Math Crackers
🔎 The kid polise stashion the Grade 5Reading: grades 5-6AdditionSubtractionFractions of a numberMultiplication

The Great Cafeteria Heist

Someone has raided the Junior Police Precinct kitchen! Chef Joshua Dax Zeno was about to serve his famous giant blueberry muffins, but they have vanished. The Kid Police need to examine the clues, solve the math cases, and find the Cafeteria Bandit before lunch patrol!

Suspects

Possible suspects

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

21 of 21 still in play
NameSignature ToolDisguise ItemWriting HandMessy Hair ColorFavorite Snack
Officer Harpersticky foam blasterfake mustachewrites left handedneon green hairsour gummy worms
Detective Ellamega megaphonefancy tuxedo capewrites left handedneon green hairsalty potato chips
Agent Finnclue magnifying glassoversized chef hatwrites right handedbright orange hairbubblegum ice cream
Deputy Chloelaser flashlightoversized chef hatwrites left handedelectric blue hairbubblegum ice cream
Agent Jacksticky foam blastershiny pilot goggleswrites right handedelectric blue hairsalty potato chips
Officer Gracehigh speed scooterclown nose disguisewrites left handedbright orange hairbubblegum ice cream
Detective Zenosticky foam blasterclown nose disguisewrites right handedelectric blue hairbubblegum ice cream
Detective Zoelaser flashlightfake mustachewrites right handedneon green hairbubblegum ice cream
Sergeant Brodyclue magnifying glassfancy tuxedo capewrites left handedneon green hairsalty potato chips
Deputy Joshualaser flashlightfancy tuxedo capewrites right handedneon green hairbubblegum ice cream
Officer Mayahigh speed scooterfake mustachewrites right handedelectric blue hairbubblegum ice cream
Officer Rubymega megaphoneoversized chef hatwrites right handedelectric blue hairbubblegum ice cream
Sgt Marcusmega megaphoneshiny pilot goggleswrites right handedelectric blue hairsour gummy worms
Cadet Samlaser flashlightshiny pilot goggleswrites right handedelectric blue hairbubblegum ice cream
Deputy Miaclue magnifying glassshiny pilot goggleswrites right handedbright orange hairsalty potato chips
Agent Coopermega megaphonefake mustachewrites right handedelectric blue hairbubblegum ice cream
Cadet Maxmega megaphoneoversized chef hatwrites left handedbright orange hairbubblegum ice cream
Officer Daxmega megaphoneclown nose disguisewrites left handedbright orange hairbubblegum ice cream
Chief Rexmega megaphonefake mustachewrites right handedneon green hairbubblegum ice cream
Chief Tobylaser flashlightoversized chef hatwrites right handedbright orange hairbubblegum ice cream
Cadet Masonsticky foam blasterfake mustachewrites right handedelectric blue hairsour gummy worms
Clue 1

Addition

To find the first clue, the rookies must count and add up all the shiny badge stickers scattered across the precinct floor.

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
6990
6397
9451
6723
8233
8248
5943
5391
T
6990
5943
7526
9451
7952
8248
7526
T
6990
5705
9451
8233
7458
3553
5391
2725
7526
T
6990
2779
7526
2779
2779
2725
9451
7952
3933 + 3057 =T
3356 + 4877 =A
3239 + 2466 =W
4041 + 1902 =D
5214 + 2738 =S
3005 + 4521 =O
5722 + 2526 =N
1032 + 1747 =G
828 + 1897 =L
4306 + 2417 =B
2095 + 4302 =H
2447 + 1106 =P
4940 + 2518 =R
3158 + 6293 =E
3034 + 2357 =I
0/15 letters found
Clue 2

Subtraction

Chef Joshua noticed some baking ingredients were missing. Subtracting the remaining flour sacks from the morning inventory reveals a hidden message.

