⚽ All of the footballs are misGrade 3Reading: grades 3-4SubtractionMultiplicationSkip countingRoundingDivision

The Great CAL Blue Camp Mystery

Oh no! The morning whistle just blew at CAL Blue camp, but the big gear shed is totally empty. Every single football is missing! Teddy and his younger helpers, Miles and Margot, need to find the sneaky Ball Bandit before the big game starts.

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	Camp Cabin	Favorite Drill	Strap Style	Cap Style	Favorite Snack
Cameron Jordan	Marina Cabin	Punting Drill	Left wrist watch	Backward cap	Orange slice
Davis Webb	Marina Cabin	Tackle Drill	Left wrist watch	Backward cap	Granola bar
Steve Bartkowski	Golden Cabin	Passing Drill	Right wrist watch	Visor	Orange slice
Bryan Anger	Oski Cabin	Tackle Drill	Right wrist watch	Bucket hat	Granola bar
Patrick Laird	Golden Cabin	Snapping Drill	Left wrist watch	Bucket hat	Juice box
Alex Mack	Oski Cabin	Passing Drill	Right wrist watch	Bucket hat	Orange slice
Nnamdi Asomugha	Marina Cabin	Passing Drill	Right wrist watch	Backward cap	Orange slice
Keenan Allen	Golden Cabin	Snapping Drill	Left wrist watch	Bucket hat	Orange slice
Jaylen McCollough	Oski Cabin	Tackle Drill	Right wrist watch	Visor	Granola bar
Craig Morton	Bear Cabin	Snapping Drill	Left wrist watch	Backward cap	Juice box
Marshawn Lynch	Bear Cabin	Punting Drill	Left wrist watch	Backward cap	Juice box
Ron Rivera	Redwood Cabin	Snapping Drill	Left wrist watch	Bucket hat	Granola bar
Aaron Rodgers	Oski Cabin	Tackle Drill	Left wrist watch	Backward cap	Juice box
Daniel Lasco	Golden Cabin	Punting Drill	Left wrist watch	Bucket hat	Granola bar
Lorenzo Alexander	Redwood Cabin	Punting Drill	Left wrist watch	Bucket hat	Granola bar
Jared Goff	Golden Cabin	Punting Drill	Left wrist watch	Backward cap	Granola bar
Justin Forsett	Oski Cabin	Catching Drill	Left wrist watch	Backward cap	Juice box
Shane Vereen	Redwood Cabin	Passing Drill	Left wrist watch	Backward cap	Juice box
Richard Rodgers	Marina Cabin	Passing Drill	Right wrist watch	Backward cap	Juice box
DeSean Jackson	Redwood Cabin	Snapping Drill	Left wrist watch	Bucket hat	Juice box
Tony Gonzalez	Bear Cabin	Catching Drill	Right wrist watch	Bucket hat	Orange slice

Clue 1

Subtraction

Teddy counts the total empty gear bags in the shed. He subtracts the bags that are still there to find how many are missing. Inside one empty bag, he spots a scrap of paper with a 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.

261

889

133

192

525

149

738

420

261

738

702

133

291

149

702

261

738

702

852

525

261

852

889

420

149

790

738

522

420

675

291

334 - 73 =T

1244 - 392 =C

373 - 224 =N

905 - 380 =A

366 - 174 =B

951 - 161 =G

729 - 207 =R

919 - 217 =O

656 - 236 =I

474 - 341 =E

936 - 47 =H

1025 - 287 =D

854 - 179 =L

479 - 188 =S

0/14 letters found

Clue 2

Multiplication facts (1-12)

Margot notices rows of muddy footprints by the sandbox. She multiplies the number of rows by the prints in each row to count them. Under the last print, she finds a dropped note.

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

100

110

1 × 3 =T

5 × 10 =C

9 × 9 =Y

5 × 7 =A

7 × 8 =B

1 × 4 =H

10 × 10 =N

11 × 4 =I

3 × 4 =D

1 × 6 =S

9 × 5 =E

11 × 3 =W

4 × 9 =K

10 × 11 =R

9 × 11 =L

2 × 8 =F

0/16 letters found

Clue 3

Skip counting

Miles counts the blue flags along the camp path by twos to find his way to the mess hall. Next to the tenth flag, he finds a secret camper journal.

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

130

110

130

110

120

100

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150T

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130H

Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60N

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120V

Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18E

Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, ___, 27, 30A

Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39R

Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12W

Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25I

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65J

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100O

Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48B

Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45X

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32C

Skip-count by 5s. Fill the blank: 5, 10, 15, ___, 25, 30Y

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140G

Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27F

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30U

0/18 letters found

Clue 4

Rounding

Teddy looks at the digital camp clock, which rounds the minutes to the nearest ten when the battery is low. The rounded time helps him unlock a locker with a clue inside.

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

7000

900

7000

6000

700

7000

600

7000

2000

700

7000

8000

200

3000

300

200

800

8000

Round 7,470 to the nearest thousandA

Round 560 to the nearest hundredR

Round 92 to the nearest tenH

Round 8,343 to the nearest thousandL

Round 2,543 to the nearest thousandO

Round 46 to the nearest tenD

Round 39 to the nearest tenC

Round 788 to the nearest hundredI

Round 343 to the nearest hundredN

Round 2,213 to the nearest thousandP

Round 154 to the nearest hundredT

Round 81 to the nearest tenS

Round 62 to the nearest tenE

Round 695 to the nearest hundredW

Round 928 to the nearest hundredB

Round 33 to the nearest tenF

Round 5,670 to the nearest thousandK

0/17 letters found

Clue 5

Division facts (1-12) — the last clue

Margot shares twelve orange slices equally among the three of them. When they finish eating, they see a message written on the bottom of the empty plate!

