat
Cooper Corgi	Hoop Jump	Golden Leash	Red Polka Dots	Curly Poodle Fur	Squeaky Duck
Teddy Whippet	Barrel Roll	Golden Leash	Red Polka Dots	Shaggy Terrier Fur	Squeaky Duck
Leo Boxer	Moonwalk Jump	Plush Donut	Red Polka Dots	Smooth Retriever Fur	Peanut Butter Treat
Charlie Chew	High Five	Doggy Backpack	Blue Stripes	Curly Poodle Fur	Squeaky Duck
Bella Biscuit	Barrel Roll	Doggy Backpack	Red Polka Dots	Curly Poodle Fur	Squeaky Duck
Duke Dalmatian	Backflip	Doggy Backpack	Blue Stripes	Curly Poodle Fur	Squeaky Duck
Lola Spaniel	High Five	Squeaky Ball	Blue Stripes	Smooth Retriever Fur	Bacon Chew Toy
Max Muzzle	Barrel Roll	Plush Donut	Red Polka Dots	Curly Poodle Fur	Peanut Butter Treat
Ruby Pinscher	Backflip	Golden Leash	Red Polka Dots	Curly Poodle Fur	Squeaky Duck
Daisy Doolittle	Moonwalk Jump	Tennis Launcher	Red Polka Dots	Curly Poodle Fur	Squeaky Duck
Nala Collie	Moonwalk Jump	Golden Leash	Red Polka Dots	Shaggy Terrier Fur	Peanut Butter Treat
Milo Mastiff	Moonwalk Jump	Squeaky Ball	Red Polka Dots	Curly Poodle Fur	Squeaky Duck

Clue 1

Subtraction

Detective Pup draws a bar model on his notepad to compare the dog agility scores and uncover the first clue.

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

5881

4661

6382

8981

4474

3081

8122

4474

1111

3580

1884

6382

8384

1111

1884

5881

4406

8122

1567

3398

8122

3580

1884

8308

3398

8102

8122

4406

4350

4216

8122

4406

4350

8600 - 2719 =T

6751 - 2535 =P

12771 - 4387 =S

6629 - 3049 =D

3747 - 666 =L

11325 - 2344 =V

2706 - 1139 =R

6412 - 4528 =O

5606 - 2208 =Y

4988 - 327 =H

11110 - 2802 =G

7168 - 2818 =K

5938 - 1464 =I

5732 - 1326 =C

9263 - 1161 =B

8307 - 1925 =E

10290 - 2168 =A

2021 - 910 =N

0/18 letters found

Clue 2

Bar model word problems

Detective Pup subtracts the missing agility cones from the main storage locker to decode the next secret.

Draw a bar model to solve each word problem. Its answer reveals a letter — write the letters in the boxes to fill in the missing word.

Awitnesssawthevillainwas

109

136

127

137

136

There were 114 tennis balls in all. 5 tennis balls were used. How many tennis balls are left?

draw a bar model

Answer:→R

There were 45 chew toys in all. 21 chew toys were used. How many chew toys are left?

draw a bar model

Answer:→D

There were 155 dog biscuits in all. 28 dog biscuits were used. How many dog biscuits are left?

draw a bar model

Answer:→L

The red team has 149 dog biscuits and the blue team has 13 dog biscuits. How many more dog biscuits does the red team have?

draw a bar model

Answer:→O

There were 168 tennis balls in all. 31 tennis balls were used. How many tennis balls are left?

draw a bar model

Answer:→K

Trainer Toby shares 188 dog biscuits equally among 2 teams. How many dog biscuits does each team get?

draw a bar model

Answer:→E

One group collected 13 tennis balls and another group collected 32 tennis balls. How many tennis balls in all?

draw a bar model

Answer:→P

0/7 letters found

Clue 3

Addition

Detective Pup adds up all the bone treats left near the obstacle course to reveal another clue.

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

6065

6109

6081

6886

8325

6886

6072

6081

6722

6065

3034

6886

2472

6081

5767

6549

6065

2561

6886

6300

8325

6081

5767

6549

2696

5289

8325

6722

6549

6886

3031 + 3034 =T

3044 + 2245 =D

1721 + 975 =Y

5144 + 3181 =U

3918 + 2191 =H

4181 + 1900 =E

1463 + 1009 =W

2736 + 4150 =S

3536 + 2536 =P

4687 + 2035 =C

1430 + 1131 =O

3262 + 2505 =A

1126 + 1908 =I

2725 + 3575 =Q

3040 + 3509 =K

0/15 letters found

Clue 4

Word problems

Detective Pup solves a word problem hidden inside the dog trainer handbook to spot the next detail.

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

Astrandof

hairturnedupatthescene.

Trainer Toby found 23 tennis balls yesterday and 36 more today. How many tennis balls in all?C

Trainer Toby found 6 chew toys yesterday and 35 more today. How many chew toys in all?U

Trainer Toby lined up 3 rows of 9 chew toys. How many chew toys in all?L

Trainer Toby lined up 11 rows of 7 agility cones. How many agility cones in all?Y

Trainer Toby lined up 7 rows of 2 dog biscuits. How many dog biscuits in all?O

There were 28 chew toys. 2 were used up. How many chew toys are left?P

Trainer Toby found 9 dog biscuits yesterday and 4 more today. How many dog biscuits in all?R

0/7 letters found

Clue 5

Division facts (1-12) — the last clue

Detective Pup divides the tennis balls evenly into training baskets to crack 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

70 ÷ 10 = ?