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
6553
3192
8074
6683
4499
4271
8117
8074
3233
6683
8074
4806
8074
4806
2856
T
6553
8074
8464
1788
3233
8464
4499
4271
T
6553
T
6553
8074
4806
4499
4271
8232
3192
T
6553
3192
1788
4806
4482
8074
4482
8032 - 1479 =T
12644 - 4527 =M
9604 - 1140 =W
7603 - 3332 =I
6542 - 2043 =R
10364 - 2290 =E
8850 - 2167 =C
3958 - 725 =S
5846 - 2654 =H
4682 - 2894 =A
6140 - 1334 =N
10902 - 2670 =G
6446 - 1964 =D
3719 - 863 =O
0/14 letters found
Clue 3

Fractions of a number

Officer Dax found a box of case files, but only a fraction of them belong to today's shift. Solving this fraction unlocks the suspect's hair color file.

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
40
23
38
14
24
28
29
37
32
28
11
32
8
23
8
26
23
17
12
29
26
32
37
3
28
23
17
26
19
9
23
29
14
14
26
2/6 of 120 =W
9/10 of 10 =H
1/4 of 92 =E
3/8 of 8 =S
3/6 of 38 =T
4/6 of 48 =I
4/8 of 52 =R
2/3 of 21 =O
2/8 of 48 =M
1/4 of 152 =F
1/4 of 112 =N
1/10 of 170 =A
2/4 of 22 =K
1/8 of 192 =U
2/10 of 185 =P
3/6 of 58 =D
4/8 of 16 =C
0/17 letters found
Clue 4

Multiplication facts (1-12)

The suspect left boot prints in the spilled cocoa powder. Multiplying the rows of prints reveals the exact shoe size and the bandit's weakness.

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
66
63
88
60
77
21
22
5
21
63
110
63
18
25
132
30
18
14
110
77
63
48
5
30
132
60
21
25
48
63
5
27
132
60
21
6 × 11 =W
11 × 10 =L
7 × 2 =B
7 × 11 =U
5 × 6 =I
5 × 12 =O
11 × 12 =R
11 × 2 =D
12 × 4 =H
7 × 9 =E
3 × 6 =C
5 × 5 =T
1 × 5 =A
9 × 3 =P
3 × 7 =N
8 × 11 =F
0/16 letters found
Clue 5

Fractions of a number — the last clue

Detective Zeno intercepted a coded radio transmission. Calculating the correct fraction of the frequency numbers pinpoints the suspect's writing hand.

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 2 = ?
1/5 of 35 = ?
1/8 of 16 = ?
1/10 of 40 = ?
1/2 of 12 = ?
1/3 of 15 = ?
4/8 of 22 = ?
2/6 of 9 = ?
2/8 of 48 = ?
4/6 of 15 = ?
1/3 of 24 = ?
Step 2 — cross out the sentence with each answer
1.The villain swiped the secret muffin recipe, then zoomed away on a kid-sized bike.
2.The villain swiped the secret muffin recipe, then escaped out the fire exit door.
3.The villain swiped the secret muffin recipe, then dashed into the main briefing room.
4.The villain emptied the chocolate chip jar, then zoomed away on a kid-sized bike.
5.The villain emptied the chocolate chip jar, then dashed into the main briefing room.
6.The villain unlocked the secure walk-in freezer, then dashed into the main briefing room.
7.The villain snatched the golden mixing spoon, then climbed through the kitchen window.
8.The villain tipped over the giant flour bin, then zoomed away on a kid-sized bike.
9.The villain unlocked the secure walk-in freezer, then zoomed away on a kid-sized bike.
10.The villain snatched the golden mixing spoon, then dashed into the main briefing room.
11.The villain unlocked the secure walk-in freezer, then climbed through the kitchen window.
12.The villain tipped over the giant flour bin, then escaped out the fire exit door.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 5 math
Math topics
Addition, Subtraction, Fractions of a number, Multiplication
Reading level
grades 5-6
Theme
The Great Cafeteria Heist — set in Junior Police Precinct No. 9 Kitchen
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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