Math Mysteries
🔎 Pepe's poisonuous pizzaGrade 5Reading: grades 3-4Skip countingPlace valueRoundingWord problemsDivision

The Poisonous Pizza Plot

Oh no! Pepe's Pizzeria has been hit by a sneaky rogue! Someone is putting poisonous toppings onto the delicious pies, ruining dinner for everyone. You must help the kitchen crew find the culprit before the dinner rush!

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 SauceSecret HerbCarrying StyleChef Hat ColorKitchen Counter
Chef BobbySpicy JalapenoSmelly ChivesLeft-Handed CarryGreen Chef HatSpilled Flour
Luigi PepperoniSour Pickle JuiceStinky BasilRight-Handed CarryWhite Chef HatIce Water Spray
Chef MasaharuBitter GarlicSmelly ChivesLeft-Handed CarryGreen Chef HatIce Water Spray
Chef TomSour Pickle JuicePowdered PepperRight-Handed CarryWhite Chef HatSpilled Flour
Chef RachaelSpicy JalapenoSmelly ChivesRight-Handed CarryGreen Chef HatIce Water Spray
Chef RoySour Pickle JuiceWild OreganoRight-Handed CarryGreen Chef HatSoap and Water
Chef AlfredoSour Pickle JuiceWild OreganoLeft-Handed CarryGreen Chef HatSpilled Flour
Chef WolfgangSpicy JalapenoStinky BasilRight-Handed CarryWhite Chef HatSpilled Flour
Mario RossiBitter GarlicSmelly ChivesRight-Handed CarryGreen Chef HatIce Water Spray
Chef JamieFiery HabaneroStinky BasilRight-Handed CarryGreen Chef HatSpilled Flour
Chef GuyBitter GarlicStinky BasilRight-Handed CarryRed Chef HatSoap and Water
Chef MarthaSpicy JalapenoStinky BasilRight-Handed CarryRed Chef HatIce Water Spray
Chef EmerilFiery HabaneroMustard DustRight-Handed CarryWhite Chef HatSpilled Flour
Chef JacquesSpicy JalapenoMustard DustRight-Handed CarryWhite Chef HatSpilled Flour
Chef AliceBitter GarlicWild OreganoLeft-Handed CarryGreen Chef HatIce Water Spray
Chef JuliaSpicy JalapenoStinky BasilLeft-Handed CarryRed Chef HatSoap and Water
Chef InaSpicy JalapenoWild OreganoLeft-Handed CarryGreen Chef HatSpilled Flour
Chef CarlaBitter GarlicWild OreganoRight-Handed CarryWhite Chef HatSpilled Flour
Chef GiadaFiery HabaneroMustard DustLeft-Handed CarryWhite Chef HatSpilled Flour
Chef GordonSour Pickle JuiceMustard DustRight-Handed CarryRed Chef HatSoap and Water
Chef MarcusFiery HabaneroSmelly ChivesLeft-Handed CarryGreen Chef HatSoap and Water
Clue 1

Skip counting

Pepe counted the greasy pizza boxes stacked in the kitchen by twos and threes. He noticed a strange note stuck to one of the boxes.

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
24
9
120
28
12
90
80
16
T
24
80
35
120
6
90
35
T
24
8
6
120
50
35
140
80
120
20
120
80
50
120
50
50
120
20
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, ___, 27, 30T
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15H
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12U
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45O
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110N
Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18A
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32B
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10S
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160W
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140E
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24R
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60P
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100D
0/14 letters found
Clue 2

Place value

The cash register printed a weird receipt with giant numbers. We need to check the value of the hundreds digit to unlock the cash box.

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
100
8000
600
7000
400
50
50
9000
400
6000
300
4000
600
2000
T
100
8000
600
200
400
20
8000
T
100
8000
9000
6000
2000
T
100
5000
900
9000
200
200
800
400
T
100
What is the value of the 1 in 866,153?T
What is the value of the 8 in 169,845?Y
What is the value of the 5 in 65,212?O
What is the value of the 5 in 868,259?L
What is the value of the 2 in 16,266?R
What is the value of the 9 in 569,275?A
What is the value of the 4 in 684,106?S
What is the value of the 9 in 86,963?C
What is the value of the 8 in 448,077?H
What is the value of the 2 in 962,407?D
What is the value of the 7 in 57,806?V
What is the value of the 2 in 94,625?G
What is the value of the 6 in 76,555?N
What is the value of the 4 in 53,463?I
What is the value of the 6 in 832,690?E
What is the value of the 3 in 97,375?U
0/16 letters found
Clue 3

Rounding

The oven temperature dial is broken and only shows numbers rounded to the nearest ten. Let us look closely at the blurry screen.