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

8 ÷ 4 = ?

11 ÷ 11 = ?

35 ÷ 5 = ?

36 ÷ 6 = ?

40 ÷ 4 = ?

72 ÷ 6 = ?

18 ÷ 6 = ?

16 ÷ 2 = ?

18 ÷ 2 = ?

33 ÷ 3 = ?

55 ÷ 11 = ?

Step 2 — cross out the sentence with each answer

1.The villain sneaks out of Bear Cabin, then grabs the pigskin during the Punting Drill.

2.The villain tiptoes away from Oski Cabin, then steals the ball during the Tackle Drill.

3.The villain escapes from Marina Cabin, then grabs the pigskin during the Punting Drill.

4.The villain runs away from Redwood Cabin, then snatches the football during the Passing Drill.

5.The villain escapes from Marina Cabin, then pockets the ball during the Catching Drill.

6.The villain escapes from Marina Cabin, then steals the ball during the Tackle Drill.

7.The villain sneaks out of Bear Cabin, then takes the football during the Snapping Drill.

8.The villain creeps out of Golden Cabin, then grabs the pigskin during the Punting Drill.

9.The villain tiptoes away from Oski Cabin, then pockets the ball during the Catching Drill.

10.The villain creeps out of Golden Cabin, then snatches the football during the Passing Drill.

11.The villain escapes from Marina Cabin, then snatches the football during the Passing Drill.

12.The villain runs away from Redwood Cabin, then grabs the pigskin during the Punting Drill.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Great CAL Blue Camp Mystery

Culprit: Shane Vereen (Redwood Cabin · Passing Drill · Left wrist watch · Backward cap · Juice box)

Clue 1 (Subtraction): "THE BANDIT DOES NOT DO CATCHING DRILLS"
334 - 73 = 261 (T) · 1244 - 392 = 852 (C) · 373 - 224 = 149 (N) · 905 - 380 = 525 (A) · 366 - 174 = 192 (B) · 951 - 161 = 790 (G) · 729 - 207 = 522 (R) · 919 - 217 = 702 (O) · 656 - 236 = 420 (I) · 474 - 341 = 133 (E) · 936 - 47 = 889 (H) · 1025 - 287 = 738 (D) · 854 - 179 = 675 (L) · 479 - 188 = 291 (S)
Clue 2 (Multiplication facts (1-12)): "THE SNEAKY BANDIT WEARS A LEFT WRIST WATCH"
1 × 3 = 3 (T) · 5 × 10 = 50 (C) · 9 × 9 = 81 (Y) · 5 × 7 = 35 (A) · 7 × 8 = 56 (B) · 1 × 4 = 4 (H) · 10 × 10 = 100 (N) · 11 × 4 = 44 (I) · 3 × 4 = 12 (D) · 1 × 6 = 6 (S) · 9 × 5 = 45 (E) · 11 × 3 = 33 (W) · 4 × 9 = 36 (K) · 10 × 11 = 110 (R) · 9 × 11 = 99 (L) · 2 × 8 = 16 (F)
Clue 3 (Skip counting): "THE THIEF RAN AWAY WHEN GIVEN A JUICE BOX"
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (T) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (H) · Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60 = 40 (N) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120 = 100 (V) · Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18 = 12 (E) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, ___, 27, 30 = 24 (A) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (R) · Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (W) · Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25 = 15 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (J) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100 = 80 (O) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48 = 42 (B) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (X) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32 = 28 (C) · Skip-count by 5s. Fill the blank: 5, 10, 15, ___, 25, 30 = 20 (Y) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (G) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (F) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (U)
Clue 4 (Rounding): "A BACKWARD CAP WAS LEFT ON THE FIELD"
Round 7,470 to the nearest thousand = 7000 (A) · Round 560 to the nearest hundred = 600 (R) · Round 92 to the nearest ten = 90 (H) · Round 8,343 to the nearest thousand = 8000 (L) · Round 2,543 to the nearest thousand = 3000 (O) · Round 46 to the nearest ten = 50 (D) · Round 39 to the nearest ten = 40 (C) · Round 788 to the nearest hundred = 800 (I) · Round 343 to the nearest hundred = 300 (N) · Round 2,213 to the nearest thousand = 2000 (P) · Round 154 to the nearest hundred = 200 (T) · Round 81 to the nearest ten = 80 (S) · Round 62 to the nearest ten = 60 (E) · Round 695 to the nearest hundred = 700 (W) · Round 928 to the nearest hundred = 900 (B) · Round 33 to the nearest ten = 30 (F) · Round 5,670 to the nearest thousand = 6000 (K)
Clue 5 (Division facts (1-12)): surviving statement (box 4) → Shane Vereen
8 ÷ 4 = 2 · 11 ÷ 11 = 1 · 35 ÷ 5 = 7 · 36 ÷ 6 = 6 · 40 ÷ 4 = 10 · 72 ÷ 6 = 12 · 18 ÷ 6 = 3 · 16 ÷ 2 = 8 · 18 ÷ 2 = 9 · 33 ÷ 3 = 11 · 55 ÷ 11 = 5

About this mystery

Grade level: Grade 3 math
Math topics: Subtraction, Multiplication, Skip counting, Rounding, Division
Reading level: grades 3-4
Theme: The Great CAL Blue Camp Mystery — set in CAL Blue Summer Camp sports fields
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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