30 ÷ 6 = ?

4 ÷ 1 = ?

30 ÷ 10 = ?

12 ÷ 6 = ?

11 ÷ 11 = ?

45 ÷ 5 = ?

96 ÷ 8 = ?

50 ÷ 5 = ?

12 ÷ 2 = ?

32 ÷ 4 = ?

Step 2 — cross out the sentence with each answer

1.The villain did a quick barrel roll, then squeezed a plush donut.

2.The villain leapt through a hoop, then fired a tennis launcher.

3.The villain nailed a backflip, then tossed a squeaky ball.

4.The villain leapt through a hoop, then clipped a golden leash.

5.The villain showed off a moonwalk jump, then tossed a squeaky ball.

6.The villain performed a high five, then tossed a squeaky ball.

7.The villain showed off a moonwalk jump, then fired a tennis launcher.

8.The villain leapt through a hoop, then zipped a doggy backpack.

9.The villain did a quick barrel roll, then clipped a golden leash.

10.The villain did a quick barrel roll, then fired a tennis launcher.

11.The villain nailed a backflip, then clipped a golden leash.

12.The villain performed a high five, then zipped a doggy backpack.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Great Barkington Trophy Mystery

Culprit: Ruby Pinscher (Backflip · Golden Leash · Red Polka Dots · Curly Poodle Fur · Squeaky Duck)

Clue 1 (Subtraction): "THE VILLAIN DOES NOT CARRY A DOGGY BACKPACK"
8600 - 2719 = 5881 (T) · 6751 - 2535 = 4216 (P) · 12771 - 4387 = 8384 (S) · 6629 - 3049 = 3580 (D) · 3747 - 666 = 3081 (L) · 11325 - 2344 = 8981 (V) · 2706 - 1139 = 1567 (R) · 6412 - 4528 = 1884 (O) · 5606 - 2208 = 3398 (Y) · 4988 - 327 = 4661 (H) · 11110 - 2802 = 8308 (G) · 7168 - 2818 = 4350 (K) · 5938 - 1464 = 4474 (I) · 5732 - 1326 = 4406 (C) · 9263 - 1161 = 8102 (B) · 8307 - 1925 = 6382 (E) · 10290 - 2168 = 8122 (A) · 2021 - 910 = 1111 (N)
Clue 2 (Bar model word problems): "RED POLKA DOTS"
There were 114 tennis balls in all. 5 tennis balls were used. How many tennis balls are left? = 109 (R) · There were 45 chew toys in all. 21 chew toys were used. How many chew toys are left? = 24 (D) · There were 155 dog biscuits in all. 28 dog biscuits were used. How many dog biscuits are left? = 127 (L) · The red team has 149 dog biscuits and the blue team has 13 dog biscuits. How many more dog biscuits does the red team have? = 136 (O) · There were 168 tennis balls in all. 31 tennis balls were used. How many tennis balls are left? = 137 (K) · Trainer Toby shares 188 dog biscuits equally among 2 teams. How many dog biscuits does each team get? = 94 (E) · One group collected 13 tennis balls and another group collected 32 tennis balls. How many tennis balls in all? = 45 (P)
Clue 3 (Addition): "THE SUSPECT IS WEAK TO SQUEAKY DUCKS"
3031 + 3034 = 6065 (T) · 3044 + 2245 = 5289 (D) · 1721 + 975 = 2696 (Y) · 5144 + 3181 = 8325 (U) · 3918 + 2191 = 6109 (H) · 4181 + 1900 = 6081 (E) · 1463 + 1009 = 2472 (W) · 2736 + 4150 = 6886 (S) · 3536 + 2536 = 6072 (P) · 4687 + 2035 = 6722 (C) · 1430 + 1131 = 2561 (O) · 3262 + 2505 = 5767 (A) · 1126 + 1908 = 3034 (I) · 2725 + 3575 = 6300 (Q) · 3040 + 3509 = 6549 (K)
Clue 4 (Word problems): "CURLY POODLE FUR"
Trainer Toby found 23 tennis balls yesterday and 36 more today. How many tennis balls in all? = 59 (C) · Trainer Toby found 6 chew toys yesterday and 35 more today. How many chew toys in all? = 41 (U) · Trainer Toby lined up 3 rows of 9 chew toys. How many chew toys in all? = 27 (L) · Trainer Toby lined up 11 rows of 7 agility cones. How many agility cones in all? = 77 (Y) · Trainer Toby lined up 7 rows of 2 dog biscuits. How many dog biscuits in all? = 14 (O) · There were 28 chew toys. 2 were used up. How many chew toys are left? = 26 (P) · Trainer Toby found 9 dog biscuits yesterday and 4 more today. How many dog biscuits in all? = 13 (R)
Clue 5 (Division facts (1-12)): surviving statement (box 11) → Ruby Pinscher
70 ÷ 10 = 7 · 30 ÷ 6 = 5 · 4 ÷ 1 = 4 · 30 ÷ 10 = 3 · 12 ÷ 6 = 2 · 11 ÷ 11 = 1 · 45 ÷ 5 = 9 · 96 ÷ 8 = 12 · 50 ÷ 5 = 10 · 12 ÷ 2 = 6 · 32 ÷ 4 = 8

About this mystery

Grade level: Grade 4 math
Math topics: Subtraction, Bar models, Addition, Word problems, Division
Reading level: grades 3-4
Theme: The Great Barkington Trophy Mystery — set in Barkington Canine Academy Arena
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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