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
370
70
3700
500
20
20
900
T
370
70
1100
3700
430
1700
2300
110
170
170
3700
90
200
170
20
9000
1100
230
T
370
T
370
70
3700
3000
110
170
170
230
110
2000
Round 372 to the nearest tenT
Round 519 to the nearest hundredC
Round 1,131 to the nearest hundredR
Round 174 to the nearest tenL
Round 1,735 to the nearest hundredS
Round 2,279 to the nearest hundredP
Round 114 to the nearest tenI
Round 3,270 to the nearest thousandV
Round 156 to the nearest hundredF
Round 94 to the nearest tenD
Round 68 to the nearest tenH
Round 226 to the nearest tenA
Round 1,549 to the nearest thousandN
Round 433 to the nearest tenW
Round 3,663 to the nearest hundredE
Round 9,423 to the nearest thousandU
Round 23 to the nearest tenO
Round 928 to the nearest hundredK
0/18 letters found
Clue 4

Word problems

The delivery driver has to pack several orders of breadsticks. Solve his delivery puzzle to find the next clue on the receipt.

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

Astrandof
W
58
106
82
28
85
105
106
85
73
106
A
 
28
hairturnedupatthescene.
The head cook found 13 garlic cloves yesterday and 45 more today. How many garlic cloves in all?W
The head cook found 20 garlic cloves yesterday and 53 more today. How many garlic cloves in all?F
The head cook found 62 dough balls yesterday and 23 more today. How many dough balls in all?E
The head cook found 39 dough balls yesterday and 66 more today. How many dough balls in all?C
There were 103 dough balls. 21 were used up. How many dough balls are left?I
There were 119 garlic cloves. 13 were used up. How many garlic cloves are left?H
The head cook lined up 4 rows of 7 dough balls. How many dough balls in all?T
0/7 letters found
Clue 5

Division facts (1-12) — the last clue

The kitchen crew had to share a giant pile of pepperoni slices equally. The leftover pieces match a secret code on the pantry door.

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
6 ÷ 3 = ?
36 ÷ 4 = ?
44 ÷ 4 = ?
24 ÷ 3 = ?
5 ÷ 1 = ?
6 ÷ 2 = ?
14 ÷ 2 = ?
9 ÷ 9 = ?
144 ÷ 12 = ?
110 ÷ 11 = ?
4 ÷ 1 = ?
Step 2 — cross out the sentence with each answer
1.The villain squirts sour pickle juice, then shakes mustard dust into the crust.
2.The villain spreads bitter garlic sauce, then scatters wild oregano over the dough.
3.The villain pours spicy jalapeno sauce, then tosses smelly chives onto the pie.
4.The villain drizzles salty anchovy sauce, then sprinkles stinky basil on top.
5.The villain pours spicy jalapeno sauce, then scatters wild oregano over the dough.
6.The villain pours spicy jalapeno sauce, then shakes mustard dust into the crust.
7.The villain drizzles salty anchovy sauce, then tosses smelly chives onto the pie.
8.The villain squirts sour pickle juice, then blows powdered pepper across the cheese.
9.The villain pours spicy jalapeno sauce, then sprinkles stinky basil on top.
10.The villain spreads bitter garlic sauce, then blows powdered pepper across the cheese.
11.The villain splashes fiery habanero sauce, then shakes mustard dust into the crust.
12.The villain splashes fiery habanero sauce, then sprinkles stinky basil on top.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 5 math
Math topics
Skip counting, Place value, Rounding, Word problems, Division
Reading level
grades 3-4
Theme
The Poisonous Pizza Plot — set in Pepe's Pizzeria
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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